51106NSKThrust

Name: NSK 51106 Thrust Bearing
Brand: NSK
SKU: 51106

51106 is a NSK thrust bearing, bore 30 mm, O.D. 47 mm, height 11 mm, dynamic rating 4,630 lbs. Dimensions, drawing, interchanges and price.

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Bore d30mm

Outside dia. D47mm

Overall width T11mm

Dynamic Cr4,630lbs

Static C0r9,480lbs

Limiting speed4,300rpm

Weight0.064kg

Cr / C0r0.49

Mean dia. dm38.5mm

Original catalogue drawing - NSK catalogue, page 143

51106 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	30	1.1811
D	Outside diameter	47	1.8504
T	Overall assembly width	11	0.4331

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)	30
Bore d (in)	1.1811
Outside dia. D (mm)	47
Outside dia. D (in)	1.8504
Overall width T (mm)	11
Overall width T (in)	0.4331

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)	4630
Basic static axial rating Coa (lbs)	9480
Limiting speed - grease (rpm)	4,300
Limiting speed - oil (rpm)	6,700

Weight

Weight (kg)	0.064

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.024
Shaft shoulder da min (in)	1.576
Housing shoulder Da (in)	1.458

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,400 rpm
4	5,149	102	1,209
6	3,433	392	4,673
8	2,574	1,024	12,190
10	2,060	2,154	25,648
15	1,373	8,323	99,089

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 20,595 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.145 (dimensions) / p.146 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
51206	NSK	Thrust	30	52	16	6,610 lbs	0.137
51306	NSK	Thrust	30	60	21	9,700 lbs	0.267
51406	NSK	Thrust	30	70	28	16,400 lbs	0.519
52206	NSK	Thrust	30	52	None	29.5 kN	0.288
52306	NSK	Thrust	30	60	None	43 kN	0.511
51105	NSK	Thrust	25	42	11	4,430 lbs	0.056
51205	NSK	Thrust	25	47	15	6,300 lbs	0.111
51305	NSK	Thrust	25	52	18	8,040 lbs	0.169

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