Needle roller bearing-FGFA bearings

Needle roller bearing

Needle roller bearings are compact transmission components utilising slender needle rollers as rolling elements. Their core advantages lie in their small size and high radial load capacity – within equivalent installation space, they far exceed the load-bearing capacity of standard ball bearings while offering a compact structure that significantly reduces equipment footprint. Suitable for medium-to-low speed applications, they exhibit impact resistance, stable transmission efficiency, and facilitate straightforward installation and maintenance.

Designation	Principal dimensions	Basic load ratings	Speed ratings
HK 3026	30	37	26	27	54	8000	9000
HK 3038	30	37	38	35.8	80	8000	9000
HK 3224	32	39	24	26.4	54	7500	8500
BK 3520	35	42	20	22.9	46.5	7000	8000
HK 3512	35	42	12	12.5	21.6	7000	8000
HK 3516	35	42	16	17.9	34	7000	8000
HK 3516.2RS	35	42	16	12.5	21.6	——	5000
HK 3518 RS	35	42	18	17.9	34	——	5000
HK 3520	35	42	20	22.9	46.5	7000	8000
HK 3520.2RS	35	42	20	17.9	34	——	5000
BK 4020	40	47	20	24.2	53	6300	7000
HK 4012	40	47	12	13.4	24.5	6300	7000
HK 4016	40	47	16	19	39	6300	7000
HK 4016.2RS	40	47	16	14.5	27.5	——	4500
HK 4018 RS	40	47	18	19	39	——	4500
HK 4020	40	47	20	24.2	53	6300	7000
HK 4020.2RS	40	47	20	19	39	——	4500
BK 4520	45	52	20	26	60	5600	6300
HK 4512	45	52	12	14.2	27.5	5600	6300
HK 4516	45	52	16	20.5	43	5600	6300
HK 4518 RS	45	52	18	20.5	43	——	4000
HK 4520	45	52	20	26	60	5600	6300
HK 4520.2RS	45	52	20	20.5	43	——	4000
HK 5020	50	58	20	29.2	63	5000	5600
HK 5022 RS	50	58	22	29.2	63	——	3600

Designation

Principal dimensions

Basic load ratings

Speed ratings

dynamic

static

Reference speed

Limiting speed

F_w[mm]

E_w[mm]

U[mm]

C[kN]

C₀[kN]

[r/min]

Wafangdian Fafuge Bearing Co., Ltd., rooted in Wafangdian Bearing Industry Base, is an emerging professional bearing manufacturer. Drawing on the base’s profound industrial heritage, we have upheld craftsmanship since inception, integrated precision manufacturing into R&D and production, and focused on the R&D and refined production of spherical roller bearings.

Needle roller bearing