6312NSKBall

Name: NSK 6312 Ball Bearing
Brand: NSK
SKU: 6312

6312 is a NSK ball bearing, bore 60 mm, O.D. 130 mm, width 31 mm, dynamic rating 18,400 lbs. Dimensions, drawing, interchanges and price.

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Bore d60mm

Outside dia. D130mm

Width B31mm

Dynamic Cr18,400lbs

Static C0r11,680lbs

Limiting speed5,300rpm

Weight1.701kg

Cr / C0r1.58

Mean dia. dm95mm

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	60	2.3622
D	Outside diameter	130	5.1181
B	Inner-ring / bearing width	31	1.2205
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)	60
Bore d (in)	2.3622
Outside dia. D (mm)	130
Outside dia. D (in)	5.1181
Width B (mm)	31
Width B (in)	1.2205

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	18400
Basic static load rating Cor (lbs)	11680
Limiting speed - grease (rpm)	5,300
Limiting speed - oil (rpm)	6,300
Factor f0	13.1

Weight

Weight (kg)	1.701

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	2.835
Shaft shoulder da max (in)	3.113
Housing shoulder Da max (in)	4.646

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,700 rpm
4	20,462	64	627
6	13,641	216	2,118
8	10,231	512	5,020
10	8,185	1,000	9,804
15	5,456	3,375	33,088

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 81,847 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
1312-K-TVH-C3	FAG	Ball	60	130	31	58 kN	1.94
1312-TVH	FAG	Ball	60	130	31	58 kN	1.97
6312	FAG	Ball	60	130	31	81.5 kN	1.75
6312-2RSR	FAG	Ball	60	130	31	81.5 kN	1.79
6312-2Z	FAG	Ball	60	130	31	81.5 kN	1.79
6312-C	FAG	Ball	60	130	31	89 kN	1.71
6312-C-2BRS	FAG	Ball	60	130	31	89 kN	1.75
6312-C-2HRS	FAG	Ball	60	130	31	89 kN	1.75
6312-C-2Z	FAG	Ball	60	130	31	89 kN	1.74
QJ312-MPA	FAG	Ball	60	130	31	146 kN	2.2

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1312	NSK	Ball	60	130	31	12,800 lbs	2.032
7312B	NSK	Ball	60	130	31	19,100 lbs	2
BL312	NSK	Ball	60	130	31	22,700 lbs	1.846
312	NSK	Cylindrical Roller	60	130	31	27,700 lbs	2.041
NU312	NSK	Cylindrical Roller	60	130	31	152 kN	1.82
NU312E	NSK	Cylindrical Roller	60	130	31	184 kN	2.06
21312EAE4	NSK	Spherical Roller	60	130	31	238 kN	1.98
HR30312	NSK	Tapered Roller	60	130	31	214 kN	2.03

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1212	NSK	Ball	60	110	22	6,740 lbs	0.898
1312	NSK	Ball	60	130	31	12,800 lbs	2.032
16012	NSK	Ball	60	95	11	22 kN	0.281
2212	NSK	Ball	60	110	28	7,640 lbs	1.152
2312	NSK	Ball	60	130	46	19,400 lbs	2.83
3212J	NSK	Ball	60	110	36.5	15,600 lbs	1.397
3312J	NSK	Ball	60	130	54	25,600 lbs	3.243
5212J	NSK	Ball	60	110	36.5	15,600 lbs	1.352

Request a quotation for 6312

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