Crosby G-291 Regular Nut Eye Bolts Instruction Manual
- June 12, 2024
- Crosby
Table of Contents
Crosby G-291 Regular Nut Eye Bolts
Inspection/Maintenance Safety
- Always inspect eye bolt before use.
- Never use eye bolt that shows signs of wear or damage.
- Never use eye bolt if eye or shank is bent or elongated.
- Always be sure threads on shank and receiving holes are clean.
- Never machine, grind, or cut eye bolt.
- Do not leave threaded end of machinery eye bolt in aluminum loads for long periods of time as it may cause corrosion.
Assembly Safety
- Never exceed load limits specified in Table I & Table 2.
- Never use regular nut eye bolts for angular lifts.
- Always use shoulder nut eye bolts (or machinery eye bolts) for angular lifts.
- For angular lifts, adjust working load as follows:
ANGLE FROM “IN-LINE”
|
ADJUSTED WORKING LOAD LIMIT
---|---
5 degrees|
100% of rated working load
15 degrees
| 80% of rated working load
30 degrees|
65% of rated working load
45 degrees
| 30% of rated working load
90 degrees|
25% of rated working load
- Never undercut eye bolt to seat shoulder against the load.
- Always countersink receiving hole or use washers with sufficient I.D. to seat shoulder.
- Always screw eye bolt down completely for proper seating.
- Always tighten nuts securely against the load.
Table 1 (In-Line Load)
Size (in)
|
Working Load Limit (lb)
1/4
| 650
5/16|
1,200
3/8
| 1,550
1/2|
2,600
5/8
| 5,200
3/4|
7,200
7/8
| 10,600
1|
13,300
1-1/8
| 15,000
1-1/4|
21,000
1-1/2
| 24,000
1-3/4|
34,000
2
| 42,000
2-1/2|
65,000
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- Load may slip or fall if proper eye bolt assembly and lifting procedures are not used.
- A falling load can seriously injure or kill.
- Read and understand these instructions, and follow all eye bolt safety information presented here.
- Read, understand, and follow information in diagrams and charts below before using eye bolt assemblies.
Shoulder Nut Eye Bolt – Installation for Angular Loading
Figure 1
- The threaded shank must protrude through the load sufficiently to allow full engagement of the nut.
- If the eye bolt protrudes so far through the load that the nut cannot be tightened securely against the load, use properly sized washers to take up the excess space BETWEEN THE NUT AND THE LOAD.
- Thickness of spacers must exceed this distance between the bottom of the load and the last thread of the eye bolt.
- Place washers or spacers between nut and load so that when the nut is tightened securely, the shoulder is secured flush against the load surface.
Table 2 (In-Line Load)
Metric Size|
Working Load Limit – kg
m6
| 200
m8|
400
m10
| 640
m12|
1000
m16|
1800
m20
| 2500
m24|
4000
m27
| 5000
m30|
6000
m36
| 8500
m42|
14000
m48
| 17300
m64|
29500
This application/warning information apply to Crosby products only.