Double Row Spherical Roller Bearing

Double-row spherical roller bearings are rolling bearings designed to withstand high axial and radial loads. The center points of the inner and outer rings' inner diameter spherical tracks are not on the same vertical plane as the center point of the bearing, which enables the bearing to automatically align when subjected to axial and radial loads, that is, to adjust the position of the inner and outer rings relative to the center of the bearing. The rolling elements are double-row cylindrical or conical rollers, which effectively share and distribute the load by rolling on the spherical tracks of the inner and outer rings. Common double-row spherical roller bearings are usually equipped with seals or dust covers to prevent external contaminants from entering the bearing and protect the rolling contact surface and grease.

Part Number	Bore Dia	Outer Dia	Width	Ring Material	Cage Material	Dynamic Radial Load	Static Radial Load	Weight
21305 CC	25 mm	62 mm	17 mm	52100 Chrome Steel	Steel	11038 lbf	933 lbf	0.27 kg
21306 CC	30 mm	72 mm	19 mm	52100 Chrome Steel	Steel	1477 lbf	13713 lbf	0.41 kg
21307 CC	35 mm	80 mm	21 mm	52100 Chrome Steel	Steel	17805 lbf	16186 lbf	0.54 kg
21308 E	40 mm	90 mm	23 mm	52100 Chrome Steel	Steel	24055 lbf	24279 lbf	0.74 kg
21308 EK	40 mm	90 mm	23 mm	52100 Chrome Steel	Steel	24055 lbf	24279 lbf	0.74 kg
21309 E	45 mm	100 mm	25 mm	52100 Chrome Steel	Steel	29 lbf	28551 lbf	0.98 kg
21309 EK	45 mm	100 mm	25 mm	52100 Chrome Steel	Steel	29 lbf	28551 lbf	0.97 kg
21310 E	50 mm	110 mm	27 mm	52100 Chrome Steel	Steel	35745 lbf	37318 lbf	1.3 kg
21310 EK	50 mm	110 mm	27 mm	52100 Chrome Steel	Steel	35745 lbf	37318 lbf	1.3 kg
21311 E	55 mm	120 mm	29 mm	52100 Chrome Steel	Steel	35745 lbf	37318 lbf	1.7 kg
21311 EK	55 mm	120 mm	29 mm	52100 Chrome Steel	Steel	35745 lbf	37318 lbf	1.65 kg
21312 E	60 mm	130 mm	31 mm	52100 Chrome Steel	Steel	48784 lbf	53954 lbf	2.05 kg
21312 EK	60 mm	130 mm	31 mm	52100 Chrome Steel	Steel	48784 lbf	53954 lbf	2.05 kg
21313 E	65 mm	140 mm	33 mm	52100 Chrome Steel	Steel	54629 lbf	60698 lbf	2.55 kg
21313 EK	65 mm	140 mm	33 mm	52100 Chrome Steel	Steel	54629 lbf	60698 lbf	2.5 kg
21314 E	70 mm	150 mm	35 mm	52100 Chrome Steel	Steel	65419 lbf	73063 lbf	3.15 kg
21314 EK	70 mm	150 mm	35 mm	52100 Chrome Steel	Steel	65419 lbf	73063 lbf	3.1 kg
21315 E	75 mm	160 mm	37 mm	52100 Chrome Steel	Steel	65419 lbf	73063 lbf	3.8 kg
21315 EK	75 mm	160 mm	37 mm	52100 Chrome Steel	Steel	65419 lbf	73063 lbf	3.75 kg
21316 E	80 mm	170 mm	39 mm	52100 Chrome Steel	Steel	74412 lbf	84303 lbf	4.55 kg
21316 EK	80 mm	170 mm	39 mm	52100 Chrome Steel	Steel	74412 lbf	84303 lbf	4.5 kg
21317 E	85 mm	180 mm	41 mm	52100 Chrome Steel	Steel	74412 lbf	84303 lbf	5.35 kg
21317 EK	85 mm	180 mm	41 mm	52100 Chrome Steel	Steel	74412 lbf	84303 lbf	5.3 kg
21318 E	90 mm	190 mm	43 mm	52100 Chrome Steel	Steel	8835 lbf	101164 lbf	6.25 kg
21318 EK	90 mm	190 mm	43 mm	52100 Chrome Steel	Steel	8835 lbf	101164 lbf	6.2 kg
21319 E	95 mm	200 mm	45 mm	52100 Chrome Steel	Steel	97342 lbf	110156 lbf	7.2 kg
21319 EK	95 mm	200 mm	45 mm	52100 Chrome Steel	Steel	97342 lbf	110156 lbf	7.15 kg
