NKI Series

Description

NKI Series Machined Needle Roller Bearings are precision-engineered radial bearings with a machined steel outer ring, needle roller and cage assembly, and an integrated inner ring. They are designed for applications requiring high radial load capacity, compact dimensions, and reliable performance. The inner ring allows these bearings to be used on shafts that are not hardened or precision-ground, making installation easier and more versatile.

Features

Precision-machined, high-strength steel outer ring
Supplied with a hardened and precision-ground inner ring
High radial load-carrying capacity
Compact and space-saving design
Suitable for high-speed operation
Low friction for smooth and efficient performance
High rigidity and long service life
Available with lubrication grooves and lubrication holes on many sizes
Easy installation and maintenance

NKI Series Needle Roller Bearings

NKI Series Needle Roller Bearing Dimensions

Bearing No.	d (mm)	D (mm)	B (mm)	F (mm)	Approx. Weight (g)
NKI 10/16	10	22	16	13	24
NKI 12/16	12	24	16	15	28
NKI 15/16	15	27	16	18	33
NKI 17/16	17	30	16	20	40
NKI 20/16	20	32	16	23	46
NKI 20/20	20	32	20	23	55
NKI 25/20	25	38	20	28	72
NKI 25/30	25	38	30	28	102
NKI 30/20	30	45	20	35	107
NKI 30/30	30	45	30	35	160
NKI 35/20	35	50	20	40	128
NKI 35/30	35	50	30	40	190
NKI 40/20	40	55	20	45	155
NKI 40/30	40	55	30	45	225
NKI 45/25	45	62	25	50	230
NKI 45/35	45	62	35	50	320
NKI 50/25	50	68	25	55	270
NKI 50/35	50	68	35	55	365
NKI 55/25	55	72	25	60	300
NKI 55/35	55	72	35	60	380

Dimension Symbols

d = Bore Diameter
D = Outside Diameter
B = Bearing Width
F = Raceway Diameter of Inner Ring

NKI Series bearings are machined needle roller bearings supplied with an inner ring. They are suitable for shafts that are not hardened or ground and offer high radial load capacity, compact dimensions, and reliable performance in gearboxes, machine tools, textile machinery, agricultural equipment, and industrial transmissions.