51201NSKThrust

Name: NSK 51201 Thrust Bearing
Brand: NSK
SKU: 51201

51201 is a NSK thrust bearing, bore 12 mm, O.D. 28 mm, height 11 mm, dynamic rating 2,970 lbs. Dimensions, drawing, interchanges and price.

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Bore d12mm

Outside dia. D28mm

Overall width T11mm

Dynamic Cr2,970lbs

Static C0r4,270lbs

Limiting speed5,600rpm

Weight0.031kg

Cr / C0r0.7

Mean dia. dm20mm

Original catalogue drawing - NSK catalogue, page 143

51201 NSK Thrust bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

Symbol	Dimension	mm	inch
d	Bore diameter	12	0.4724
D	Outside diameter	28	1.1024
T	Overall assembly width	11	0.4331

Notes

Thrust bearing ratings are axial values Ca / Coa; T is the overall height. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)	12
Bore d (in)	0.4724
Outside dia. D (mm)	28
Outside dia. D (in)	1.1024
Overall width T (mm)	11
Overall width T (in)	0.4331

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	2970
Basic static axial rating Coa (lbs)	4270
Limiting speed - grease (rpm)	5,600
Limiting speed - oil (rpm)	8,500

Weight

Weight (kg)	0.031

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.024
Shaft shoulder da min (in)	0.867
Housing shoulder Da (in)	0.709

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,800 rpm
4	3,303	102	941
6	2,202	392	3,634
8	1,651	1,024	9,481
10	1,321	2,154	19,948
15	881	8,323	77,069

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 13,211 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	NSK
Source catalogue	NSK inch product catalogue
Catalogue page	p.145 (dimensions) / p.146 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
51101	NSK	Thrust	12	26	9	2,330 lbs	0.021
51100	NSK	Thrust	10	24	9	2,270 lbs	0.019
51200	NSK	Thrust	10	26	11	2,860 lbs	0.028
51102	NSK	Thrust	15	28	9	2,380 lbs	0.23
51202	NSK	Thrust	15	32	12	3,770 lbs	0.043
52202	NSK	Thrust	15	32	None	16.7 kN	0.09
51103	NSK	Thrust	17	30	9	2,570 lbs	0.025
51203	NSK	Thrust	17	35	12	3,880 lbs	0.05

Request a quotation for 51201

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