HR30312NSKTapered Roller

Name: NSK HR30312 Tapered Roller Bearing
Brand: NSK
SKU: HR30312

HR30312 is a NSK tapered roller bearing, bore 60 mm, O.D. 130 mm, width 31 mm, dynamic rating 214 kN. Dimensions, drawing, interchanges and price.

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Bore d60mm

Outside dia. D130mm

Width B31mm

Dynamic Cr214kN

Static C0r201kN

Limiting speed3,000rpm

Weight2.03kg

Cr / C0r1.06

Mean dia. dm95mm

Original catalogue drawing - NSK E1103, page 264

HR30312 NSK Tapered Roller 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	60	2.3622
D	Outside diameter	130	5.1181
B	Inner-ring / bearing width	31	1.2205
T	Overall assembly width	33.5	1.3189
C	Cup / outer-ring width	26	1.0236
r	Chamfer (min)	2.5	0.0984

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
Outside dia. D (mm)	130
Width B (mm)	31
Overall width T (mm)	33.5
Cup width C (mm)	26

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	48109
Basic static load rating Cor (lbs)	45187
Basic dynamic load rating Cr (N)	214000
Basic static load rating C0r (N)	201000
Limiting speed - grease (rpm)	3,000
Effective load centre a (mm)	3

Weight

Weight (kg)	2.03

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	2.5

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,000 rpm
4	53,500	102	1,693
6	35,667	392	6,542
8	26,750	1,024	17,067
10	21,400	2,154	35,907
15	14,267	8,323	138,724

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 214,000 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 CAT. No. E1103 (metric)
Catalogue page	p.264 (dimensions)

Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.

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
6312	NSK	Ball	60	130	31	18,400 lbs	1.701
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

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
32212C	NSK	Tapered Roller	60	110	28	23,600 lbs	1.111
32312C	NSK	Tapered Roller	60	130	46	44,100 lbs	2.79
3800	NSK	Tapered Roller	60	125	33.5	186 kN	2.03
HR30212	NSK	Tapered Roller	60	110	22	127 kN	0.93
HR30212J	NSK	Tapered Roller	60	110	22	23,400 lbs	0.93
HR30312J	NSK	Tapered Roller	60	130	31	39,100 lbs	2.032
HR31312J	NSK	Tapered Roller	60	130	31	33,900 lbs	1.982
HR32012	NSK	Tapered Roller	60	95	23	105 kN	0.608

Request a quotation for HR30312

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