61903-2RS1/C3 Thin Deep Groove Ball Bearing 17x30x7mm Double 2RS1 Rubber Seal C3

1. Product Overview

61903-2RS1/C3 single row thin-section deep groove ball bearing, standard metric dimension 17×30×7mm.

Code Definition

• 619: Slim thin wall light-duty deep groove ball series
• 03: Size code for 17mm inner bore
• 2RS1: Double-sided contact rubber lip seal, blocks dust, moisture and fine abrasive particles
• C3: Enlarged radial clearance to eliminate thermal expansion seizure under continuous high-speed running

Slim cross-section minimizes radial assembly space. Standard deep groove raceway bears radial load and light bidirectional axial load simultaneously. Double contact rubber seals lock internal grease and isolate external pollutants, pre-filled low-noise lithium grease. Widely used for compact micro motors, small power tools, precision testing instruments and miniature automation rotary parts.

2. Technical Specifications

Drawings and high-speed low-noise durability test reports available on request.

3. Core Advantages

1. Slim thin wall lightweight design fits narrow-space compact equipment assembly
2. C3 oversized clearance avoids bearing locking after long-time high-speed heating
3. Double 2RS1 contact rubber seals fully block dust, water mist and tiny debris
4. Super-finished steel balls deliver ultra-low noise and stable high-speed rotation
5. Universal deep groove structure bears radial and slight bidirectional axial loads
6. Standard unified metric dimensions for direct one-to-one aftermarket replacement
7. Light thin stamped steel cage reduces rotation friction torque
8. Customizable precision grade, high-temperature synthetic grease and outer ring laser marking

4. Application Scenarios

• Compact high-speed micro motors, small cooling fans and blowers
• Precision optical testing instruments and thin rotary transmission assemblies
• Handheld small power tools and miniature textile roller components
• Mini packaging automation and office precision machinery
• Light medical rotary parts and smart lightweight equipment transmission

Suitable for OEM production and aftermarket maintenance of miniature compact light industrial equipment.

5. Why Choose GQZ Bearing

25 years specialized production of 619 slim thin wall series deep groove ball bearings including 61903-2RS1/C3 compact motor dedicated models.
Global unified standard dimensional standards, fully interchangeable with mainstream imported thin section bearings.
Complete OEM & ODM custom service for radial clearance adjustment, special lubricant and outer ring identification marking.
Strict full-process inspection: raw material hardness test, steel ball sorting, long-cycle high-speed noise aging and C3 clearance batch screening.
Professional bearing engineers provide micro shaft load matching and thin housing installation guidance within 24 working hours.
Factory direct bulk wholesale pricing, stable continuous mass supply for global miniature compact equipment spare part buyers.

6. Quality Control

Raw material composition and hardness inspection for GCr15 thin-wall inner/outer rings and steel ball blanks.
CNC thin-wall precision turning, multi-cycle stress relief tempering and ultra-precision raceway superfinishing.
Steel ball high-temperature quenching, mirror polishing and automatic dimensional grouping sorting.
Stamped thin steel cage forming, quantitative low-noise grease filling and 2RS1 rubber seal press-fitting curing procedure.
Performance verification tests: high-speed continuous rotation noise aging, dust-mist mixed environment sealing durability, C3 clearance stability test.
Final full dimension, bore roundness and raceway surface reinspection before anti-rust oil coating and neutral moisture-proof export carton packaging.
Each finished production batch undergoes long-term high-speed simulation test to guarantee quiet stable sealed thin-wall operation performance.

7. Get A Quote

Submit purchasing demand for 61903-2RS1/C3 thin wall bearings applied to compact micro motors, precision optical instruments and miniature power tools.
Full one-stop professional services after inquiry submission:

1. Official standardized quotation document delivered within 24 working hours
2. Technical support for micro light load matching, thin shaft press-fit installation and long-life lubrication
3. Custom bearing performance upgrades: P5 high precision grade, high-temperature resistant synthetic grease
4. Competitive factory direct bulk unit price for large-volume single model orders

Please state order quantity and actual operational working conditions (high-speed, narrow installation space, slightly humid dusty environment) to receive complete formal quotation documents.

8. FAQ