What direction should thrust bearings be mounted in?

Mount so that the outer rings are in the direction where load is applied. As well, the larger diameter should be centered.

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Part Number Complete

WS81218

type Inner Dia. d Outer Dia. D Width B Revolution Frequency CAD Days to Ship

Specification/Dimensions

type
- WS812
- WS893
Clear
Inner Dia. d(Ø)
35

40

45

50

55

60

65

70

75

80

85

90

100

110

120

140
Clear
Outer Dia. D(Ø)
62

68

73

78

85

90

95

100

105

110

115

125

135

150

155

160

170

200
Clear
Width B(mm)
5

5.25

5.5

6.5

7

7.5

8

8.25

8.5

9.5

10.5

11.5

12

13.5
Clear
Revolution Frequency(rpm)
1,400

1700

1800

1900

2100

2300

2500

2600

2700

2900

3100

3200

3300

3600

3800

4000

4100

4400

4900
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

8 Day(s) or Less

9 Day(s) or Less
Clear

Specify Alterations

Needle Roller Bearing, Thrust Roller Bearing, WS Type Raceway Ring (WS81218)

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Caution

* The photos are representative only. Please refer to the manufacturer's catalogue for detailed shape.

Product Description

Disc-shaped raceway that is used for the inner race of thrust needle roller bearings.
[Features]
·Suitable for high-load applications and has a large axial rigidity allowing it to receive axial load only.
[Application]
·Ideal for steel equipment, pumps, machine tools, wind power generation, etc.

Needle roller bearing, thrust roller bearing, WS type bearing ring (Parts are sold separately. Please refer to the manufacturer's catalog for combinations.)

Needle Roller Bearing Thrust Cylindrical Roller Bearing WS Series Raceway Ring

Dimensions table

Nominal number				Reference dimensions mm		Mounting dimensions mm			Weight kg (reference)
Bearing	with thrust retainer Cylindrical Roller	Inner Race	Outer Race	Eb	Ea	da Minimum	Db Maximum	ras Maximum	811 812 893 874	K811 K812 K893 K874	WS GS
81100T2	K81100T2	WS81100	GS81100	13.5	21.3	21	14	0.3	0.0195	0.0035	0.008
81101T2	K81101T2	WS81101	GS81101	15.5	23.3	23	16	0.3	0.022	0.004	0.009
81102T2	K81102T2	WS81102	GS81102	17.2	25.0	25	18	0.3	0.026	0.006	0.010
81103T2	K81103T2	WS81103	GS81103	19.2	27.0	27	20	0.3	0.030	0.008	0.011
81104T2	K81104T2	WS81104	GS81104	22.4	32.3	32	23	0.3	0.040	0.012	0.014
81105T2	K81105T2	WS81105	GS81105	27.6	38.7	39	28	0.6	0.060	0.018	0.021
81106T2	K81106T2	WS81106	GS81106	33.1	43.9	44	33	0.6	0.070	0.020	0.025
81206T2	K81206T2	WS81206	GS81206	32.8	49.0	48	33	0.6	0.140	0.050	0.045
89306	K89306	WS89306	GS89306	34.0	56.4	56	34	1	0.250	0.046	0.100
81107T2	K81107T2	WS81107	GS81107	38.0	48.9	49	38	0.6	0.090	0.024	0.033
81207T2	K81207T2	WS81207	GS81207	39.8	56.0	56	41	1	0.235	0.065	0.085
89307	K89307	WS89307	GS89307	40.0	64.4	64	40	1	0.360	0.064	0.150
81108T2	K81108T2	WS81108	GS81108	43.2	56.4	56	44	0.6	0.135	0.035	0.044
81208T2	K81208T2	WS81208	GS81208	43.7	62.9	63	44	1	0.265	0.085	0.090
89308	K89308	WS89308	GS89308	46.0	74.4	74	46	1	0.520	0.100	0.210
87408	K87408	WS87408	GS87408	46	87	88	45	1.1	0.78	0.12	0.33
81109T2	K81109T2	WS81109	GS81109	48.4	61.6	61	49	0.6	0.150	0.040	0.055
81209T2	K81209T2	WS81209	GS81209	48.8	68.0	68	49	1	0.310	0.100	0.105
89309	K89309	WS89309	GS89309	50.9	81.3	81	51	1	0.670	0.140	0.270
87409	K87409	WS87409	GS87409	53	96	97	52	1.1	1.05	0.17	0.44
81110T2	K81110T2	WS81110	GS81110	53.2	66.4	66	54	0.6	0.165	0.045	0.060
81210T2	K81210T2	WS81210	GS81210	53.7	73.1	73	54	1	0.385	0.105	0.140
89310	K89310	WS89310	GS89310	58.0	90.4	90	58	1	0.940	0.180	0.380
87410	K87410	WS87410	GS87410	56	106	107	55	1.5	1.38	0.26	0.56
81111T2	K81111T2	WS81111	GS81111	57.8	75.2	75	58	0.6	0.250	0.060	0.095
81211T2	K81211T2	WS81211	GS81211	60.1	83.4	83	61	1	0.610	0.190	0.210
89311	K89311	WS89311	GS89311	63.9	100.3	100	64	1	1.270	0.240	0.520
87411	K87411	WS87411	GS87411	66	116	117	65	1.5	1.77	0.3	0.74

