Toroidal roller bearing C3988-K-M

Designation	Dimension	Remark
d	440.00 mm	shaft diameter
D	600.00 mm	outer diameter
B	118.00 mm	width
d₂	494.50 mm	Shoulder diameter of the inner ring
D₁	559.50 mm	Turn diameter on the outer ring
S₁	20.00 mm	Permissible axial displacement
D_{a max.}	545.00 mm	connection dimension
D_{a min.}	585.00 mm	connection dimension
d_{a max.}	455.00 mm	connection dimension
d_{a min.}	517.00 mm	connection dimension
r_a	3.00 mm	Rounding radius
C_a	1.40 mm	max. permissible axial displacement

Designation	Dimension	Remark
C_r	2,650,000 N	dynamic load rating, radial
C_0r	5,300,000 N	static load rating, radial
C_ur	490,000 N	fatigue limit load, radial
n_G	970 min^-1	limit speed
	92.300 kg	Weight

Designation	Dimension												Performance data
	d	D	B	d₂	D₁	S₁	S₂	D_{a max.}	D_{a min.}	d_{a max.}	d_{a min.}	r_a	C_a	C_r	C_0r	C_ur	n_G
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	N	N	N	N	min¹
C3972-K-M	360.00	480.00	90.00	393.40	450.60	17.20	-	437.00	467.00	373.00	408.00	2.50	2.10	1,770,000	3,250,000	360,000	1,280
C3976-K-M	380.00	520.00	106.00	427.90	489.10	21.00	-	474.00	505.00	395.00	444.00	3.00	2.20	2,130,000	4,000,000	405,000	1,150
C3980-K-M	400.00	540.00	106.00	439.40	500.60	21.00	-	485.00	525.00	415.00	456.00	3.00	2.20	2,170,000	4,150,000	415,000	1,120
C3984-K-M	420.00	560.00	106.00	457.40	518.60	21.30	-	503.00	545.00	435.00	474.00	3.00	2.20	2,200,000	4,250,000	425,000	1,070
C3988-K-M	440.00	600.00	118.00	494.50	559.50	20.00	-	545.00	585.00	455.00	517.00	3.00	1.40	2,650,000	5,300,000	490,000	970
C3992-K-M	460.00	620.00	118.00	509.00	574.00	20.00	-	561.00	605.00	467.00	504.00	3.00	1.40	2,750,000	5,600,000	510,000	940
C3996-K-M	480.00	650.00	128.00	525.40	607.60	20.40	-	588.00	632.00	498.00	555.00	4.00	3.10	3,300,000	6,200,000	610,000	880
C39/500-K-M	500.00	670.00	128.00	552.40	634.60	20.40	-	615.00	652.00	518.00	573.00	4.00	3.10	3,350,000	6,500,000	620,000	830
C39/530-K-M	530.00	710.00	136.00	577.00	658.00	28.40	-	639.00	692.00	548.00	606.00	4.00	2.90	3,550,000	7,100,000	670,000	790
C39/560-K-M	560.00	750.00	140.00	621.30	701.70	32.40	-	683.00	732.00	578.00	650.00	4.00	2.90	3,650,000	7,500,000	700,000	730
C39/600-K-M	600.00	800.00	150.00	664.70	745.30	32.40	-	726.00	782.00	618.00	685.00	4.00	1.70	4,100,000	8,800,000	790,000	680
C39/630-K-M	630.00	850.00	165.00	693.20	790.80	35.50	-	766.00	827.00	653.00	729.00	5.00	3.60	5,000,000	10,100,000	890,000	630
C39/670-K-M	670.00	900.00	170.00	756.20	852.80	24.90	-	833.00	877.00	693.00	749.00	5.00	2.10	5,700,000	12,300,000	1,020,000	570
C39/710-K-M	710.00	950.00	180.00	772.60	877.40	30.70	-	849.00	927.00	733.00	802.00	5.00	6.50	6,100,000	12,900,000	1,040,000	550
C39/750-K-M	750.00	1,000.00	185.00	829.50	933.50	35.70	-	906.00	977.00	773.00	869.00	5.00	3.80	6,400,000	14,000,000	1,120,000	510
C39/800-K-M	800.00	1,060.00	195.00	888.40	990.60	45.70	-	970.00	1,037.00	823.00	879.00	5.00	3.60	6,600,000	14,800,000	1,160,000	475
C39/850-K-M	850.00	1,120.00	200.00	936.10	1,056.90	35.90	-	1,027.00	1,097.00	873.00	981.00	5.00	4.50	7,800,000	17,000,000	1,390,000	440
C39/900-K-M	900.00	1,180.00	206.00	987.40	1,114.60	20.00	-	1,087.00	1,157.00	923.00	981.00	5.00	3.00	9,000,000	20,300,000	1,570,000	410

Designation	Dimension												Performance data
	d	D	B	d₂	D₁	S₁	S₂	D_{a max.}	D_{a min.}	d_{a max.}	d_{a min.}	r_a	C_a	C_r	C_0r	C_ur	n_G
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	N	N	N	N	min¹
C3988-M	440.00	600.00	118.00	494.50	559.50	20.00	-	545.00	585.00	455.00	517.00	3.00	1.40	2,650,000	5,300,000	490,000	970
C3988-K-M	440.00	600.00	118.00	494.50	559.50	20.00	-	545.00	585.00	455.00	517.00	3.00	1.40	2,650,000	5,300,000	490,000	970

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Name	Brand	Webshop	Notice
C3988-K-M	HFH		Premium quality, house brand

Properties	Suffix	Description
Cage design	M	one-piece brass cage
Bore geometry	K	conical (Cone ratio 1:12)

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