6204‑2ZNR Deep Groove Ball Bearing 20x47x14 Double Metal Shield With Snap‑Ring Groove NR

1. Product Overview

6204‑2ZNR is single‑row deep groove ball bearing, dimension 20 mm bore × 47 mm OD × 14 mm width.
Suffix explanation:
‑ 2Z: Double‑sided non‑contact metal dust shields, retain factory pre‑filled grease, block solid dust particles, maintenance‑free design, cannot resist liquid splash.
‑ NR: Outer ring with snap‑ring groove, supplied with matching snap‑ring for simple axial positioning inside bearing housing, saves housing shoulder processing work.

Adopt deep raceway structure, can bear bidirectional radial load plus moderate bidirectional axial load. Stamped steel cage separates GCr15 chrome‑steel balls for low‑friction, low‑noise high‑speed running. Whole rings are fully quenched bearing‑steel. Widely used for small industrial motors, fans, water pumps, reducers, conveyor rollers and general‑purpose machinery requiring outer‑ring axial limit positioning.

2. Technical Specifications

Mounting‑shoulder drawing, snap‑ring installation guide and performance test reports can be provided upon customer request.

3. Core Advantages

• NR snap‑ring groove with snap‑ring: Realizes simple axial fixation of outer ring in housing; no complicated housing shoulder machining required, reduces customer housing‑processing cost and assembly time.
• Double‑sided 2Z metal non‑contact shields: Small rotation resistance, no extra friction loss; lock built‑in grease, block dry solid dust, achieve long‑term maintenance‑free operation.
• Classic deep‑groove ball‑bearing structure, bears radial load and moderate bidirectional axial load, fits composite‑load transmission shafts of general‑purpose equipment.
• Super‑finished raceway and steel‑ball surface, low vibration & low‑noise performance, stable continuous‑running performance for small‑motor‑class equipment.
• GCr15 overall quenched steel, stable metallographic structure, good anti‑fatigue and wear‑resistant performance for cyclic working conditions.
• Stamped‑steel riveted cage, light‑weight and high rigidity, evenly distribute rolling‑element stress and lower high‑speed noise.
• Standard ISO metric dimension, fully interchangeable with global 6204‑2ZNR bearings, direct replacement without modifying original housing.
• Rich custom options: P0/P6/P5 precision grade, C0/C3/C4 clearance, stainless‑steel variant, OEM outer‑ring laser marking, neutral export anti‑rust carton, special‑temperature grease filling.

4. Application Scenarios

6204‑2ZNR double‑shield snap‑ring‑groove deep‑groove ball bearing is maintenance‑free rotary support spare‑part for 20 mm‑shaft machinery requiring outer‑ring axial positioning:

• Small industrial three‑phase motors, generator rotors, high‑speed centrifugal‑fan main‑shaft bearing assemblies
• Water‑pump & hydraulic‑pump transmission rotating units
• Reducer input/output shafts needing simple outer‑ring axial limit
• Logistics light‑conveyor idle rollers, textile‑machine small‑roller transmission bearings
• General‑purpose agricultural machinery, packaging‑equipment rotating support positions

Aftermarket interchangeable 6200‑series NR snap‑ring‑groove deep‑groove ball bearing
Low‑noise dust‑proof bearing solution for small motor manufacturers, fan/pump OEMs and industrial‑equipment bulk‑maintenance procurement.

5. Why Choose GQZ Bearing

• 25‑years manufacturing experience of 6200‑series deep‑groove ball bearings including 6204‑2ZNR.
• 6204‑2ZNR is dimension‑for‑dimension interchangeable with international‑standard counterparts, consistent load‑rating, 2Z‑shield sealing and NR‑groove dimensional tolerances.
• Complete OEM & ODM custom service covering multi‑precision‑grade, multi‑clearance‑group, stainless‑steel material and special‑temperature‑resistant grease filling.
• Strict pre‑shipment QC: GCr15 raw‑material metallurgy & hardness inspection, steel‑ball sorting, long‑cycle high‑speed rotation aging test, dry‑dust environment wear‑simulation test.
• Professional bearing engineering team provides one‑on‑one load‑matching calculation, shaft‑housing fit‑tolerance guidance and snap‑ring assembly tips within 24 working hours.
• Large‑scale production workshop offers competitive factory‑direct bulk‑wholesale price, stable long‑term supply for global small‑motor, fan, pump and general‑machinery spare‑part buyers.

We focus on NR snap‑ring‑groove deep‑groove ball‑bearings, 2Z metal‑shield maintenance‑free sealing design, ISO‑standard metric dimensions, pursuing win‑win long‑term cooperation with general‑industrial‑transmission‑equipment suppliers.

6. Quality Control

• Raw‑material chemical‑composition, internal‑defect and hardness inspection for GCr15 inner‑ring, outer‑ring and steel‑ball blanks
• Precision turning, multi‑time stress‑relief tempering, ultra‑precision super‑finish grinding for deep raceway and snap‑ring‑groove surface
• Steel‑ball high‑temperature quenching, mirror‑polishing and high‑precision auto‑sorting production‑line
• Stamped‑steel‑cage stamping‑riveting, 2Z metal‑shield press‑fitting, matching snap‑ring inspection, factory pre‑filled anti‑wear‑grease processing
• Targeted performance‑tests: 6204‑2ZNR long‑cycle high‑speed temperature‑rise rotation aging test, dry‑dust sealing‑durability test, variable‑load anti‑fatigue wear‑detection
• Full re‑check for dimension‑tolerance, raceway surface‑finish, snap‑ring‑groove size and shielding tightness before anti‑rust‑oil coating and export moisture‑proof‑carton packing.

Each production batch of 6204‑2ZNR undergoes small‑motor‑simulation cyclic‑rotation test to guarantee stable low‑noise dust‑proof rotary‑support performance for 20‑mm‑shaft industrial‑transmission‑systems.

7. Get A Quote Now

If you need 6204‑2ZNR 20x47x14 double‑metal‑shield snap‑ring‑groove deep‑groove ball bearings for small motor/fan manufacturing, transmission‑shaft‑assembly and industrial‑equipment‑maintenance bulk‑matching, send your purchase‑inquiry directly.
Full professional supporting‑services after inquiry submission:

• Official formal quotation reply within 24 working‑hours
• One‑on‑one radial‑&‑axial‑load‑matching calculation, shaft‑housing‑fit‑tolerance guidance and snap‑ring‑installation technical‑support from professional‑bearing‑engineers
• Custom‑bearing‑performance‑upgrade options including multi‑precision‑grade, multi‑clearance‑group and special‑temperature‑resistant‑grease
• Favorable factory‑direct bulk‑wholesale price for large‑volume 6204‑2ZNR single‑model‑orders

Please provide purchase‑quantity, working‑conditions (high‑speed / dry‑dust / vibration) and continuous‑operating‑temperature to get detailed official‑quotation‑documents.

8. FAQ