About allowable rotational speed

This permissible rotational speed is the permissible rotational speed that can be achieved based on the following assumptions.
For the allowable rotational speed under usage conditions that are different from the following, please refer to the "Precision Roller Bearing Catalog" or contact the manufacturer.

Use under conditions where an appropriate amount of recommended grease is filled, a sufficient break-in operation is performed, and heat generated is eliminated by such as cooling the outer housing
Use under constant preload

: 30; 45; 60

Part Number
WS81218

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Width B (mm)	Basic Load Rating: Dynamic Load (N)	Revolution Frequency (rpm)
	₹ 3,328.75	1 Piece(s)		8 Day(s) or more	-	90	135	10.5	213000	2100

Product TOP

Basic Information

Raceway Ring Shape	Cylindrical Roller	Load Direction	Thrust	Inner/Outer Ring Material	Steel
Number of Raceway Ring Rows	Single Row	Size Standards	Metric System	Specifications/Environment	Standard
Rolling Element Material	Steel	Outer Ring Type	Flat	Retainer Type	No
Lubricant	NA	Internal Clearance Symbol	NA	Format symbol	WS
Holder Symbol	NA	Specifications	Standard	Seal, Shield	NA
Symbol of Bearing Ring Shape	NA

Please check the type/dimensions/specifications of the part WS81218 in the Needle Roller Bearing, Thrust Roller Bearing, WS Type Raceway Ring series.

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: What direction should thrust bearings be mounted in?: Answer: Mount so that the outer rings are in the direction where load is applied.
As well, the larger diameter should be centered.

Product variants

Part Number
WS81210
WS81211
WS81212
WS81220
WS81222
WS81224

Standard Unit Price	Minimum order quantity	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Width B (mm)	Basic Load Rating: Dynamic Load (N)	Revolution Frequency (rpm)
₹ 1,148.22	1 Piece(s)	8 Day(s) or more	-	50	78	6.5	85000	3800
₹ 1,402.69	1 Piece(s)	8 Day(s) or more	-	55	90	7	121000	3300
₹ 1,484.40	1 Piece(s)	8 Day(s) or more	-	60	95	7.5	126000	3100
₹ 3,902.00	1 Piece(s)	8 Day(s) or more	-	100	150	11.5	243000	1900
₹ 4,388.20	1 Piece(s)	8 Day(s) or more	10	110	160	11.5	258000	1800
₹ 5,171.75	1 Piece(s)	8 Day(s) or more	10	120	170	12	264000	1700

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