Bansbach FWM-2725FBD-S Shock Absorber Instructions

: June 8, 2024
: Bansbach

Table of Contents

PRECAUTIONS FOR USE
ADJUSTMENT METHOD
ABSORPTION CHARACTERISTICS
SPECIFICATIONS
COMMON SPECIFICATIONS
OPTIONAL PARTS
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Bansbach FWM-2725FBD-S Shock Absorber

PRECAUTIONS FOR USE

Do not use this product without carefully reading the attached owner’s manual.
Ensure that an external stopper (Stopper nut OP-020FB) is also used.
Do not turn the oil inlet screw located at the bottom of the main unit.
Ensure that sufficient mounting strength is secured for this product. (As a guideline, it should be 2 to 3 times the maximum drag listed in the catalogue.)
Do not use this product in a vacuum or a location where it may come in contact with oil.
Ensure that an eccentric load is not applied to the soft absorber. (Allowable eccentric angle: within ±2.5°)

ADJUSTMENT METHOD

To adjust, turn the adjustment knob located at the bottom of the main unit.
Because the adjustment can be done in an analog manner, a value between two integers on the indicator can be set.
Once the adjustment is complete, secure with a lock screw using a hex wrench.

ABSORPTION CHARACTERISTICS

Orifice type| Multiple-orifice type| Absorption characteristics

---|---|---
Model number| FWM-2725FBD Series
Application| For medium speed, in particular with a pneumatic cylinder

SPECIFICATIONS

Model| Stroke
mm| Max Energy Absorption J(kgf ٠ m)| Max Equiv.
Mass
kg(kgf)| Range of Impact Rate m/s| Oriﬁce Type
---|---|---|---|---|---
FWM-2725FBD-S| 25| 79.3(8.1)| 450(450)| 0.3~2| Multiple- varying orifice type

COMMON SPECIFICATIONS

Max Drag N(kgf)| Max Cycle Rate cycle/min| Max Energy Absorption per min. J/min(kgf ٠ m/mi n)| Extension F orce N(kgf)| Operating Temp. C˚| Mass g
---|---|---|---|---|---
6370(650)| 60| 539(55)| 27.3(2.78)

or lower

| -5~70| 411

OPTIONAL PARTS

Eccentric angle adaptor OP-010FB

Screw the eccentric angle adaptor into the main unit until the cap for the eccentric angle and the piston rod form a tight connection. While maintaining this position, fasten the main unit’s nut until it is secured.
Use the eccentric angle adaptor when the eccentric angle is 2.5° or larger.
The main unit can also be used as a stopper.
Use it with a capless soft absorber.
The maximum operating eccentric angle with an eccentric angle adaptor is ±10°.
The caps and the guides for inclined use are not unbundled

Note: Material of cap for eccentric angle: Metal

Stopper nut OP-020FB

Adjust so that it stops 1 mm before the stroke end, and fasten with the main unit’s nut until secured.

Note: When attaching, make sure that the side without a bearing chamfer is the impact surface.

Standard nuts are sold separately as well – M27 Nut

Square flange OP- 040FB

Once the attachment site is determined, use the main unit’s nut to securely fasten in place.

Liquid-proof cap FWM-2725FBD-C-060

A drip proof cap is fitted on the unit on delivery.
Liquid-proof caps are not sold separately.
Ensure that the cap is facing upward.
If the cap is facing sideways or downward, it cannot provide an effective means for liquid proofing.

Holder with a switch OP-030FB

Although a holder with a switch can be ordered on its own, we strongly recommend ordering one with the main unit. Please include the main unit’s model number when placing an order.