6040NSKBall

Name: NSK 6040 Ball Bearing
Brand: NSK
SKU: 6040

6040 is a NSK ball bearing, bore 200 mm, O.D. 310 mm, width 51 mm, dynamic rating 46,500 lbs. Dimensions, drawing, interchanges and price.

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Bore d200mm

Outside dia. D310mm

Width B51mm

Dynamic Cr46,500lbs

Static C0r50,700lbs

Limiting speed1,900rpm

Weight14.061kg

Cr / C0r0.92

Mean dia. dm255mm

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	200	7.874
D	Outside diameter	310	12.2047
B	Inner-ring / bearing width	51	2.0079
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)	200
Bore d (in)	7.8740
Outside dia. D (mm)	310
Outside dia. D (in)	12.2047
Width B (mm)	51
Width B (in)	2.0079

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	46500
Basic static load rating Cor (lbs)	50700
Limiting speed - grease (rpm)	1,900
Limiting speed - oil (rpm)	2,200
Factor f0	15.6

Weight

Weight (kg)	14.061

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	8.307
Shaft shoulder da max (in)	9.121
Housing shoulder Da max (in)	11.772

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 600 rpm
4	51,711	64	1,778
6	34,474	216	6,000
8	25,855	512	14,222
10	20,684	1,000	27,778
15	13,789	3,375	93,750

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 206,842 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
6040-M	FAG	Ball	200	310	51	231 kN	14.4
QJ1040-N2-MPA	FAG	Ball	200	310	51	390 kN	15
NU1040-M1	FAG	Cylindrical Roller	200	310	51	470 kN	14.1
NU1040-XL-M1	FAG	Cylindrical Roller	200	310	51	470 kN	14.1
B7040-C-T-P4S	FAG	Precision / Angular Contact	200	310	51	305 kN	11.6
B7040-E-T-P4S	FAG	Precision / Angular Contact	200	310	51	290 kN	11.5

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1040	NSK	Cylindrical Roller	200	310	51	88,000 lbs	14.061
NU1040	NSK	Cylindrical Roller	200	310	51	480 kN	14
7040	NSK	Precision / Angular Contact	200	310	51	264 kN	13.7
7040A5	NSK	Precision / Angular Contact	200	310	51	48,300 lbs	13.703
7040C	NSK	Precision / Angular Contact	200	310	51	59,500 lbs	13.503

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16040	NSK	Ball	200	310	34	177 kN	10
6240	NSK	Ball	200	360	58	296 kN	26.7
6340	NSK	Ball	200	420	80	85,300 lbs	57.606
6840	NSK	Ball	200	250	24	16,600 lbs	2.654
6940	NSK	Ball	200	280	38	32,100 lbs	7.176
7240B	NSK	Ball	200	360	58	68,300 lbs	25.31
7340B	NSK	Ball	200	420	80	97,000 lbs	53.07

Request a quotation for 6040

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