51105NSKThrust

Name: NSK 51105 Thrust Bearing
Brand: NSK
SKU: 51105

51105 is a NSK thrust bearing, bore 25 mm, O.D. 42 mm, height 11 mm, dynamic rating 4,430 lbs. Dimensions, drawing, interchanges and price.

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Bore d25mm

Outside dia. D42mm

Overall width T11mm

Dynamic Cr4,430lbs

Static C0r8,370lbs

Limiting speed4,800rpm

Weight0.056kg

Cr / C0r0.53

Mean dia. dm33.5mm

Original catalogue drawing - NSK catalogue, page 143

51105 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	25	0.9843
D	Outside diameter	42	1.6535
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)	25
Bore d (in)	0.9843
Outside dia. D (mm)	42
Outside dia. D (in)	1.6535
Overall width T (mm)	11
Overall width T (in)	0.4331

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	4430
Basic static axial rating Coa (lbs)	8370
Limiting speed - grease (rpm)	4,800
Limiting speed - oil (rpm)	7,100

Weight

Weight (kg)	0.056

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.024
Shaft shoulder da min (in)	1.379
Housing shoulder Da (in)	1.261

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,600 rpm
4	4,926	102	1,058
6	3,284	392	4,089
8	2,463	1,024	10,667
10	1,971	2,154	22,442
15	1,314	8,323	86,703

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 19,706 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
51205	NSK	Thrust	25	47	15	6,300 lbs	0.111
51305	NSK	Thrust	25	52	18	8,040 lbs	0.169
51405	NSK	Thrust	25	60	24	12,500 lbs	0.334
52205	NSK	Thrust	25	47	None	28 kN	0.236
52305	NSK	Thrust	25	52	None	36 kN	0.35
52405	NSK	Thrust	25	60	None	56 kN	0.68
51104	NSK	Thrust	20	35	10	3,390 lbs	0.037
51204	NSK	Thrust	20	40	14	5,040 lbs	0.077

Request a quotation for 51105

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