6004NSKBall

Name: NSK 6004 Ball Bearing
Brand: NSK
SKU: 6004

6004 is a NSK ball bearing, bore 20 mm, O.D. 42 mm, width 12 mm, dynamic rating 2,110 lbs. Dimensions, drawing, interchanges and price.

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Bore d20mm

Outside dia. D42mm

Width B12mm

Dynamic Cr2,110lbs

Static C0r1,130lbs

Limiting speed18,000rpm

Weight0.073kg

Cr / C0r1.87

Mean dia. dm31mm

Original catalogue drawing - NSK catalogue, page 15

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	20	0.7874
D	Outside diameter	42	1.6535
B	Inner-ring / bearing width	12	0.4724
r	Chamfer (min)	0.61	0.024

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)	20
Bore d (in)	0.7874
Outside dia. D (mm)	42
Outside dia. D (in)	1.6535
Width B (mm)	12
Width B (in)	0.4724

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	2110
Basic static load rating Cor (lbs)	1130
Limiting speed - grease (rpm)	18,000
Limiting speed - oil (rpm)	20,000
Factor f0	13.8

Weight

Weight (kg)	0.073

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.024
Shaft shoulder da min (in)	0.945
Shaft shoulder da max (in)	1.005
Housing shoulder Da max (in)	1.496

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 3,000 rpm
4	2,346	64	356
6	1,564	216	1,200
8	1,173	512	2,844
10	939	1,000	5,556
15	626	3,375	18,750

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 9,386 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.17 (dimensions) / p.18 (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
6004	FAG	Ball	20	42	12	9.3 kN	0.069
6004-2RSR	FAG	Ball	20	42	12	9.3 kN	0.071
6004-2Z	FAG	Ball	20	42	12	9.3 kN	0.071
6004-C	FAG	Ball	20	42	12	10 kN	0.07
6004-C-2BRS	FAG	Ball	20	42	12	10 kN	0.071
6004-C-2HRS	FAG	Ball	20	42	12	10 kN	0.069
6004-C-2Z	FAG	Ball	20	42	12	10 kN	0.066
S6004	FAG	Ball	20	42	12	9.3 kN	0.065
S6004-2RSR	FAG	Ball	20	42	12	9.3 kN	0.067
7004-B-2RS-TVP	FAG	Precision / Angular Contact	20	42	12	13.4 kN	0.061

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
20BGR10H	NSK	Precision / Angular Contact	20	42	12	1,690 lbs	0.068
20BGR10S	NSK	Precision / Angular Contact	20	42	12	1,690 lbs	0.068
7004	NSK	Precision / Angular Contact	20	42	12	11.9 kN	0.068
7004A5	NSK	Precision / Angular Contact	20	42	12	2,380 lbs	0.068
7004C	NSK	Precision / Angular Contact	20	42	12	2,490 lbs	0.077

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1204	NSK	Ball	20	47	14	2,250 lbs	0.118
1304	NSK	Ball	20	52	15	2,810 lbs	0.172
16004	NSK	Ball	20	42	8	8.7 kN	0.048
2204	NSK	Ball	20	47	18	3,210 lbs	0.141
2304	NSK	Ball	20	52	21	4,050 lbs	0.236
3204J	NSK	Ball	20	47	20.6	3,960 lbs	0.168
3304J	NSK	Ball	20	52	22.2	4,610 lbs	0.231
5204J	NSK	Ball	20	47	20.6	4,410 lbs	0.118

Request a quotation for 6004

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