Polyurethane rubber bumper / fully configurable

Back to the Category Disks/Sleeves (Rubber, Caoutchouc, Foam, Felt)

Technical Drawing - Polyurethane Rubber Washers

Specification Tables - Polyurethane Rubber Washers

Part Number						1mm Increment			Selection
						D	L	V (For Through Hole Type Only)	C (For Standard Urethane Only)
Standard Grade						6~150 For Vulkollan® Only 6~45	10~300 For Vulkollan® Only 10~50	2~130 When D≥16, V≥4 When D≥31, V≥6	N (Natural Color) B (Black)
Through Hole Type	No Hole Type
AXFS	CXFS	(	Standard Urethane	Shore A95	)
AXFH	CXFH	(	Standard Urethane	Shore A90	)
AXFM	CXFM	(	Standard Urethane	Shore A70	)
AXFL	CXFL	(	Standard Urethane	Shore A50	)
AXFY	CXFY	(	Standard Urethane	Shore A30	)
AXFHE	CXFHE	(	Antistatic Polyurethane	Shore A90	)
AXFME	CXFME	(	Antistatic Polyurethane	Shore A70	)
AXFLE	CXFLE	(	Antistatic Polyurethane	Shore A50	)
AXFAN	CXFAN	(	Low Rebound Urethane	Shore A70	)
AXHHF	CXHHF	(	Heat Resistant Urethane	Shore A90	)
*VULHF	*CXVHF	(	Vulkollan®	Shore A92	)
*VULMF	*CXVMF	(	Vulkollan®	Shore A68	)
AEXHF	CXEHF	(	Abrasion Resistant Urethane	Shore A90	)
AEXMF	CXEMF	(	Abrasion Resistant Urethane	Shore A70	)
AXCES	CXCES	(	Ceramic Urethane	Shore A95	)
AXCEH	CXCEH	(	Ceramic Urethane	Shore A90	)
AXCEM	CXCEM	(	Ceramic Urethane	Shore A70	)
Precision Grade
Through Hole Type	No Hole Type
AAFS	CAFS	(	Standard Urethane	Shore A95	)
AAFH	CAFH	(	Standard Urethane	Shore A90	)
AAFM	CAFM	(	Standard Urethane	Shore A70	)

[ ! ]The thickness of Through Hole Type (D-V)/2 is restricted by L. Refer to the table (Thickness Condition) in the drawing. When V=2, L≤50.
[ ! ]When L≥201, V≥8
[ ! ]For Vulkollan^®, D dim. will be up to 45mm, and L dim. will be up to 50mm.
[ ! ]AXFS/AXFH/AXFM/AXFL/AXFY When dimension D is 101 or greater, only 105/110/115/120/125/130/140/150 are selectable.
[ ! ]AXFS/AXFH/AXFM/AXFL/AXFY When dimension V is 101 or greater, only 105/120/130 are selectable.

Alterations - Polyurethane Rubber Washers

General Information - Polyurethane Rubber Washers

Selection details of rubber discs/rubber sleeves

- Material: heat-resistant antistatic, abrasion-resistant, highly abrasion-resistant, low-impact polyurethane rubber (PU/PUR), Vulkollan, ceramic polyurethane rubber, nitrile rubber sponge (NBR), chloroprene rubber (CR), ethylene cautchouc (EPDM), silicone rubber (SI), fluoro-cautchouk (FPM), hard rubber, butyl rubber (IIR), natural rubber, nitrile rubber foam, chloroprene rubber foam, polyethylene foam (EPDM foam), EPT sealing material, Silicone rubber foam, fluoro-rubber foam, special polyurethane foam (SOFRAS), polyester felt, polyester felt

- Hardness: Asker C5 to C35, Asker F75 to F85, Shore A15 to A95

- Versions: disc with bore holes, sleeves with holes, sleeves without holes, sleeves with counterbores, sleeves with external threads, sleeves with collar, dampers with round tip, dampers with conical tip

- Inner diameter: up to 80 mm

- Outer diameter: 6 to 100 mm

- Length: 1 to 10 mm (discs), 10 to 500 mm (sleeves)

Description/Basics

Rubber discs and rubber sleeves, also called rubber buffers, are generally used for vibration damping and impact damping. Rubber sleeves are often used as stopper buffers in industry. Rubber discs are occasionally also used as seals.
Discs and sleeves made of natural rubber are offered in different materials and hardnesses.

While rubber discs are often used for sealing, rubber sleeves are increasingly used as rubber buffers, stopper buffers, or elastomer dampers. MISUMI already offers such a rubber sleeve as a rubber buffer with external thread or counterbore for fastening.
The rubber buffer is also available with a vulcanized metal collar, which not only allows for a firm assembly, but also sits in the anti-backlash rubber sleeve. These adhesives are also available separately. In addition to the material of the rubber buffer, the shape of the stopper buffer is also responsible for the damping characteristic. conical or rounded rubber buffers can also develop a progressive damping curve that generates increasing damping.

Depending on the application and environmental influences, MISUMI offers rubber discs and rubber sleeves in various basic materials with the appropriate resistance. An overview of the intended uses of the respective natural rubber can be found under Natural Rubber Properties as PDF .
The rubber buffers made of polyurethane rubber are also available in an antistatic version. The specific resistance of antistatic rubber discs and rubber sleeves prevents static charging. This can prevent damage to electronic components.
For high temperature applications, MISUMI offers heat-resistant polyurethane rubber, which can withstand temperatures of approx. +120°C (see Specifications for further information).
Vulkollan, on the other hand, is a very abrasion-resistant polyurethane, the abrasion resistance of which is six times higher compared to conventional polyurethane.
Ceramic polyurethane washers and sleeves contain ceramic particles. Despite a low Shore hardness, they can be machined to give them a smooth surface.
MISUMI also offers foam discs and foam sleeves. In addition to damping, these can also have sealing properties. This is achieved by the foam discs due to the closed or semi-closed pores (EPT sealer) inside the material. For semi-closed pores, the pores are sealed under load. Therefore, the type of pores must always be observed for foams in order to select the appropriate foam depending on the application. You can get help for your selection by following this link.
Further properties of natural rubbers and foams can be found in the Properties PDF.
In addition to the aforementioned basic materials, the MISUMI online shop also offers felt discs and felt sleeves. Felt has the properties of capillary action and can absorb and release liquids such as oil. In addition, felt is gentle on sensitive surfaces and is often used for polishing surfaces.

A antivibration materials can also be used for two-sided mounting to dampen vibration.
MISUMI also offers vibration damping and impact damping materials in the form of sheets.

Application Examples - Polyurethane Rubber Washers

Application example: rubber roller
(1) Rubber sleeve, (2) Roller bearing, (3) Axles / Rotary Shafts, (4) Catch ropes

Application example: cylinder stopper buffer
(1) Rubber washer, (2) Floating joints, (3) Pneumatic cylinder

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry