PEEK PAI balls bearing

May 10, 2023

Deep groove ball bearing specialist for heat & chemistry,PEEK PAI balls

PAI PEEK ball bearing

PAI technical drawing

Very good temperature and chemical resistance
Low weight
Application temperature: -100 °C to +150 °C
Ring material: xirodur® A500
Cage material: PEEK
Ball material: PAI

PEEK PAI bearing is the specialist for high chemical and temperature resistance. In combination with the PEEK cage, this material covers applications with continuous operating temperatures from -100 °C to +150 °C and is highly resistant to strong acids in particular. In addition, the individual parts of this material combination have FDA conformity. Due to its medium wear resistance as well as higher price, this material should also be chosen only for such applications.

Typical areas of application:

Food industry (system cleaning with chemicals)
Electroplating
Semiconductor industry
Vacuum applications
Autoclave applications

Tolerances and measuring system:

The tolerances for inner and outer diameters depend on the size. These are often approx. ±0.05 mm to the nominal dimension. The bearing rings are usually injection molded and naturally exhibit a certain ovality. For this reason, the caliper gauge is used to measure 90° to the injection point (if present) over the entire width of the bearing. The dimensions and tolerances are designed to meet an easy press fit by hand when using a H7 mounting as well as shaft h6. Additional axial securing by means of a circlip (shaft) and snap ring (housing) is recommended to prevent axial displacement.

peek pai bearing

Mounting recommendation:

PEEK PAI ball

1. mounting (tolerance H7)

2. front side (balls visible)

3. rear side (cage visible)

4. press in ball bearing with front side first

5. mount shaft (tolerance h6) with chamfer

6. an axial safety device must be provided

General properties

	Balls material	Polyamidimid (PAI)
	Density	1.23 g/cm³
	Colour	brown
	Max. Moisture Absorption	0.1 Wt.- %
	Max. Water Absorption	0.4 Wt.- %

Mechanical properties

	Max. speed (rpm)	2700
	Dynamic load capacity	25 N
	Modulus of elasticity	4300 MPa
	Flexural strength (at 20 °C/68 °F)	130 MPa
	Shore-D hardness	85

General chemical resistance

	Alcohol	+ resistant
	Greases, oils without additives	+ resistant
	Hydrocarbons	+ resistant
	Fuels	+ resistant
	Strong alkalines	+ resistant
	Strong acids	+ resistant
	Diluted alkalines	+ resistant
	Diluted acids	+ resistant