61801-2RS/C3 Thin Wall Deep Groove Ball Bearing 12x21x5mm Double Rubber Sealed

61801-2RS/C3 is thin wall miniature single row deep groove ball bearing, dimension 12×21×5mm. Double 2RS rubber contact seals lock internal grease and block dust, moisture and debris. C3 enlarged radial clearance adapts to high temperature and high-speed expansion. Deep groove raceway bears bidirectional radial and light axial loads, widely used for micro motors, optical instruments, medical devices and small automation equipment.

Model: 61801-2RS/C3
d:12mm, D:21mm, B:5mm
Min fillet r:0.3mm
Dynamic load Cr:1.74kN, Static load C0r:0.915kN
Grease limiting speed:20000r/min
Net weight:0.006kg
Structure: Thin wall single row deep groove ball bearing, double rubber sealed
Cage: Stamped steel cage
Material: GCr15 bearing steel, HRC60-65
Clearance: C3 loose clearance
Precision: P0 standard, P6/P5 optional
Operating temp: -30℃ ~ 110℃
Dimension drawings and durability test reports available on request.

• Ultra-thin wall compact structure, saves installation space and reduces equipment weight
• Double 2RS rubber seals for dustproof, waterproof and long-term grease retention
• C3 loose clearance fits high-speed running and temperature expansion scenarios
• Low friction, low noise and stable high-speed rotation performance
• Supports radial and bidirectional light axial loads, easy mounting with low maintenance
• Standard metric miniature size, fully interchangeable with mainstream brand bearings
• Custom precision, special grease and laser marking services available

• Micro DC motors, small brushless drive motors
• Optical cameras, precision optical measuring instruments
• Portable medical inspection and miniature diagnostic equipment
• Small robot joints, miniature automation transmission components
• Household small appliances, precision office equipment

Fit OEM assembly and aftermarket replacement of compact precision light-load equipment.

25 years production experience of miniature thin wall deep groove ball bearings. Vacuum smelting GCr15 steel with complete quenching and tempering heat treatment for stable hardness. Full OEM & ODM customization for clearance, precision and special lubricant. Strict full-process inspection covers raw material hardness test, ultra-precision raceway grinding, ball sorting and noise aging test. 24-hour professional technical support for space matching, speed selection and maintenance lubrication plans. Factory direct bulk price, stable small-package spot inventory for global precision equipment buyers.

1. Raw material chemical composition and hardness inspection
2. Integral quenching and stress relief tempering to eliminate internal stress
3. CNC ultra-precision inner and outer ring raceway mirror grinding
4. High-precision steel ball screening and stamped steel cage forming
5. Dust-free assembly with food-grade / high-temperature grease filling options
6. Low-noise aging and high-speed durability performance testing
7. Final full dimension inspection, anti-rust oil coating, neutral moisture-proof small carton packaging

Each batch passes noise and rotation smoothness test to guarantee stable operation in clean precision working environments.

Send inquiries for 61801-2RS/C3 miniature thin wall bearings used on micro motors, optical instruments and portable medical devices.
Services after inquiry:

1. Standard formal quotation document delivered within 24 working hours
2. Technical guidance for space matching, clearance selection and periodic lubrication maintenance
3. Upgrade options: P5 high precision grade, food-grade grease, stainless steel material
4. Competitive factory bulk price for large quantity small-package orders

Please state order quantity, rotating speed, operating temperature and equipment type for complete formal quotation documents.