WORLDWIDE Electric SMR6-15 Original Series Shaft Mount Reducer Installation Guide

Installation and Maintenance Manual

WorldWide Electric Corporation – “Original” Series Shaft Mount Reducer

WARNING: Because of the possible danger to person(s) or property from accidents that may result from improper use of products, it is important that correct procedures be followed. Products must be used in accordance with the engineering information specified in the WorldWide Electric Corporation Gear Reducers Stock Products catalog. Proper installation, maintenance, and operation procedures must be observed. The instructions in this installation and maintenance manual must be followed. Inspections should be made as necessary to assure safe operation under prevailing conditions. Proper guards and other suitable safety devices or procedures, as may be desirable, or as may be specified in safety codes should be provided, and are neither provided by WorldWide Electric Corporation, nor the responsibility of WorldWide Electric Corporation. This unit and its associated equipment must be installed, adjusted, and maintained by qualified personnel who are familiar with the construction and operation of all equipment in the system and the potential hazards involved. When risks to persons or property may be involved, a holding device must be an integral part of the driven equipment beyond the speed reducer output shaft.

Installation

Note: Satisfactory performance depends on proper installation, lubrication, and maintenance. Therefore, it is important that the instructions in this manual are followed carefully.

1. Use eyebolts or lifting lugs to lift the reducer.

2. Determine the running positions of the reducer (see Figure 1). Note: The reducer is supplied with four plugs around the sides and one on each face for vertical installations.  These plugs must be arranged relative to the horizontal running positions as follows: the bottom one is the drain plug (D). Install the breather plug and completely remove the black rubber ring prior to operation (B) in the topmost hole. Of the three remaining plugs on the sides of the reducer, the lowest one is the minimum oil level plug (L).
   The running position of the reducer is not limited to the six positions shown in Figure 1. However, if the running position is over 20 degrees in positions (B) and (D) or 5  degrees in position (A) or (C) either way from sketches, the oil level plug cannot be used safely to check the oil level, unless, during the checking, the torque arm is disconnected and the reducer is swung to within 20 degrees for the position (B) and (D) or 5 degrees for the position (A) or (C).
   Figure 1- Mounting Positions
   Note: Below 15 RPM output speed, the oil level must be adjusted to reach the highest oil level plug (P).
   Because of the many possible positions of the reducer, it may be necessary or desirable to make special adaptations using the lubrication filling holes furnished along with other standard pipe fittings, standpipes, and oil levels gauges as required.
   

3. Mount reducer on the driven shaft as follows:
   WARNING: To ensure that the drive is not unexpectedly started, turn off and lock out or tag the power source before proceeding. Remove all external loads from the drive before removing or servicing the reducer or accessories. Failure to observe these precautions could result in bodily injury.

4. Install pulley on gearbox input shaft as close to the reducer as possible and mount reducer on the driven shaft as close to bearing as practical (maintain minimum distance to remove tapered bushing screw) (see Figure 2). Failure to do this will cause excess loads on the input shaft bearings and output bearings and could cause premature failure.
   Belt drive may be located in any convenient position. If the torque arm is to be used to tighten the belts, the drive should be at about 90 degrees to the line between the input and output shafts.
   Belt drive may be located to the right if desired.

5. Install motor and wedge belt drive with the belt pulley at approximately 90 degrees to the center line between driven and input shafts (see Figure 3). This will permit tensioning of the wedge belt drive with the torque arm which should preferably be in tension. If the output hub runs counter-clockwise, the torque arm should be positioned to the right (see Figure 4).
   If the output hub rotates clockwise, relocate the belt drive and torque arm in the opposite direction to that shown in the illustration.

6. Install torque arm fulcrum on rigid support so that the torque arm will be at approximately 90 degrees to the center line through the driven shaft and the torque arm case bolt (see Figure 5). If the output hub rotates clockwise, the belt drive and torque arm are in the opposite direction to that shown in the illustration.

