6315NSKBall

Name: NSK 6315 Ball Bearing
Brand: NSK
SKU: 6315

6315 is a NSK ball bearing, bore 75 mm, O.D. 160 mm, width 37 mm, dynamic rating 25,500 lbs. Dimensions, drawing, interchanges and price.

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Bore d75mm

Outside dia. D160mm

Width B37mm

Dynamic Cr25,500lbs

Static C0r17,400lbs

Limiting speed4,300rpm

Weight2.998kg

Cr / C0r1.47

Mean dia. dm117.5mm

Original catalogue drawing - NSK catalogue, page 19

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	75	2.9528
D	Outside diameter	160	6.2992
B	Inner-ring / bearing width	37	1.4567
r	Chamfer (min)	2.007	0.079

Notes

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)	75
Bore d (in)	2.9528
Outside dia. D (mm)	160
Outside dia. D (in)	6.2992
Width B (mm)	37
Width B (in)	1.4567

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	25500
Basic static load rating Cor (lbs)	17400
Limiting speed - grease (rpm)	4,300
Limiting speed - oil (rpm)	5,000
Factor f0	13.2

Weight

Weight (kg)	2.998

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	3.425
Shaft shoulder da max (in)	3.881
Housing shoulder Da max (in)	5.827

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,400 rpm
4	28,357	64	762
6	18,905	216	2,571
8	14,179	512	6,095
10	11,343	1,000	11,905
15	7,562	3,375	40,179

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 113,430 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.21 (dimensions) / p.22 (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
1315-K-M-C3	FAG	Ball	75	160	37	80 kN	3.81
1315-M	FAG	Ball	75	160	37	80 kN	3.86
6315	FAG	Ball	75	160	37	123 kN	3.18
6315-2RSR	FAG	Ball	75	160	37	123 kN	3.18
6315-2Z	FAG	Ball	75	160	37	123 kN	3.23
QJ315-N2-MPA	FAG	Ball	75	160	37	212 kN	3.95
QJ315-XL-N2-MPA	FAG	Ball	75	160	37	229 kN	3.95
N315-E-TVP2	FAG	Cylindrical Roller	75	160	37	285 kN	3.34
N315-E-XL-TVP2	FAG	Cylindrical Roller	75	160	37	285 kN	3.34
NJ315-E-TVP2	FAG	Cylindrical Roller	75	160	37	285 kN	3.39

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1315	NSK	Ball	75	160	37	18,000 lbs	3.552
7315B	NSK	Ball	75	160	37	26,500 lbs	3.597
BL315	NSK	Ball	75	160	37	33,400 lbs	3.375
315	NSK	Cylindrical Roller	75	160	37	40,300 lbs	3.221
NU315	NSK	Cylindrical Roller	75	160	37	220 kN	3.26
NU315E	NSK	Cylindrical Roller	75	160	37	295 kN	3.73
21315EAE4	NSK	Spherical Roller	75	160	37	310 kN	3.64
3000	NSK	Tapered Roller	75	160	37	259 kN	3.47

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1215	NSK	Ball	75	130	25	8,770 lbs	1.352
1315	NSK	Ball	75	160	37	18,000 lbs	3.552
16015	NSK	Ball	75	115	13	30.5 kN	0.463
2215	NSK	Ball	75	130	31	10,000 lbs	1.542
2315	NSK	Ball	75	160	55	28,100 lbs	4.672
5215J	NSK	Ball	75	130	41.3	21,100 lbs	1.901
6015	NSK	Ball	75	115	20	8,890 lbs	0.64
6215	NSK	Ball	75	130	25	14,900 lbs	1.197

Request a quotation for 6315

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