61903-2RS1 Extra Thin Wall Deep Groove Ball Bearing 17×30×7mm Double RS1 Rubber

1. Product Overview

The 61903-2RS1 belongs to 619 extra thin wall thin section deep groove ball bearing series, equipped with double-sided RS1 single-lip contact rubber seals and standard CN radial clearance. Extra slim cross-section greatly reduces radial and axial occupied space, perfect for miniaturized compact machinery with limited installation space. Double RS1 contact rubber seals closely fit raceway surfaces to isolate dust, water mist and tiny impurities, suitable for slightly humid and dusty working environments. It supports combined radial loads and light bidirectional axial loads, runs steadily with ultra-low noise and low friction under high-speed rotation, widely applied to micro motors, precision instruments, small ventilation fans and miniature automation equipment.

Get a quote within 24 hours for your project

2. Technical Specifications

Complete technical data and dimensional drawings are available upon customer request.

3. Key Advantages

• Extra thin wall ultra-compact structure saves much installation space for miniature precision equipment, realizing equipment miniaturization design
• Double-sided RS1 single-lip contact rubber seals deliver excellent dust-proof and waterproof performance, lock internal grease to extend maintenance cycle
• Super-finished deep groove raceway ensures low vibration, quiet and stable high-speed rotation, bears radial and slight bidirectional axial loads simultaneously
• Pre-filled grease sealed structure avoids frequent on-site refueling, effectively lower daily maintenance workload
• Light self-weight reduces extra rotational load of tiny components, improve operation precision of precision devices
• Customizable options include C3 enlarged clearance, open non-sealed style, ZZ metal dust shield, OEM laser marking and special temperature lubricating grease

Effectively reduce equipment failure frequency and cut long-term operation maintenance costs

4. Applications

This bearing is widely matched for the following miniature precision light-duty equipment:

• Micro drive motors, tiny cooling fans and miniature gear reduction assemblies
• Optical detection instruments, precision measuring equipment rotary parts
• Light miniature automation conveying and small packaging machinery transmission units
• Household small electrical appliances, textile micro machinery rotating components
• Aftermarket replacement spare parts for thin-wall sealed mini rotary machinery

Ideal ultra-thin sealed bearing solution for compact precision equipment working in damp, dusty environments

5. Why Choose GQZ Bearing

• 25 years of professional thin wall 619 series deep groove ball bearing manufacturing experience
• Products exported to more than 50 countries and regions worldwide, fully interchangeable with international standard thin section bearings
• Rich experience in OEM, ODM and customized thin-wall sealed bearing production
• Complete raw material inspection and finished product full testing procedures before delivery
• Professional engineering team provides one-on-one targeted technical support within 24 hours
• Stable mass production capacity with preferential wholesale price for long-term bulk cooperation

We focus on stable dimensional tolerance, consistent low-noise running performance and long-term win-win partnerships with global buyers

6. Quality Control

• Raw material chemical composition and surface hardness inspection of GCr15 chrome bearing steel
• Precision thin-wall turning processing and mirror superfinishing treatment on inner and outer raceway surfaces
• Standardized constant temperature heat treatment process to stabilize internal metal stress and promote wear resistance
• Comprehensive testing covering radial clearance, sealing tightness, rotation noise, flexibility and dynamic/static load capacity
• Uniform grease filling volume inspection for double-sided sealed bearings
• Final visual appearance and thin-wall dimensional re-inspection before packaging and shipment

Every batch of bearings passes full sampling inspection to guarantee uniform stable sealed operation

7. Get a Quote Now

If you need high-quality 61903-2RS1 extra thin wall double RS1 rubber seal deep groove ball bearings for miniature precision equipment, send your inquiry to us directly.

You will receive full supporting professional services after submitting inquiry:

• Fast official factory quotation reply within 24 hours
• Targeted installation space and working condition parameter matching by professional bearing engineers
• Customized bearing solution suggestions including open variant and C3 enlarged clearance options
• Competitive direct factory bulk wholesale price

Send your demand and order quantity to us to obtain detailed formal offer

8. FAQ