CAUTION: All WorldWide shaft mount reducers are shipped without oil. Every WorldWide shaft mount reducer must be filled with a recommended gear oil. Failure to observe these precautions could result in damage to or destruction of the equipment. Failure to lubricate the shaft mount reducer will void the manufacturer’s warranty.
CAUTION: Failure to install the breather plug may result in gearbox overheating and will prematurely cause the oil seals to leak. Failure to install the breather plug in the shaft mount reducer will void the manufacturer’s warranty.

Lubrication Schedule

CAUTION: All WorldWide shaft mount reducers are shipped without oil. Every WorldWide shaft mount reducer must be filled with a recommended gear oil. Failure to observe these precautions could result in damage or destruction of the equipment. Failure to lubricate the shaft mount reducer will void the manufacturer’s warranty.
CAUTION: Too much oil will cause overheating and too little will result in gear failure. Check oil level regularly.
More frequent oil changes are recommended when operating continuously, at high temperatures, or under conditions of extreme dirt or dust.

For Best Results

1. Fill with recommended gear oil and operate for two weeks.
2. Drain after two weeks and flush with light oil.
3. Wipe any metal shavings from the magnetic drain plug and re-install.
4. Refill with recommended gear oil and continue.
5. Repeat every 2,500 hours to maximize unit life.

1.66 Liters
SMR3|  1.50 Quarts
1.42 Liters|  1.50 Quarts
1.42 Liters|  0.75 Quarts
0.71 Liters|  2.25 Quarts
2.13 Liters|  2.63 Quarts
2.48 Liters|  3.00 Quarts
2.84 Liters
SMR4|  1.88 Quarts
1.77 Liters|  2.25 Quarts
2.13 Liters|  1.25 Quarts
1.18 Liters|  1.75 Quarts
1.66 Liters|  3.38 Quarts
3.19 Liters|  4.25 Quarts
4.02 Liters
SMR5|  3.25 Quarts
3.08 Liters|  4.00 Quarts
3.79 Liters|  3.25 Quarts
3.08 Liters|  4.00 Quarts
3.79 Liters|  7.00 Quarts
6.62 Liters|  8.63 Quarts
8.04 Liters
SMR6| 4.25 Quarts| 5.00 Quarts| 4.25 Quarts| 5.00 Quarts| 8.63 Quarts| 9.13 Quarts
4.00 Liters| 4.70 Liters| 4.00 Liters| 4.70 Liters| 8.20 Liters| 8.60 Liters
SMR7| 6.50 Quarts| 8.00 Quarts| 7.25 Quarts| 9.25 Quarts| 15.38 Quarts| 16.38 Quarts
6.10 Liters| 7.57 Liters| 6.86 Liters| 8.75 Liters| 14.55 Liters| 15.50 Liters
SMR8|  8.50 Quarts
8.00 Liters| 11.00 Quarts
10.40 Liters| 10.50 Quarts
9.94 Liters|  8.50 Quarts
8.00 Liters| 19.13 Quarts
18.10 Liters| 19.13 Quarts
18.10 Liters
SMR9| 13.00 Quarts
12.30 Liters| 13.00 Quarts
12.30 Liters| 12.50 Quarts
11.83 Liters| 14.25 Quarts
13.48 Liters| 25.38 Quarts
24.00 Liters| 25.38 Quarts
24.00 Liters
SMR10| 23.00 Quarts
21.80 Liters| 14.00 Quarts
13.20 Liters| 15.75 Quarts
14.90 Liters| 18.75 Quarts
17.70 Liters| 41.00 Quarts
38.80 Liters| 41.00 Quarts
38.80 Liters
SMR12| 59..5 Quarts
56.30 Liters| 45.00 Quarts
42.60 Liters| 59.50 Quarts
56.30 Liters| 66.00 Quarts
62.40 Liters| 93.00 Quarts
88.00 Liters| 93.00 Quarts
88.00 Liters

Replacement of Parts

Important: Using tools normally found in a maintenance department, shaft mount reducers can be disassembled and re-assembled by careful attention to the instructions following. Cleanliness is very important to prevent the introduction of dirt into the bearings and other parts of the reducer. A tank of clean solvent, an arbor press, and equipment for heating bearings and gears (for shrinking these parts on shafts) should be available. The oil seals are of the rubbing type and considerable care should be used during disassembly and re-assembly to avoid damage to the surface on which the seals rub. The key seat in the input shaft, as well as any sharp edges on the output hub, should be covered with tape or paper before disassembly or re-assembly. Also, be careful to remove any burrs or nicks on surfaces of the input shaft or out hub before disassembly or re-assembly.

