51305NSKThrust

Name: NSK 51305 Thrust Bearing
Brand: NSK
SKU: 51305

51305 is a NSK thrust bearing, bore 25 mm, O.D. 52 mm, height 18 mm, dynamic rating 8,040 lbs. Dimensions, drawing, interchanges and price.

Request a quote WhatsApp Email us Search the catalog

Bore d25mm

Outside dia. D52mm

Overall width T18mm

Dynamic Cr8,040lbs

Static C0r13,700lbs

Limiting speed3,200rpm

Weight0.169kg

Cr / C0r0.59

Mean dia. dm38.5mm

Original catalogue drawing - NSK catalogue, page 143

51305 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	52	2.0472
T	Overall assembly width	18	0.7087

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)	52
Outside dia. D (in)	2.0472
Overall width T (mm)	18
Overall width T (in)	0.7087

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	8040
Basic static axial rating Coa (lbs)	13700
Limiting speed - grease (rpm)	3,200
Limiting speed - oil (rpm)	5,000

Weight

Weight (kg)	0.169

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	1.615
Housing shoulder Da (in)	1.418

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,000 rpm
4	8,941	102	1,693
6	5,961	392	6,542
8	4,470	1,024	17,067
10	3,576	2,154	35,907
15	2,384	8,323	138,724

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 35,764 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.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
2205-2RS-TVH	FAG	Ball	25	52	18	12.3 kN	0.161
2205-K-2RS-TVH-C3	FAG	Ball	25	52	18	12.3 kN	0.157
2205-K-TVH-C3	FAG	Ball	25	52	18	17.3 kN	0.152
2205-TVH	FAG	Ball	25	52	18	17.3 kN	0.156
4205-B-TVH	FAG	Ball	25	52	18	22.9 kN	0.19
62205-2RSR	FAG	Ball	25	52	18	14.9 kN	0.155
NJ2205-E-TVP2	FAG	Cylindrical Roller	25	52	18	41.5 kN	0.17
NJ2205-E-XL-TVP2	FAG	Cylindrical Roller	25	52	18	41.5 kN	0.17
NU2205-E-TVP2	FAG	Cylindrical Roller	25	52	18	41.5 kN	0.165
NU2205-E-XL-TVP2	FAG	Cylindrical Roller	25	52	18	41.5 kN	0.165

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
2205	NSK	Ball	25	52	18	3,820 lbs	0.159
2205	NSK	Cylindrical Roller	25	52	18	5,300 lbs	0.163
NU2205E	NSK	Cylindrical Roller	25	52	18	43 kN	0.16
22205CE4	NSK	Spherical Roller	25	52	18	37.5 kN	0.17
HR32205	NSK	Tapered Roller	25	52	18	43 kN	0.19
HR32205C	NSK	Tapered Roller	25	52	18	7,870 lbs	0.188
HR32205J	NSK	Tapered Roller	25	52	18	8,990 lbs	0.191

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
51105	NSK	Thrust	25	42	11	4,430 lbs	0.056
51205	NSK	Thrust	25	47	15	6,300 lbs	0.111
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 51305

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

Online enquiry form richard@bearingsfit.com WhatsApp +86 156 2149 6516