21320 E	100 mm	215 mm	47 mm	52100 Chrome Steel	Steel	97342 lbf	110156 lbf	8.95 kg
21320 EK	100 mm	215 mm	47 mm	52100 Chrome Steel	Steel	97342 lbf	110156 lbf	8.85 kg
22205 E	25 mm	52 mm	18 mm	52100 Chrome Steel	Steel	11218 lbf	9892 lbf	0.18 kg
22205 EK	25 mm	52 mm	18 mm	52100 Chrome Steel	Steel	11218 lbf	9892 lbf	0.17 kg
22205/20 E	20 mm	52 mm	18 mm	52100 Chrome Steel	Steel	11218 lbf	9892 lbf	0.28 kg
22206 E	30 mm	62 mm	20 mm	52100 Chrome Steel	Steel	1486 lbf	13489 lbf	0.28 kg
22206 EK	30 mm	62 mm	20 mm	52100 Chrome Steel	Steel	1486 lbf	13489 lbf	0.28 kg
22207 E	35 mm	72 mm	23 mm	52100 Chrome Steel	Steel	19963 lbf	19109 lbf	0.44 kg
22207 EK	35 mm	72 mm	23 mm	52100 Chrome Steel	Steel	19963 lbf	19109 lbf	0.43 kg
22208 E	40 mm	80 mm	23 mm	52100 Chrome Steel	Steel	22144 lbf	20233 lbf	0.53 kg
22208 EK	40 mm	80 mm	23 mm	52100 Chrome Steel	Steel	22144 lbf	20233 lbf	0.52 kg
22209 E	45 mm	85 mm	23 mm	52100 Chrome Steel	Steel	2338 lbf	22031 lbf	0.57 kg
22209 EK	45 mm	85 mm	23 mm	52100 Chrome Steel	Steel	2338 lbf	22031 lbf	0.56 kg
22210 E	50 mm	90 mm	23 mm	52100 Chrome Steel	Steel	24055 lbf	24279 lbf	0.62 kg
22210 EK	50 mm	90 mm	23 mm	52100 Chrome Steel	Steel	24055 lbf	24279 lbf	0.61 kg
22211 E	55 mm	100 mm	25 mm	52100 Chrome Steel	Steel	29 lbf	28551 lbf	0.83 kg
22211 EK	55 mm	100 mm	25 mm	52100 Chrome Steel	Steel	29 lbf	28551 lbf	0.81 kg
22212 E	60 mm	110 mm	28 mm	52100 Chrome Steel	Steel	35745 lbf	37318 lbf	1.15 kg
22212 EK	60 mm	110 mm	28 mm	52100 Chrome Steel	Steel	35745 lbf	37318 lbf	1.15 kg
22213 E	65 mm	120 mm	31 mm	52100 Chrome Steel	Steel	44512 lbf	48559 lbf	1.55 kg
22213 EK	65 mm	120 mm	31 mm	52100 Chrome Steel	Steel	44512 lbf	48559 lbf	1.5 kg
22214 E	70 mm	125 mm	31 mm	52100 Chrome Steel	Steel	47884 lbf	51256 lbf	1.6 kg
22214 EK	70 mm	125 mm	31 mm	52100 Chrome Steel	Steel	47884 lbf	51256 lbf	1.6 kg
22215 E	75 mm	130 mm	31 mm	52100 Chrome Steel	Steel	48784 lbf	53954 lbf	1.7 kg
22215 EK	75 mm	130 mm	31 mm	52100 Chrome Steel	Steel	48784 lbf	53954 lbf	1.65 kg
22216 E	80 mm	140 mm	33 mm	52100 Chrome Steel	Steel	54629 lbf	60698 lbf	2.1 kg
22216 EK	80 mm	140 mm	33 mm	52100 Chrome Steel	Steel	54629 lbf	60698 lbf	2.05 kg
22217 E	85 mm	150 mm	36 mm	52100 Chrome Steel	Steel	65419 lbf	73063 lbf	2.7 kg
22217 EK	85 mm	150 mm	36 mm	52100 Chrome Steel	Steel	65419 lbf	73063 lbf	2.65 kg
22218 E	90 mm	160 mm	40 mm	52100 Chrome Steel	Steel	74412 lbf	84303 lbf	3.4 kg
22218 EK	90 mm	160 mm	40 mm	52100 Chrome Steel	Steel	74412 lbf	84303 lbf	3.35 kg
22219 E	95 mm	170 mm	43 mm	52100 Chrome Steel	Steel	8835 lbf	101164 lbf	4.15 kg
22219 EK	95 mm	170 mm	43 mm	52100 Chrome Steel	Steel	8835 lbf	101164 lbf	4.1 kg
22220 E	100 mm	180 mm	46 mm	52100 Chrome Steel	Steel	97342 lbf	110156 lbf	4.95 kg
22220 EK	100 mm	180 mm	46 mm	52100 Chrome Steel	Steel	97342 lbf	110156 lbf	4.85 kg
22222 E	110 mm	200 mm	53 mm	52100 Chrome Steel	Steel	128591 lbf	143878 lbf	7.05 kg
22222 EK	110 mm	200 mm	53 mm	52100 Chrome Steel	Steel	128591 lbf	143878 lbf	6.9 kg
22224 E	120 mm	215 mm	58 mm	52100 Chrome Steel	Steel	146575 lbf	171979 lbf	8.95 kg