Ordering Parts: When ordering parts for reducer, specify reducer size number, part name, part number, and quantity. It is strongly recommended that, when a pinion or gear is replaced, the mating pinion or gear is replaced also. If the large gear on the output hub must be replaced, it is recommended that an output hub assembly of a gear assembly on a hub be ordered to secure undamaged surfaces on the output hub where the output seals rub. However, if it is desired to use the old output hub press the gear and bear off and examine the rubbing surface under the oil seal carefully for possible scratching or other damage resulting from the pressing operation. To prevent oil leakage at the shaft oil seals, the smooth surface of the output hub must not be damaged. If any parts must be pressed from a shaft or from the output hub, this should be done before ordering parts o make sure that none of the bearings or other parts are damaged in removal. Do not press against the outer race of any bearing. Because old shaft rubber oil seals may be damaged in disassembly, it is advisable to order replacements for these parts.

REMOVING REDUCER FROM SHAFT

WARNING: To ensure that drive is not unexpectedly started, turn off and lock out or tag the power source before proceeding. Failure to observe these precautions could result in bodily harm.
CAUTION: Remove oil external loads from the drive before removing or servicing the drive or accessories.

1. Remove bushing screws.
2. Place the screws in the threaded holes provided in the bushing flanges. Tighten the screws alternately and evenly until the bushings are free on the shaft. For ease of tightening screws, make sure screw threads and threaded holes in bushing flanges are clean.

DISASSEMBLY

1. Position the reducer on its side and remove all housing bolts. Drive dowel pins from the housing. Gently tap the output hub and input shaft with a soft hammer (rawhide, not a lead hammer) to separate the housing halves. Open housing evenly to prevent damage to the parts inside.
2. Lift shaft gear and bearing assemblies from the housing.
3.  Remove seals from the housing.

