Drawn cup needle roller bearing closed BK4020-AS1

Designation	Dimension	Remark
F_w	40.00 mm	enveloping circle
D	47.00 mm	Outer diameter
C	20.00 mm	Width
r_min	0.80 mm	min. edge distance

Designation	Dimension	Remark
C_r	25,500 N	dynamic load rating, radial
C_0r	52,000 N	static load rating, radial
C_ur	6,800 N	fatigue limit load, radial
n_B	4,900 min^-1	reference speed
n_G	6,600 min^-1	limit speed
	0.620 kg	Weight

Designation	Dimension						Performance data
	F_W	D	C₁	C	C_t	r_min	C_r	C_0r	C_ur	n_G	n_B
	mm	mm	mm	mm	mm	mm	N	N	N	min^-1	min^-1
BK0609-AS1	6.00	10.00	-	9.00	7.40	0.40	2,850	2,600	310	36,500	30,500
BK0709-AS1	7.00	11.00	-	9.00	7.40	0.40	3,100	2,950	355	33,000	26,500
BK0810-AS1	8.00	12.00	-	10.00	8.40	0.40	3,800	3,950	500	29,500	23,200
BK0808-AS1	8.00	12.00	-	8.00	6.40	0.40	2,750	2,600	290	29,500	23,800
BK0910-AS1	9.00	13.00	-	10.00	8.40	0.40	4,250	4,650	600	26,500	20,600
BK0912-AS1	9.00	13.00	-	12.00	10.40	0.40	5,300	6,300	860	26,500	20,200
BK1010-AS1	10.00	14.00	-	10.00	8.40	0.40	4,400	5,100	650	24,300	18,700
BK1012-AS1	10.00	14.00	-	12.00	10.40	0.40	5,500	6,800	930	24,300	18,400
BK1015-AS1	10.00	14.00	-	15.00	13.40	0.40	6,800	8,800	1,210	24,300	18,200
BK1210-AS1	12.00	16.00	-	10.00	8.40	0.40	4,950	6,200	800	20,700	15,700
BK1212-AS1	12.00	18.00	-	12.00	9.30	0.80	6,500	7,300	860	20,000	15,500
BK1312-AS1	13.00	19.00	-	12.00	9.30	0.80	6,800	7,900	940	18,700	14,400
BK1412-AS1	14.00	20.00	-	12.00	9.30	0.80	7,100	8,500	1,010	17,500	13,500
BK1512-AS1	15.00	21.00	-	12.00	9.30	0.80	7,900	9,400	1,150	16,300	12,300
BK1516-AS1	15.00	21.00	-	16.00	13.30	0.80	10,500	14,400	1,780	16,500	12,300
BK1612-AS1	16.00	22.00	-	12.00	9.30	0.80	7,600	9,700	1,160	15,600	11,900
BK1616-AS1	16.00	22.00	-	16.00	13.30	0.80	10,900	15,300	1,900	15,600	11,600
BK1622-ZW-AS1	16.00	22.00	-	22.00	19.30	0.80	13,100	19,400	2,310	15,600	11,700
BK1812-AS1	18.00	24.00	-	12.00	9.30	0.80	8,100	10,900	1,300	14,000	10,700
BK1816-AS1	18.00	24.00	-	16.00	13.30	0.80	11,600	17,300	2,140	14,000	10,400
BK2016-AS1	20.00	26.00	-	16.00	13.30	0.80	12,700	20,100	2,500	12,700	9,300
BK2020-AS1	20.00	26.00	-	20.00	17.30	0.80	15,700	26,000	3,500	12,700	9,300
BK2212-AS1	22.00	28.00	-	12.00	9.30	0.80	9,100	13,400	1,600	11,700	8,900
BK2216-AS1	22.00	28.00	-	16.00	13.30	0.80	13,400	22,100	2,800	11,700	8,500
BK2516-AS1	25.00	32.00	-	16.00	13.30	0.80	15,600	24,000	3,150	10,200	7,500
BK2520-AS1	25.00	32.00	-	20.00	17.30	0.80	19,900	33,000	4,200	10,200	7,400
BK2526-AS1	25.00	32.00	-	26.00	23.30	0.80	25,500	45,000	6,200	10,200	7,300
BK2538-ZW-AS1	25.00	32.00	-	38.00	35.30	0.80	34,000	66,000	8,400	10,200	7,300
BK3012-AS1	30.00	37.00	-	12.00	9.30	0.80	12,100	18,200	2,390	8,600	6,600
BK3038-ZW-AS1	30.00	37.00	-	38.00	35.30	0.80	37,500	79,000	10,100	8,600	6,200
BK3026-AS1	30.00	37.00	-	26.00	23.30	0.80	28,000	54,000	7,400	8,600	6,200
BK3020-AS1	30.00	37.00	-	20.00	17.30	0.80	22,000	39,500	5,100	8,600	6,300
BK3016-AS1	30.00	37.00	-	16.00	13.30	0.80	17,200	29,000	3,750	8,600	6,400
BK3520-AS1	35.00	42.00	-	20.00	17.30	0.80	23,800	46,000	5,900	7,500	5,500
BK4020-AS1	40.00	47.00	-	20.00	17.30	0.80	25,500	52,000	6,800	6,600	4,900
BK4520-AS1	45.00	52.00	-	20.00	17.30	0.80	27,000	59,000	7,600	5,900	4,450
BK5025-AS1	50.00	58.00	-	25.00	22.30	0.80	38,500	84,000	11,700	5,300	4,000

Designation	Dimension						Performance data
	F_W	D	C₁	C	C_t	r_min	C_r	C_0r	C_ur	n_G	n_B
	mm	mm	mm	mm	mm	mm	N	N	N	min^-1	min^-1
BK4020	40.00	47.00	-	20.00	17.30	0.80	25,500	52,000	6,800	6,600	4,900
BK4020-AS1	40.00	47.00	-	20.00	17.30	0.80	25,500	52,000	6,800	6,600	4,900

Type	Designation	Brand	Full designation
IR35X40X20	Inner ring	HFH	BK4020-AS1 + IR35X40X20
LR35X40X20,5	Inner ring	HFH	BK4020-AS1 + LR35X40X20,5

Name	Brand	Webshop	Notice
BK4020-AS1	HFH		Premium quality, house brand

Properties	Suffix	Description
Lubricatable	AS1	Lubrication hole outside

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Drawn cup needle roller bearing closed

BKRS

Drawn cup needle roller bearing closed

BKAS1

Drawn cup needle roller bearing closed

BKRSAS1

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Drawn cup needle roller bearing closed BK4020-AS1