Ball Screw Bearing, Diameter 20mm

4.5 out of 5 based on 2 reviews | Write a review

$165.68

Sale ball screw bearing shaft at low price, diameter 4mm, 6mm, 10mm, 15mm and 20mm, high dimensional accuracy, friction resistance and long service life time. Ball screw support bearing is widely used in CNC machinery, fine machine tools, industrial machinery, electronic machinery, conveying machinery and aerospace industry.

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SKU: ATO-BSB-EK

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Delivery date: 6-12 days

Overview

Ball screw end support accuracy grade C5, diameter can be selected from 4mm, 6mm, 10mm to 20mm, the parts have low friction between the nut and the lead screw and have a long service life time.

Note: Class C5 uses angular contact bearings preloaded with zero axial clearance.

Specification

Model	ATO-BSB-EK4	ATO-BSB-EK6	ATO-BSB-EK10	ATO-BSB-EK15	ATO-BSB-EK20
Shaft Diameter	4mm	6mm	10mm	15mm	20mm
Accuracy Grade	C5	C5	C5	C5	C5
L	15	20	24	25	42
L1	5.5	5.5	6	6	10
L2	17.5	22	29.5	36	50
L3	3	3.5	6	5	10
B	34	42	70	80	95
H	19	25	43	49	58
b±0.02	17	21	35	40	47.5
h1±0.05	10	13	25	30	30
B1	18	18	36	41	56
h	7	20	24	25	25
P	26	30	52	60	75
d1	4.5	5.5	9	11	11
d2	/	9.5	/	/	/
h	/	11		/	/
M	M2.6	M3	M3	M3	M4
T	10	14	16	22	30
Weight	0.06kg	0.14kg	0.46kg	0.55kg	1.35kg
Certificate	ISO9001, REACH, RoHS
Warranty	12 Months

Ball Screw Bearing Dimension (unit: mm)

20mm Diameter Ball Screw Support Bearing Part Details

Number	Part Name	Quantity
1	Housing	1PC
2	Bearing	1 Set
3	Holding Lid	1 PC
4	Collar	2 PCS
5	Scal	2 PCS
6	Lock Nut	1 Set
7	Hexagon socket nut	1PC

Tips: The role of ball screw bearing
The two ends of the ball screw can be installed on a fixed seat and a support seat after processing. The support seat is a unity of the two methods. The fixing seat and the supporting seat are installed on both ends of the screw to fix the screw, and the mold uses ball screw bearings. Rotating. In fact, the two ends of the ball screw are installed at the two ends of the ball screw to fix the wire.

Existing reviews of Ball Screw Bearing, Diameter 20mm

Precise and reliable

Using the 20mm diameter model in our CNC retrofit project. The C5 accuracy provides smooth movement with minimal backlash. Installation was straightforward with standard mounting holes. After months of continuous use, it shows no signs of wear.

From: Arthur | Date: 16/10/2025

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Smooth rotation ball screw bearing

Got the 20mm ball screw bearing for my CNC build, and it's been a solid choice. Installation was straightforward, and it runs quietly with zero wobble. The smooth rotation makes my machine's movements precise, and it hasn't shown any wear even after weeks of daily use. Feels like a part I can count on for the long haul.

From: Rowan | Date: 13/08/2025

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