RE-ASSEMBLY

1. Output Hub Assembly: Heat gear to 160- 180 degrees to shrink onto the hub. Heat bearings to 130- 145 degrees to shrink onto the hub. Any injury to hub surfaces where the oil seals rub will cause leakage, making it necessary to use a new hub.
2. Countershaft Assembly: Shaft and pinion are integral. Press gear and bearings on the shaft. Press against an inner (not outer) race of bearing.
3. Input Shaft Assembly: Shaft and pinion are integral. Press bearings on shaft. Press against an inner (not outer) race of bearings (for SMR2 press against the ball bearing on the shaft).
4. Drive the two dowel pins into place in the right-hand housing half. Apply sealant to carriers for R. H. side (backstop side) of reducer. Install carriers and torque bolts with  30-27 foot-pounds for SMR3 to 6, and 50-45 foot-pounds for SMR7 to 12. SMR2s do not have these carriers.
5. Place R. H. housing half on the block to allow for protruding end of output hub.
6. Install bearing cups in the right-hand housing half, making sure they are properly sealed (SMR2s do not have this step).
7. Mesh output hub gear and small countershaft gear together and set in place in the housing. Make sure bearing rollers (cones) are properly seated in their cups. Set bearing cups for left-handed housing half in place on their rollers (except SMR2).
8. Clean housing flange surfaces on both halves, making sure not to nick or scratch the face. Apply sealant to flange face (make sure that the sealant is placed between bolt holes and inside of the surface). Place L.H. housing into position and tap with a soft hammer (rawhide, not lead hammer) until housing bolts can be used to draw housing halves together. Torque housing bolts per torque values 30- 27 foot-pounds for SMR2, 50- 45 foot-pounds for SMR3 to 4, 75-68 foot-pounds for SMR5 to 6, 150- 135  foot-pounds for SMR7 to 12.
9. Place output hub seal carrier into position without shims and install two carrier screws diametrically opposed. Torque each screw to 25 inch-pounds. Rotate the output hub to roll in the bearings and then torque each screw to 50 inch-pounds. Again, turn the output hub to roll in the bearings. With a shim thickness, take the average of the two feeler gauge readings. Remove carrier and install the required shims plus 0.002”. Install carrier with shims and torque bolts per torque values 17- 15 foot-pounds for SMR3,  30- 27 foot-pounds for SMR4 to 6, and 50- 45 foot-pounds for SMR7- 12. The SMR2 does not require this step. Rotate hub assembly tap lightly with a rawhide mallet on the end of the hub, while rotating, to ensure bearings are sealed. Using a dial indicator check the end play of hub bearings, the end play should be 0.001- 0.003. Repeat this process as necessary to obtain proper end play. Place sealant inside the carrier at the shim I.D. and install carrier on reducer housing. Torque carrier bolts to value 17- 15  foot-pounds for SMR3, 30- 27 foot-pounds for SMR4 to 6, and 50- 45 foot-pounds for SMR7 to 12. The SMR2 does not require this step.
10. Adjust the countershaft bearings using the same method as in step 9 above. The axial end play should be 0.001″ to 0.003″.
11. Again, using the same procedure as in step 9, adjust the input shaft bearing, except the axial end play should be 0.002″ to 0.004″. Using gaskets install input shaft cover and countershaft cover to right-handed housing half. Install input and output seals. Extreme care should be used when installing seals to avoid damage due to contact with sharp edges on the input shaft or output hub. The possibility of damage and consequent oil leakage can be decreased by covering all sharp edges with tape prior to seal installation. Fill cavity between seal lips with grease. Seals should be pressed or tapped with a soft hammer evenly into place in the carrier, applying pressure only on the outer edge of the seals. Slight oil leakage in the seals may be evident during initial running but should disappear unless seals have been damaged.
12. Install bushing backup plates and snap rings on Taper Bushing reducers. (Please note SMR6, 8, and 9’s snap rings have a little notch for the bushing screw, and the notch must  have a right angle to output the husky seat.)
13. Install the backstop into the housing (please take attention to the rotation of the output hub’s key seat.)
14. Install the backstop cover onto the box, if the cover was wrought iron, do not forget the backstop gasket, if the cover was cast iron, do not forget to place some sealant on the joint surface (inside the bolt holes).

Replacement Parts – SMR “Original” series Shaft Mount Reducers
Table 1 – Bearings for SMR “Original” series Shaft Mount Reducers (bearing type and dimensions inner outer width). The SMR2 shaft mount reducer has a ball bearing.  MR3 to SMR12 shaft mount reducers have roller bearings.

Model
Number| Bearing Position
---|---
Input Shaft Input Side| Input Shaft Output Side| Intermediate Shaft
Input Side| Intermediate Shaft
Output Side| Output Hub
Input Side| Output Hub
Output Side
SMR2| 6206| 6305NR| 6305| 6305| 6013| 6013
| 306216| 256217| 256217| 256217| 6510018| 6510018
SMR3| LM48548A/LM48510| 15102/15245| 15102/15245| 15102/15245| LM814849/LM81410| LM814849/LM81410
| 34.92565.08818.034| 25.46219.05| 25.46219.05| 25.46219.05| 77.788117.47525.4| 77.788117.47525.4
SMR4| 32208J| 30306J| 32206J| 32206J| 32017XJ| 32017XJ
| 408024.75| 307220.75| 306221.25| 306221.25| 8513029| 8513029
SMRS| 32210J| 30308J| 32208J| 32208J| 32019XJ| 32019XJ
| 509024.75| 409025.25| 408024.75| 408024.75| 9514532| 9514532
SMR6| 32212J| 30310J| 32309J| 33209J| 32022XJ| 32022XJ
| 6011029.75| 5011029.25| 4510038.25| 458532| 11017038| 11017038
SMR7| 33113J| 30310J| 32309J| 32309J| 32024XJ| 32024XJ
| 6511034| 5011029.25| 4510038.25| 4510038.25| 12018038| 12018038
SMR8| 32214J| 30312J| 33213J| 32212J| 32928| 32928
| 7012533.25| 6013033.5| 6512041| 6011029.75| 14019032| 14019032
SMR9| 32313J| 30313J| 30314J| 30314J| 32934| 32934
| 6514051| 6514036| 7015038| 7015038| 17023038| 17023038
SMR10| 32314J| 30314J| 33217J| 33217J| 32936| 32936
| 7015054| 7015038| 8515049| 8515049| 18025045| 18025045
SMR12| 32314J| 32314| 32316J| 32316J| 32940| 32940
| 7015054| 7015054| 8017061.5| 8017061.5| 20028051| 20028051

