61903zz Robot Joint Bearing for Packaging and Textile Machinery

• Customization: Available
• Certification: IATF 16949
• Product Name: Deep Groove Ball Bearing
• Model NO.: 61903 ZZ
• Model No.: 61903 Zz
• Precision Class: DIN P0( ABEC-1) P6(ABEC-3) P5(ABEC-5) P4(ABEC-7)
• Related Standards: ISO 492, 582 and 1132
• Material: AISI 52100/ 100cr6 /Gcr15
• Cage: PA66/ SPCC
• Ball: AISI 52100/ 100cr6 /Gcr15
• Seal Type: Open Zz 2RS or as Require
• Noisel Level: Z1 Z2 Z3
• Vibration Level: V1 V2 V3
• Feature: High Precison and Low Nosie
• Application: Elect/ Motorcycle/ Automobile/ Industrial Mechanic
• Lubrication: Grease or Oil
• Transport Package: Standard Packaging or Customized
• Specification: Standard Specifications or Customized
• Trademark: YW
• Origin: Jiangsu, Wuxi, China
• HS Code: 8482102000
• Production Capacity: 100000 PCS/ Months

Product Description

Product Description

YW Bearing Factory 61903 Series Deep Groove Ball Bearings

 

Discover precision engineering with YW Bearing Factory's 61903 series deep groove ball bearings, designed for compact, high-speed applications. Measuring 17mm×30mm×7mm, this thin-section bearing excels in space-constrained environments with exceptional reliability.
 

Featuring optimized internal geometry, our 61903 bearings minimize friction and vibration, supporting reference speeds up to 24,000 r/min (grease lubrication) and limit speeds of 28,000 r/min. They handle both radial and bidirectional axial loads effectively, with a dynamic load rating of 4.35 kN and static rating of 2.55 kN.
 

Available in open-type, 61903-2Z (steel shields), and 61903-2RS (rubber seals) configurations, these bearings are manufactured from premium bearing steel with precision heat treatment for superior hardness and wear resistance.
 

Perfect for industrial robots, high-speed spindles, precision instruments, electric motors, and medical equipment. YW Bearing Factory offers P0-P5 precision grades, customizable radial clearance, and full OEM/ODM support with competitive pricing and stable supply.

 

Product Parameters

TECHNICAL PARAMETERS
Bearing Model	61903
Type	Single Row Deep Groove Ball Bearing
Material	Chrome Steel (GCr15 / 100Cr6)
Bore Diameter (d)	17 mm
Outer Diameter (D)	30 mm
Width (B)	7 mm
Precision	P0 (Normal) P6 P5 P4 (Optional)
Clearance	C0 (Normal) C2 C3 C4 (Optional for high heat/ speed)
Vibration	V1 V2 V3
Noise	Z1 Z2 Z3
Availiable Seals	Open / ZZ (Metal Shields) / 2RS (Rubber Seals)
Dynamic Load Rating C	2240 N
Static Load Rating C0	1460 N
Limiting Speed (Grease Lubrication)	24000 rpm
Limiting Speed (Oil Lubrication)	28000 rpm
Appliaction	Electric Motors, Gearboxes, Automotive Accessories (Fans, Alternators), Precision Instruments, Agricultural Machinery.

Model	Bore Diameter  (d)	Outer Diameter  (D)	Width (B)	rsmin (mm)	Cr (kN)	Cor (kN)	Limit Speed -Oil (rpm)	Limit Speed-Grease (rpm)	Weight (kg)
61900	10	22	6	0.3	2.7	1.27	33,000	38,000	0.009
61901	12	24	6	0.3	2.89	1.46	30,000	36,000	0.01
61902	15	28	7	0.3	4.35	2.26	26,000	36,000	0.017
61903	17	30	7	0.3	4.6	2.55	24,000	28,000	0.017
61904	20	37	9	0.3	6.4	3.7	19,000	22,000	0.037
61905	25	47	9	0.3	7.05	4.55	16,000	19,000	0.042
61906	30	47	9	0.3	7.25	5	14,000	17,000	0.052
61907	35	62	10	0.3	10.6	7.25	11,000	15,000	0.075
61908	40	62	12	0.3	13.7	10	11,000	13,000	0.112
61909	45	68	12	0.6	14.1	10.9	9,500	11,000	0.126
61910	50	72	12	0.6	14.5	11.7	9,000	11,000	0.135
61911	55	80	13	1	16	13.3	8,000	9,500	0.189
61912	60	85	13	1	19.4	16.3	7,500	9,000	0.192
61913	65	90	13	1	17.4	16.1	7,100	8,500	0.218
61914	70	100	16	1	23.7	21.2	6,300	7,500	0.349
61915	75	105	16	1	24.4	22.6	6,000	7,100	0.364
61916	80	110	16	1	25	24	5,600	6,700	0.391
61917	85	120	18	1.1	32	29.6	5,300	6,300	0.55
61918	90	125	18	1.1	33	31.5	5,000	6,000	0.585
61919	95	130	18	1.1	33.5	33.5	4,800	5,600	0.601
61920	100	140	20	1.1	43	42	4,500	5,300	0.828
61922	110	150	20	1.1	43.5	44.5	4,300	5,000	0.893
61924	120	165	22	1.1	53	54	3,800	4,500	1.21
61926	130	180	24	1.5	65	67.5	3,400	4,000	1.57
61928	140	190	24	1.5	66.5	72	3,200	3,800	1.67
61930	150	210	28	2	85	90.5	2,600	3,200	3.01
61932	160	220	28	2	87	96	2,600	3,000	2.71
61934	170	230	28	2	86	97	2,400	2,800	3.34
61936	180	250	33	2	119	128	2,200	2,600	4.16
61938	190	260	33	2	113	127	2,200	2,600	5.18
61940	200	280	38	2.1	143	158	2,000	2,400	7.28
61944	220	300	38	2.1	146	169	1,800	2,200	7.88
61948	240	320	38	2.1	154	190	1,700	2,000	8.49
61952	260	360	46	2.1	204	255	1,500	1,800	14
61956	280	380	46	2.1	209	272	1,400	1,700	15.1

 

Detailed Photos

WIDE SIZE RANGE

Comprehensive product portfolio from miniature bearings to large-sized units, accommodating diverse application requirements

LOW FRICTION & ENERGY EFFICIENCY

Precision-engineered raceways and ball complement reduce friction, minimizing energy consumption and heat generation

VERSATILE MOUNTING OPTIONS

Available with various sealing configurations (open, shielded, sealed) to suit different operating environments

OEM CUSTOMIZATION AVAILABLE

Tailored solutions to meet specific dimensional, material, and performance requirements

FAQ

Q1: Are you a factory or a trader?
A: We are a manufacturer integrating industry and trade. Welcome to visit our company.

Q2: Can I add my LOGO to the product?
A: We support on-demand customization, including LOGO customization, color customization, appearance size customization, etc.

Q3: What payment methods do you support?
A: We support T/T, Western Union, PayPal, cash, etc. The details can be negotiated.

Q4: What are your modes of transportation?
A: We usually choose the appropriate mode of transportation (sea, air, land) according to the conditions of the goods, or we can choose the mode of transportation according to your requirements.

Q5: How can I get an accurate quotation?
A: You can first send your specific demand information and product pictures, and we will customize a solution for you according to your needs and inform you of the specific price.