51122NSKThrust

Name: NSK 51122 Thrust Bearing
Brand: NSK
SKU: 51122

51122 is a NSK thrust bearing, bore 110 mm, O.D. 145 mm, height 25 mm, dynamic rating 19,700 lbs. Dimensions, drawing, interchanges and price.

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Bore d110mm

Outside dia. D145mm

Overall width T25mm

Dynamic Cr19,700lbs

Static C0r64,800lbs

Limiting speed1,700rpm

Weight1.039kg

Cr / C0r0.3

Mean dia. dm127.5mm

Original catalogue drawing - NSK catalogue, page 147

51122 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	110	4.3307
D	Outside diameter	145	5.7087
T	Overall assembly width	25	0.9843

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)	110
Bore d (in)	4.3307
Outside dia. D (mm)	145
Outside dia. D (in)	5.7087
Overall width T (mm)	25
Overall width T (in)	0.9843

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	19700
Basic static axial rating Coa (lbs)	64800
Limiting speed - grease (rpm)	1,700
Limiting speed - oil (rpm)	2,400

Weight

Weight (kg)	1.039

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	5.161
Housing shoulder Da (in)	4.886

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	21,907	102	3,386
6	14,605	392	13,083
8	10,954	1,024	34,133
10	8,763	2,154	71,814
15	5,842	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 87,630 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.149 (dimensions) / p.150 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
29322	NSK	Thrust	110	190	48	530 kN	5.25
29322E	NSK	Thrust	110	190	48	120,000 lbs	5.262
29422	NSK	Thrust	110	230	73	1010 kN	-
29422E	NSK	Thrust	110	230	73	227,000 lbs	13.29
51222	NSK	Thrust	110	160	38	30,600 lbs	2.422
51322	NSK	Thrust	110	190	63	282 kN	7.55
51322X	NSK	Thrust	110	190	63	63,500 lbs	7.18
51324	NSK	Thrust	110	210	70	330 kN	10.1

Request a quotation for 51122

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