Table 2 – Oil Seals for SMR “Original” series Shaft Mount Reducers (all SMR oil seals are TC double lip oil seals).

Model
Number| Input Shaft (1 Required)| Output Shaft (2 Required)
---|---|---
Housing Diameter| Shaft Diameter| Width| Housing Diameter| Shaft Diameter| Width
SMR2| 62| 30| 7| 100, 90| 65| 10
SMR3| 57.| 32| 10| 92.| 73.| 10.
SMR4| 55| 38| 8| 120| 80| 10
SMR5| 75| 50| 10| 120| 95| 10
SMR6| 95| 60| 10| 160| 110| 12
SMR7| 95| 65| 10| 160| 120| 15
SMR8| 100| 65| 10| 170| 140| 12
SMR9| 100| 65| 10| 190| 165| 13
SMR10| 90| 70| 10| 210| 180| 15
SMR12| 90| 70| 10| 230| 200| 15

All dimensions on this page are in millimeters (mm).
SMR2 output housing diameter requires one each 100mm and 90mm seal.

Motor Mount Installation

WARNING: To ensure that the drive is not unexpectedly started, turn off and lock out and tag the power source before proceeding. Failure to observe these precautions could result in bodily harm or death.

Note: Refer to photo for positions of all parts before installation.

1. Remove the two or three bolts required for mounting the motor mount from the reducer housing. Install the front and rear supports (2) using the new reducer bolts (1)  supplied with the motor mount. Make sure support flanges face the output side of the reducer. Tighten bolts securely.

2. Mount bottom plate (3) on supports with bolts supplied. Insert bolts (7) from the top through slotted holes. Add flat washer, lock washer, and nut. Hand tightens.

3. Thread two nuts (6) on each threaded stud (5) leaving approximately 1″ of stud protruding at one end. Insert threaded stud with 1″ of threads through the corner hole of the bottom plate. Thread a hex nut (6) on the studs and tighten securely.

4. Slide top plate (4) over the threaded stud, making sure the center handling hole is positioned opposite the input side of the reducer. Thread a hex nut(6) on the studs and tighten securely.

5. Locate the proper position for the motor and bolt it to the top plate. Tighten bolts securely.

6. Install motor sheave and reducer sheave as close to motor and reducer housings as possible.
   Accurately align the motor and reducer sheave by sliding the bottom plate in relation to supports.
   Tighten bolts (7) securely.

7. Install V-belts and tension belts by alternately adjusting nut (6) on the threaded studs (jackscrews). Make certain that all bolts are securely tightened, the V- belt drive is properly aligned, and an appropriate belt guard is installed before operating the drive.

