Thrust Bearing

The thrust ball bearing is a separate type bearing with a contact angle of 90 °, which can only bear axial load and has a low limit speed.

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Thrust Bearing

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Thrust Bearing

Detail

1. Main structural form

1. One-way thrust ball bearing type 51000 This type of bearing can only bear axial load in one direction, and can limit the movement of the shaft and housing in one direction.

2. Two-way thrust ball bearing type 52000 This type of bearing can bear axial loads in two directions, and can limit the axial movement of the shaft and the housing in two directions.

2. Cage material

When the outer diameter is not greater than 250mm, steel plate (or belt) punching cages are generally used; when the outer diameter is greater than 250mm, solid cages are used. The details are shown in the table below.

Bearing series	Formed cage	Stamping cage	Car cage
511 512 513 514	51100～51106 —— —— ——	51107～51152 51200～51224 51305～51320 51405～51415	51156～511/530 51226～51260 51322～51340 51416～51420
522		52202～52224	52226, 52228
523		52305～52320	52322, 52324
524		52405～52415	52416～52426

3. Minimum axial load

During the operation of the thrust ball bearing, if the external axial load is too small and the bearing is not compressed, due to the action of inertial force, the steel ball will slip and destroy the normal operation of the bearing. Therefore, a certain axial load must be applied to the bearing during use.

4. Allowable inclination angle

The two supporting surfaces of thrust ball bearings must be parallel without any deviation. The centerline of the shaft and the supporting surface of the housing should be guaranteed to be perpendicular, if not, spherical seat rings and self-aligning washers can be used to compensate. If you have any questions, please contact the Technology Center of Renben Group.

5. Tolerance

(1) Shaft ring and middle ring

Bearing nominal inner diameter d or center ring nominal inner diameter d₂ mm		Average inner diameter deviation in a single plane ∆_dmp or ∆_d2mp				Single plane inner diameter change momentum V_dSporV_d2Sp		Shaft ring middle ring thickness variation S_i
		0 level 6 level 5 level		4 level		0 level 6 level 5 level	4 level	0 level	6 level	5 level	4 level
Exceed	Arrive	up	Down	up	Down	Maximum		Maximum
— 18 30 50 80 120 180 250 315 400 500 630 800 1000	18 30 50 80 120 180 250 315 400 500 630 800 1000 1250	0 0 0 0 0 0 0 0 0 0 0 0 0 0	-8 -10 -12 -15 -20 -25 -30 -35 -40 -45 -50 -75 -100 -125	0 0 0 0 0 0 0 0 0 0 0 0 0 0	-7 -8 -10 -12 -15 -18 -22 -25 -30 -35 -40 -50 — —	6 8 9 11 15 19 23 26 30 34 38 — — —	5 6 8 9 11 14 17 19 23 26 30 — — —	10 10 10 10 15 15 20 25 30 30 35 40 45 50	5 5 6 7 8 9 10 13 15 18 21 25 30 85	3 3 3 4 4 5 5 7 7 9 11 13 15 18	2 2 2 3 3 4 4 5 5 6 7 8 — —

(2) Seat ring

Bearing nominal outer diameter D mm		Average outer diameter deviation in a single plane ∆_Dmp or ∆_D2mp				Single plane outer diameter variation V_DSpor ∆_D2Sp		Shaft ring or middle ring raceway thickness variation S_e
		0、6、5 level		4 level		0、6、5 level	4 level	0 level	6 level	5 level	4 level
Exceed	Arrive	up	Down	up	Down	Maximum		Maximum
— 18 30 50 80 120 180 250 315 400 500 630 800 1000	18 30 50 80 120 180 250 315 400 500 630 800 1000 1250	0 0 0 0 0 0 0 0 0 0 0 0 0 0	-11 -13 -16 -19 -22 -25 -30 -35 -40 -45 -50 -75 -125 -160	0 0 0 0 0 0 0 0 0 0 0 0 0 0	7 8 9 -11 -13 -15 -20 -25 -28 -33 -38 -45 — —	8 10 12 14 17 19 23 26 30 34 38 55 75 —	5 6 7 8 10 11 15 19 21 25 29 34 — —	The same S_i value as the same bearing shaft ring