22224 EK	120 mm	215 mm	58 mm	52100 Chrome Steel	Steel	146575 lbf	171979 lbf	8.75 kg
22226 E	130 mm	230 mm	64 mm	52100 Chrome Steel	Steel	170405 lbf	209072 lbf	11.5 kg
22226 EK	130 mm	230 mm	64 mm	52100 Chrome Steel	Steel	170405 lbf	209072 lbf	11 kg
22228 CC/W33	140 mm	250 mm	68 mm	52100 Chrome Steel	Steel	167033 lbf	202328 lbf	14 kg
22228 CCK/W33	140 mm	250 mm	68 mm	52100 Chrome Steel	Steel	167033 lbf	202328 lbf	14 kg
22228-2CS5/VT143	140 mm	250 mm	68 mm	52100 Chrome Steel	Steel	167258 lbf	202328 lbf	14 kg
22228-2CS5K/VT143	140 mm	250 mm	68 mm	52100 Chrome Steel	Steel	167258 lbf	202328 lbf	13.5 kg
22230 CC/W33	150 mm	270 mm	73 mm	52100 Chrome Steel	Steel	201878 lbf	242794 lbf	18 kg
22230 CCK/W33	150 mm	270 mm	73 mm	52100 Chrome Steel	Steel	201878 lbf	242794 lbf	17.5 kg
22230-2CS5/VT143	150 mm	270 mm	73 mm	52100 Chrome Steel	Steel	202103 lbf	242794 lbf	18 kg
22230-2CS5K/VT143	150 mm	270 mm	73 mm	52100 Chrome Steel	Steel	202103 lbf	242794 lbf	17.5 kg
22232 CC/W33	160 mm	290 mm	80 mm	52100 Chrome Steel	Steel	234476 lbf	290004 lbf	23 kg
22232 CCK/W33	160 mm	290 mm	80 mm	52100 Chrome Steel	Steel	234476 lbf	290004 lbf	22.5 kg
22232-2CS5/VT143	160 mm	290 mm	80 mm	52100 Chrome Steel	Steel	234701 lbf	290004 lbf	22.5 kg
22232-2CS5K/VT143	160 mm	290 mm	80 mm	52100 Chrome Steel	Steel	234701 lbf	290004 lbf	22 kg
22234 CC/W33	170 mm	310 mm	86 mm	52100 Chrome Steel	Steel	265949 lbf	328221 lbf	28 kg
22234 CCK/W33	170 mm	310 mm	86 mm	52100 Chrome Steel	Steel	265949 lbf	328221 lbf	27.5 kg
22234-2CS5/VT143	170 mm	310 mm	86 mm	52100 Chrome Steel	Steel	266399 lbf	328221 lbf	28.5 kg
22234-2CS5K/VT143	170 mm	310 mm	86 mm	52100 Chrome Steel	Steel	266399 lbf	328221 lbf	28 kg
22236 CC/W33	180 mm	320 mm	86 mm	52100 Chrome Steel	Steel	278089 lbf	350702 lbf	29.5 kg
22236 CCK/W33	180 mm	320 mm	86 mm	52100 Chrome Steel	Steel	278089 lbf	350702 lbf	29 kg
22236-2CS5/VT143	180 mm	320 mm	86 mm	52100 Chrome Steel	Steel	278538 lbf	350702 lbf	28.9 kg
22236-2CS5K/VT143	180 mm	320 mm	86 mm	52100 Chrome Steel	Steel	278538 lbf	350702 lbf	28.4 kg
22238 CC/W33	190 mm	340 mm	92 mm	52100 Chrome Steel	Steel	301694 lbf	382175 lbf	35.5 kg
22238 CCK/W33	190 mm	340 mm	92 mm	52100 Chrome Steel	Steel	301694 lbf	382175 lbf	35 kg
22238-2CS5/VT143	190 mm	340 mm	92 mm	52100 Chrome Steel	Steel	302368 lbf	382175 lbf	34.9 kg
22238-2CS5K/VT143	190 mm	340 mm	92 mm	52100 Chrome Steel	Steel	302368 lbf	382175 lbf	33.9 kg
22240 CC/W33	200 mm	360 mm	98 mm	52100 Chrome Steel	Steel	343058 lbf	433881 lbf	43 kg
22240 CCK/W33	200 mm	360 mm	98 mm	52100 Chrome Steel	Steel	343058 lbf	433881 lbf	42 kg
22240-2CS5/VT143	200 mm	360 mm	98 mm	52100 Chrome Steel	Steel	343733 lbf	433881 lbf	42.1 kg
22240-2CS5K/VT143	200 mm	360 mm	98 mm	52100 Chrome Steel	Steel	343733 lbf	433881 lbf	41.1 kg
22244 CC/W33	220 mm	400 mm	108 mm	52100 Chrome Steel	Steel	412524 lbf	530549 lbf	59 kg
22244 CCK/W33	220 mm	400 mm	108 mm	52100 Chrome Steel	Steel	412524 lbf	530549 lbf	58 kg
22244-2CS5/VT143	220 mm	400 mm	108 mm	52100 Chrome Steel	Steel	413424 lbf	530549 lbf	58.2 kg
22244-2CS5K/VT143	220 mm	400 mm	108 mm	52100 Chrome Steel	Steel	413424 lbf	530549 lbf	56.7 kg