  Backstop Installation

WARNING: Failure to install a backstop assembly correctly can result in injury to personnel and/or destruction of the backstop assembly, the speed reducer, and other property. Read all backstop installation instructions completely before installing a backstop assembly. Certain size speed reducers require the installation of a circlip (snap ring) on  the input shaft for the purposes of keeping the backstop assembly from moving in an axial direction on the input shaft during speed reducer operation. Failure to install this circlip (snap ring) may result in backstop failure and can destroy the speed reducer.
WARNING TO ELECTRICIANS: Before powering up equipment that contains a shaft mount reducer containing an installed backstop assembly, disconnect the v-belts from the motor sheave and confirm the rotation direction of the motor. Applying power to the motor in a reverse direction against the freewheel direction of the backstop assembly will destroy the backstop assembly and possibly destroy the shaft mount reducer as well. Failure to comply with this instruction will void the manufacturer’s warranty of the speed reducer and the backstop assembly and may result in injury to personnel or property.
WARNING: Use only WorldWide Electric Corporation SMR#BSK style backstop assemblies in the “Original” series shaft mount reducers. Do not use any other brand or style of backstop assemblies in these speed reducers. Using other brands or styles of backstop assemblies may result in backstop assembly failure and may result in jury to personnel or property. Using another manufacturer or style of backstop assembly in the “Original” series shaft mount reducer will void the manufacturer’s warranty of the speed reducer and the backstop assembly.
CAUTION: To avoid premature failure of the backstop or possible machine malfunction, installation of the backstop should be carried out by suitably qualified personnel and according to the following instructions:

Backstop Description

1. The main components of SMR#BSK units are the Inner race (if applicable), outer race, a number of energized springs, and side plate.
2. The maximum permissible overrunning speed must not be exceeded.
3. When used in dual drive applications, the maximum driving speed must not be exceeded.
4. Backstops (cam clutches) are shaft mounted, so the shaft on which the clutch is mounted must be hardened to HRC 56-60- and 1.5-mm case depth after grinding. Grind to  1.5S (16 micro-inch) finish.
   The taper of this shaft should not exceed 0.01 mm per 50 mm.

Prior to Installation

1. The units should be unpacked and installed in a clean dry working environment.
2. For units dispatched ‘dry’, corrosion inhibitors should be removed using flushing oil prior to Installation.
3. The inner race should be fitted to a shaft of (-0.01mm to -0.025mm) tolerance if the unit is supplied with a metric bore. Details for each type are shown in the dimensions tables on pages 13-14.
4. The mounting register for the outer race should be within the housing bore (0mm to +0.03mm) tolerance. Details for each type are shown in the dimensions tables on pages 13-14.
5. The freewheeling direction should be checked prior to installation (see Backstop Assembly Type and Rotation Illustration below).
6. If reversal of the freewheeling direction is required, turn the backstop through 180 degrees.

Installation

1. The backstop (clutch) should be installed as an assembly. For backstops with an inner and outer raceway, do not separate the two parts.

2. The inner race should be pulled onto the shaft. The key should be the full length of the hub.

3. For installation of the backstop, mount the backstop with bearings on both sides or on one side in order to obtain concentricity between the shaft and the backstop outer race and to take up radial or thrust loads which may work on the outer race or the shaft. (See Mounting Example below).
   Mounting Example

4. The backstop should be mounted on the shaft by rotating it in the direction marked by the arrow shown on the clutch plate. Do not apply shock to the backstop by hammering. The backstop may be tapped gently if necessary with a soft hammer (rawhide, not a lead hammer).

5. On SMR reducers sizes 6 (SMR6) and 7 (SMR7), to prevent axial movement of the SMR6/7BSK after installation, a circlip (snap ring) must be placed onto the SMR  backstop mounting shaft. A small groove is located on the backstop mounting shaft for insertion of the circlip. This groove is easily seen on the SMR backstop mounting shaft after the removal of the backstop cover. The SMR6/7BSK uses a 38*1.5 circlip. Circlip rings are provided with each SMR6/7BSK. Take care not to accidentally discard them when opening the SMR6/7BSK packaging.

6. On SMR reducers sizes 8 (SMR8), 9 (SMR9), 10 (SMR10), and 12 (SMR12), to prevent axial movement of the SMR8/9BSK or SMR10BSK after installation, a circlip (snap ring) must be placed onto the SMR backstop mounting shaft. A small groove is located on the backstop mounting shaft for insertion of the circlip. This groove is easily seen on the SMR backstop mounting shaft after the removal of the backstop cover. The SMR8/9BSK and SMR10BSK use a 45*1.5 circlip. Circlip rings are provided with each SMR8/9BSK and SMR10BSK. Take care not to accidentally discard them when opening the SMR8/9BSK or SMR10BSK packaging.

