6211-2Z 55x100x21mm Double Metal Shield Single Row Deep Groove Ball Bearing

1. Product Overview

6211-2Z is standard metric single row deep groove ball bearing with overall dimension 55×100×21mm. 2Z stands for double-sided non-contact stamped metal dust shields, which lock internal grease inside and block dry dust, powder and fine solid impurities without increasing rotation torque. Deep raceway structure bears radial load and bidirectional light & medium axial load simultaneously, matched super-finished raceway and high-precision steel balls deliver stable high-speed operation, low vibration and quiet performance. Pre-filled long-life industrial grease realizes maintenance-free running, widely applied to industrial driving motors, large cooling fans, medium-duty gearboxes, agricultural water pumps, light construction auxiliary equipment and general automation transmission assemblies.

2. Technical Specifications

Dimension drawings and medium-load durability test reports available on request.

3. Core Advantages

• Double thin non-contact 2Z metal dust shields, excellent dry dust isolation, low rotation resistance to sustain continuous high-speed operation
• Balanced medium load capacity, stable performance under long-term continuous light & medium load working conditions
• Mirror super-finished raceway and polished steel balls, minimize friction and running noise for motor and fan equipment
• Pre-filled long-life anti-wear mechanical grease, no frequent disassembly and relubrication required
• Standard ISO metric interchangeable size, universal replacement for mainstream industrial and agricultural machinery spare parts
• Multiple optional versions: open type 6211, 2RS rubber sealed waterproof bearing, stainless steel anti-corrosion model
• Custom C3 loose clearance, high-temperature resistant grease and outer ring laser marking services available

4. Application Scenarios

• Industrial power equipment: Three-phase driving motors, large axial cooling fans, medium generator rotating spindles
• Transmission equipment: Medium-duty gearboxes, light conveyor main rollers, textile heavy loom transmission parts
• Agricultural machinery: Tractor water pumps, grain processing equipment, light harrow auxiliary rotating components
• Light construction machinery: Small excavator auxiliary spindles, stone crusher light support bearings
• General automation: Large packaging machine rotating assemblies, medium-sized testing instrument main shafts

Fit OEM assembly and aftermarket replacement of dust-proof medium-load industrial rotating equipment.

5. Why Choose GQZ Bearing

25 years professional manufacturer of 62 series deep groove ball bearings. Adopt high-purity vacuum smelting GCr15 bearing steel with complete quenching and tempering heat treatment, reliable anti-fatigue performance under long-time continuous medium load. Full OEM & ODM customization support for seal type, clearance grade, precision class and special lubricant. Complete strict inspection workflow: raw material hardness test, CNC ultra-precision raceway superfinishing, high-precision steel ball sorting and high-speed rotation aging test. 24-hour professional technical support for motor shaft fit tolerance and lubrication scheme design. Factory direct bulk price, sufficient 6211-2Z bearing spot stock for global motor, fan and agricultural machinery manufacturers.

6. Quality Control

1. Raw material chemical composition and hardness inspection
2. Integral quenching and stress relief tempering to eliminate internal residual stress
3. CNC ultra-precision inner and outer ring raceway mirror superfinishing
4. High-precision steel ball screening and stamped steel cage stamping forming
5. Dust-free assembly with anti-wear mechanical grease pre-filling
6. Continuous high-speed rotation aging and medium-load wear resistance cycle testing
7. Full dimension inspection, anti-rust oil coating, neutral moisture-proof export carton packaging

Each batch completes rotation smoothness and temperature rise test to guarantee stable long-time dust-proof medium-load operation for industrial and agricultural equipment.

7. Get A Quote

Send inquiries for 6211-2Z double metal shield deep groove ball bearings used on industrial motors, cooling fans and agricultural machinery gearboxes.

Available services:

1. Standard formal quotation document delivered within 24 working hours
2. Technical guidance for shaft fit tolerance and high-speed lubricant selection
3. Upgrade options: P5 high precision grade, C3 loose clearance, stainless steel corrosion resistant version
4. Competitive factory bulk unit price for large quantity orders

Please state order quantity, operating load, rotating speed and working environment to receive complete quotation documents.

8. FAQ