6936NSKBall

Name: NSK 6936 Ball Bearing
Brand: NSK
SKU: 6936

6936 is a NSK ball bearing, bore 180 mm, O.D. 250 mm, width 33 mm, dynamic rating 26,600 lbs. Dimensions, drawing, interchanges and price.

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Bore d180mm

Outside dia. D250mm

Width B33mm

Dynamic Cr26,600lbs

Static C0r28,800lbs

Limiting speed2,200rpm

Weight4.881kg

Cr / C0r0.92

Mean dia. dm215mm

Original catalogue drawing - NSK catalogue, page 23

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	180	7.0866
D	Outside diameter	250	9.8425
B	Inner-ring / bearing width	33	1.2992
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)	180
Bore d (in)	7.0866
Outside dia. D (mm)	250
Outside dia. D (in)	9.8425
Width B (mm)	33
Width B (in)	1.2992

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	26600
Basic static load rating Cor (lbs)	28800
Limiting speed - grease (rpm)	2,200
Limiting speed - oil (rpm)	2,600
Factor f0	16.4

Weight

Weight (kg)	4.881

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	7.441
Shaft shoulder da max (in)	7.815
Housing shoulder Da max (in)	9.488

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 700 rpm
4	29,581	64	1,524
6	19,720	216	5,143
8	14,790	512	12,190
10	11,832	1,000	23,810
15	7,888	3,375	80,357

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 118,323 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.25 (dimensions) / p.26 (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
61936	FAG	Ball	180	250	33	131 kN	4.22
B71936-C-T-P4S	FAG	Precision / Angular Contact	180	250	33	163 kN	4.13
B71936-E-T-P4S	FAG	Precision / Angular Contact	180	250	33	156 kN	4.11

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
7936A5	NSK	Precision / Angular Contact	180	250	33	30,600 lbs	4.94
7936C	NSK	Precision / Angular Contact	180	250	33	32,600 lbs	4.899

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16036	NSK	Ball	180	280	31	159 kN	7.5
6036	NSK	Ball	180	280	46	40,600 lbs	10.433
6236	NSK	Ball	180	320	52	51,100 lbs	15.767
6336	NSK	Ball	180	380	75	79,600 lbs	44.452
6836	NSK	Ball	180	225	22	13,600 lbs	1.978
7236B	NSK	Ball	180	320	52	62,000 lbs	17.69
7336B	NSK	Ball	180	380	75	83,800 lbs	41.005

Request a quotation for 6936

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