7. The backstops (clutches) have the same outside diameters as the bearings. The bore tolerance of the housing in which the backstop is assembled should be within the range of each type of SMR#BSK.

8. Concentricity of the housing bore and shaft should be within 0.05 mm.

After Installation

1. After installation, ensure smooth rotation of the units in the freewheeling direction by manually turning the input shaft of the reducer to confirm the desired direction of rotation.
2. Ensure the unit contains the correct volume of the lubricant prior to use.
3. The expected drag torque produced when freewheeling is about 1/1000 of the nominal torque.

Dismantling

1. To dismantle the units, please follow the Installation section in reverse sequence.

Lubrication and Maintenance of the Backstop Assembly

1. Type SMR#BSK backstops are factory lubricated with oil.
2. The working temperature is between minus 20 degrees Celsius to plus 70 degrees Celsius.
3. The backstop can operate without maintenance.
4. If arduous conditions exist (i.e. high temperature/dusty conditions), the backstop should be relubricated every 3 to 6 months.
5. Do not use slip additives such as graphite, Molykote, or similar agents in the oil and grease as they will shorten the service life of the clutches.

Backstop Assembly Type and Rotation Illustration

|
---|---
Type 1 – Backstop Assembly (without Inner Race)| Type 2 – Backstop Assembly (with Inner Race)

Backstop Dimensions

SMR (2,3,4,5) BSK Backstops — Dimensions

Model#| Out Race A
inches (mm)| Housing
Bore (mm)| Inner Race B
inches (mm)| Shaft
(mm)| Width E
inches (mm)
SMR2BSK| 2.44
(62
+0
-0.03)| 62
+0.03
+0| 0.97
(24.65)| 24.65
-0.01
-0.025| 0.87
(22)
SMR3BSK| 1.85
(47
+0
-0.025)| 47
+0.025
+0| 0.74
(18.796)| 18.796
-0.01
-0.025| 0.98
(25)
SMR4BSK| 2.44
(62
+0
-0.03)| 62
+0.03
+0| 0.89
(22.57)| 2.57
-0. 01
-0.025| 0.91
(23)
SMR5BSK| 3.15
(80+0
-0.03)| 80
+0.03
+0| 1 .22
(30.862)| 30.862
-0.01
-0.025| 1.26
(32)

SMR (6/7,8/9,10/12) BSK Backstops Dimensions

Model#| Out Race A
inches (mm)| Housing
Bore (mm)| Inner Race B
inches (mm)| Inner Race B
Tolerance (mm)| Width E
inches (mm)
SMR6/7BSK| 3.94
(100
+0
-0.035)| 100
+0.035
+0| 1.50
(38.1)| 38 1 -0.01
-0.035| 1.16
(29.5)
SMR8/9BSK| 4.5
(114.3
+0
0.035)| 114.3
+0.035
+0| 1.75
(44.45)| 44.45
-0.01
-0.035| 1.06
(27)
SMR10/12BSK| 4.5
(114.3
+0
0.035)| 114.3
+0.035
+0| 1.75
(44.45)| 44.45
-0.01
-0.035| 1.575
(40)

SMR10BSK = SMR12BSK

Guidelines for Long-term Storage

Guidelines for Long-term Storage:
During periods of long storage, or when waiting for delivery or installation of other equipment, special care should be taken to protect a gear reducer to have it ready to be in the best condition when placed into service. By taking special precautions, problems such as seal leakage and reducer failure due to lack of lubrication, improper lubrication quality, or contamination can be avoided. The following precautions will protect gear reducers during periods of extended storage.