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Materials

Inner and outer rings are generally made of high-strength bearing steel or special steel materials, such as alloy steel (for example, GCr15) to ensure good hardness, wear resistance and load-bearing capacity. Rolling elements (cylindrical rollers or tapered rollers) also use similar high-strength bearing steel or special alloy steel to meet high load and long life requirements.

Seals

Seals are usually made of rubber or synthetic rubber materials to prevent external contaminants from entering the bearing and maintain the effectiveness of grease. Grease selection should be optimized according to bearing operating conditions (such as temperature, speed, load) to ensure good lubrication and bearing life.

Cages

Double-row spherical roller bearing cage designs are generally of two main types:

Steel cages: Steel cages have high strength and rigidity and are suitable for industrial applications with high loads and high speeds. They are usually formed by cold stamping or machining to ensure precise size and geometry.

Copper cages: Brass has good thermal conductivity and can effectively help dissipate heat from the bearing, which helps to improve the operating efficiency and life of the bearing. Brass has good corrosion resistance and can provide good protection in certain corrosive working environments. It is easy to process and form, suitable for some special shapes and complex structures of cage design requirements.

Plastic cage: Plastic cages have good wear resistance and self-lubrication, which can reduce noise and vibration in some cases. Their common manufacturing processes include injection molding or die casting to meet the requirements of complex bearing design.

Manufacturing process

Select high-quality alloy steel or special steel materials that meet the requirements of bearing standards, and perform appropriate pretreatment such as heat treatment and surface treatment to enhance the hardness and wear resistance of the material.

Outer and inner ring processing: The processing of the outer and inner rings usually includes processes such as turning, grinding and heat treatment to ensure the flatness and accuracy of the rolling contact surface.

Rolling element manufacturing: The manufacturing of rolling elements (cylindrical rollers or tapered rollers) includes processes such as hot forging or cold heading to form rollers with precise dimensions and surface quality.

Cage processing and assembly: Cage processing is usually machined or injection molded to ensure that the rollers are properly separated and positioned.

The inner and outer rings, rolling elements and cages are assembled into a complete bearing unit and subjected to final quality inspection and lubrication. Through precise material selection, advanced manufacturing processes and strict quality control, double row spherical roller bearings can provide stable and reliable performance and undertake important load-bearing tasks in various industrial applications.

Double Row Spherical Roller Bearing

Materials

Seals

Cages

Manufacturing process

Bearing Catalogue