KBS25-PP-AS Plain Bearings

Product Details

Bearing number	638/4-2Z
Size (mm)	9x4x4
Bore Diameter (mm)	9
Outer Diameter (mm)	4
Width (mm)	4
d	4 mm
D	9 mm
B	4 mm
d1	5.2 mm
D2	8.1 mm
r1,2 - min.	0.1 mm
da - min.	4.6 mm
da - max.	5.1 mm
Da - max.	8.4 mm
ra - max.	0.1 mm
Basic dynamic load rating - C	0.54 kN
Basic static load rating - C0	0.18 kN
Fatigue load limit - Pu	0.07 kN
Reference speed	140000 r/min
Limiting speed	70000 r/min
Calculation factor - kr	0.015
Calculation factor - f0	10
Category	Single Row Ball Bearing
Inventory	0.0
Minimum Buy Quantity	N/A
Weight / Kilogram	0.001
Product Group	B00308
Enclosure	2 Metal Shields
Precision Class	ABEC 1 \| ISO P0
Maximum Capacity / Filling Slot	No
Rolling Element	Ball Bearing
Snap Ring	No
Internal Special Features	No
Cage Material	Steel
Internal Clearance	C0-Medium
Inch - Metric	Metric
Long Description	4MM Bore; 9MM Outside Diameter; 4MM Outer Race Width; 2 Metal Shields; Ball Bearing; ABEC 1 \| ISO P0; No Filling Slot; No Snap Ring; No Internal Special Features; C0-Medium Internal Clearance; Steel C
Other Features	Deep Groove
UNSPSC	31171504
Harmonized Tariff Code	8482.10.50.68
Noun	Bearing
Keyword String	Ball
Weight / LBS	0.0013
Bore	0.157 Inch \| 4 Millimeter
Outside Diameter	0.354 Inch \| 9 Millimeter
Inner Race Width	0 Inch \| 0 Millimeter
Outer Race Width	0.157 Inch \| 4 Millimeter
d1 ≈	5.2 mm
D2 ≈	8.1 mm
r1,2 min.	0.1 mm
da min.	4.6 mm
da max.	5.1 mm
Da max.	8.4 mm
ra max.	0.1 mm
Basic dynamic load rating C	0.423 kN
Basic static load rating C0	0.116 kN
Fatigue load limit Pu	0.005 kN
Calculation factor kr	0.015
Calculation factor f0	6.5
Mass bearing	0.0013 kg