Preparation:

1. Drain the oil from the unit. Add a vapor phase corrosion inhibiting oil in accordance with followed table:
   Table – Quantities of Vapor Phase Oil Size| 2| 3| 4| 5| 6| 7| 8| 9| 10| 12
   ---|---|---|---|---|---|---|---|---|---|---
   Liters| 0.1| 0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.9| 1.3| 2.5
2. Seal the unit airtight. Replace the air breather plug with a standard pipe plug and wire the vent to the unit.
3. Cover the shaft extension with a waxy rust preventative compound that will keep oxygen away from the bare metal.
4. The instruction manuals and lubrication tags are paper and must be kept dry. Either remove these documents and store them inside or cover the unit with a durable waterproof cover that can keep moisture away.
5. Protect the reducer from dust, moisture, and other contaminants by storing the unit in a dry area.
6. In damp environments, the reducer should be packed inside a moisture-proof container or an envelope of polyethylene containing a desiccant material. If the reducer is to be stored outdoors, cover the entire exterior with rust preventative.

When Placing the Reducer into Service:

1. Assemble the vent plug into the proper hole.
2. Clean the shaft extensions with petroleum solvents.
3. Fill the unit to the proper oil level using a recommended lubricant. The vapor phase corrosion inhibiting oil will not affect the new lubricant.
4. Follow the installation instructions provided in this manual.

SMR Exploded View

SMR Ratio/ Speed Table
SMR “Original” series Shaft Mount Reducers – Actual Ratio and Maximum Input Speed (RPM).

Model
Number| Nominal Ratio 15:1| Nominal Ratio 25:1
---|---|---
Actual Ratio| Maximum Input Speed| Actual Ratio| Maximum Input Speed
SMR2| 14.| 1974| 23.| 1994
SMR3| 15.| 2083| 25.| 2100
SMR4| 15.| 2118| 24.| 2072
SMR5| 15.| 1925| 26.| 2044
SMR6| 15.| 1916| 25.| 2010
SMR7| 15.| 1827| 25.| 1844
SMR8| 15.| 1809| 25.| 1847
SMR9| 15.| 1814| 26.| 1925
SMR10| 15.| 1819| 24.| 1823
SMR12| 15.| 1786| 25.| 1849

Limited Warranty

Limited Warranty:

WorldWide Electric Corporation (The Company) warranties its products to be free from defects in materials or workmanship to the original purchaser for a period of two (2) years from the date of sale (invoice). For this warranty to be effective, this product must be installed, used, and maintained by the original purchaser in the accordance with good industry standards. The warranty does not cover normal wear, tear, and erosion from use, misuse, abuse, or corrosion.
In the event of failure, it shall be the responsibility of the original purchaser to notify The Company either in writing or by telephone to make arrangements for the correction of the problem. The purchaser shall be responsible for transportation charges connected with the return, exchange, or repair of parts. Returns found defective upon inspection by our warranty department or authorized warranty service agent will be replaced free of charge.
The Company shall not be liable for any labor cost connected with the replacement of the equipment, the replacement of the parts, or adjustments to the equipment by the purchaser or their contractor without The Company’s prior written approval.
The Company, as the exclusive remedy under this warranty, shall at its option, repair or replaces defective items or, if agreed upon, refund the purchase price less reasonable allowance for depreciation in exchange for the product.
THE COMPANY MAKES NO OTHER WARRANTIES AND ALL IMPLIED OR EXPRESSED WARRANTIES AND REPRESENTATIONS, EXCEPT THAT OF  TITLE, ARE DISCLAIMED. ALL IMPLIED WARRANTIES INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE BUT  NOT LIMITED TO JUST THOSE THAT ARE DISCLAIMED. LIABILITY FOR CONSEQUENTIAL, INCIDENTAL, OR SPECIAL DAMAGES AND LOSSES  UNDER ANY AND ALL WARRANTIES WHETHER IN CONTRACT, TORT OR OTHERWISE ARE EXCLUDED TO THE EXTENT EXCLUSION IS PERMITTED BY LAW.

WorldWide Electric Corporation
Phone: 1-800-808-2131
Fax: 1-800-711-1616
Website: www.worldwideelectric.net

References

• Industrial Electric Motors | WorldWide Electric | Rochester NY

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