6917NSKBall

Name: NSK 6917 Ball Bearing
Brand: NSK
SKU: 6917

6917 is a NSK ball bearing, bore 85 mm, O.D. 120 mm, width 18 mm, dynamic rating 7,150 lbs. Dimensions, drawing, interchanges and price.

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Bore d85mm

Outside dia. D120mm

Width B18mm

Dynamic Cr7,150lbs

Static C0r6,600lbs

Limiting speed5,300rpm

Weight0.54kg

Cr / C0r1.08

Mean dia. dm102.5mm

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	85	3.3465
D	Outside diameter	120	4.7244
B	Inner-ring / bearing width	18	0.7087
r	Chamfer (min)	0.991	0.039

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)	85
Bore d (in)	3.3465
Outside dia. D (mm)	120
Outside dia. D (in)	4.7244
Width B (mm)	18
Width B (in)	0.7087

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	7150
Basic static load rating Cor (lbs)	6600
Limiting speed - grease (rpm)	5,300
Limiting speed - oil (rpm)	6,300
Factor f0	16.4

Weight

Weight (kg)	0.54

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	3.602
Shaft shoulder da max (in)	3.720
Housing shoulder Da max (in)	4.469

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,700 rpm
4	7,951	64	627
6	5,301	216	2,118
8	3,976	512	5,020
10	3,180	1,000	9,804
15	2,120	3,375	33,088

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 31,805 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
61917	FAG	Ball	85	120	18	34 kN	0.557
B71917-C-T-P4S	FAG	Precision / Angular Contact	85	120	18	45 kN	0.526
B71917-E-T-P4S	FAG	Precision / Angular Contact	85	120	18	42.5 kN	0.524
HCB71917-C-T-P4S	FAG	Precision / Angular Contact	85	120	18	31 kN	0.53
HCB71917-E-T-P4S	FAG	Precision / Angular Contact	85	120	18	29 kN	0.53
HCS71917-C-T-P4S	FAG	Precision / Angular Contact	85	120	18	15 kN	0.512
HCS71917-E-T-P4S	FAG	Precision / Angular Contact	85	120	18	14.3 kN	0.511
HSS71917-C-T-P4S	FAG	Precision / Angular Contact	85	120	18	22 kN	0.58
HSS71917-E-T-P4S	FAG	Precision / Angular Contact	85	120	18	20.4 kN	0.579

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
7917A5	NSK	Precision / Angular Contact	85	120	18	8,270 lbs	0.526
7917C	NSK	Precision / Angular Contact	85	120	18	8,710 lbs	0.522

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1217	NSK	Ball	85	150	28	54.5 kN	2.1
1317	NSK	Ball	85	180	41	108 kN	5.03
16017	NSK	Ball	85	130	14	36 kN	0.652
5217J	NSK	Ball	85	150	49.2	26,000 lbs	3.402
6017	NSK	Ball	85	130	22	11,100 lbs	0.889
6217	NSK	Ball	85	150	28	18,900 lbs	1.801
6317	NSK	Ball	85	180	41	29,800 lbs	4.25
6817	NSK	Ball	85	110	13	4,200 lbs	0.254

Request a quotation for 6917

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