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1. no bubbles, 2. very good adhesive, never unglued, 3. smooth surface - details see: https://www.machineto.com/ball-bearing-with-pu-coated-shelled-flat-608-626-609-10201772

Inside Bearing Property:

1,Seal form: open style, Z,ZZ,RS,2RS,2RZ,

2,Bearing stop ring: N,NR

3, Class of precision : ABEC-1,ABEC-3,ABEC-6

4,Vibration rank: V1,V2,V3,V4

5,Noise rank: Z,Z2,Z3,Z4

6,Internal elimination code: C0,C2,C3,C4,C5

7,Bearing.material:bearing steel(9Cr18),stainless steel(AISI440C,AISI304,AISI316),Ceramics

8,Keepr: stainless steel, PTFE,nylon

9,Bearing ferrule and ball hardness:59-63HRC

10,Apply: automotive , electrical, construction machinery and various kinds of professional machinery.

Description	PU bearing
Brand	Kamid
Material	Nature rubber, NBR, PU, Silicone...
Dimension	Per drawing or request
Color	more than 30 colors or per request
Hardness	Shore 5A~ 95A
Temperature	up to 300°C
Hub Material	Aluminum, Steel, Sintered Bronze, Brass, Bearing, Many Plastics
Bearing Choices	Ball, Needle, Sintered Bronze, Plastic
Warranty	6 months ~ 12 months
Special Feature:	1. good wear resistance
	2. high precision, can be within 2ddm
	3. good depth of parallelism
	4. no bubbles, smooth surface
Usage	All kinds of machine
Technology	casting by hand
Our advantage	we have our own lathe & grinding machine to make sure the precision can match our customers' needs

1. What is polyurethane?

Polyurethane (commonly abbreviated PU) is a unique material that offers the elasticity of rubber combined with the toughness and durability of metal. It allows the engineer to replace rubber, plastic and metal with the ultimate in abrasion resistance and physical properties. Polyurethane can reduce plant maintenance and OEM product cost.

2. What is the advantage of polyurethane?

Urethanes have better abrasion and tear resistance than rubbers, while offering higher load bearing capacity.

Compared to plastics, urethanes offer superior impact resistance, while offering excellent wear properties and elastic memory. Urethanes have replaced metals in sleeve bearings, wear plates, sprockets, rollers and various other parts, with benefits such as weight reduction, noise abatement and wear improvements being realized.

3. Advantages to Polyurethane

Abrasion resistant, Load bearing capacity, Tear resistant, Weather resistant, Excellent noise abatement properties,Flex-Life, Electrical properties, Heat and cold resistant.

4. Applications

Belts, Metal forming pads, Wear strips, Bumpers, Gears, Bellows, Machinery mounts, Cutting Surfaces,Sound-dampening pads, Chute and hopper liners, Prototype machined parts, Gaskets, Seals, Rollers, Roller covers,Sandblast curtains, diaphragms.