51220NSKThrust

Name: NSK 51220 Thrust Bearing
Brand: NSK
SKU: 51220

51220 is a NSK thrust bearing, bore 100 mm, O.D. 150 mm, height 38 mm, dynamic rating 30,200 lbs. Dimensions, drawing, interchanges and price.

Request a quote WhatsApp Email us Search the catalog

Bore d100mm

Outside dia. D150mm

Overall width T38mm

Dynamic Cr30,200lbs

Static C0r84,900lbs

Limiting speed1,300rpm

Weight2.25kg

Cr / C0r0.36

Mean dia. dm125mm

Original catalogue drawing - NSK catalogue, page 147

51220 NSK Thrust 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	100	3.937
D	Outside diameter	150	5.9055
T	Overall assembly width	38	1.4961

Notes

Thrust bearing ratings are axial values Ca / Coa; T is the overall height. 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)	100
Bore d (in)	3.9370
Outside dia. D (mm)	150
Outside dia. D (in)	5.9055
Overall width T (mm)	38
Overall width T (in)	1.4961

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	30200
Basic static axial rating Coa (lbs)	84900
Limiting speed - grease (rpm)	1,300
Limiting speed - oil (rpm)	2,000

Weight

Weight (kg)	2.25

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	5.122
Housing shoulder Da (in)	4.728

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 400 rpm
4	33,584	102	4,233
6	22,389	392	16,354
8	16,792	1,024	42,667
10	13,434	2,154	89,768
15	8,956	8,323	346,811

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 134,336 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.149 (dimensions) / p.150 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
29320	NSK	Thrust	100	170	42	410 kN	3.6
29320E	NSK	Thrust	100	170	42	92,000 lbs	3.606
29420	NSK	Thrust	100	210	67	840 kN	10.3
29420E	NSK	Thrust	100	210	67	189,000 lbs	10.297
51120	NSK	Thrust	100	135	25	19,300 lbs	0.962
51320	NSK	Thrust	100	170	55	53,600 lbs	4.98
51420X	NSK	Thrust	100	210	85	83,800 lbs	14.801
52220	NSK	Thrust	100	150	None	135 kN	4.54

Request a quotation for 51220

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