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6312 Deep Groove Ball Bearing.jpg

6312 Deep Groove Ball Bearing from China Suppliers and Factory - Versatile and Reliable Solution for Mechanical Applications

Simple and Versatile Rolling Bearings: Our rolling bearings feature a robust design made up of an inner ring, outer ring, a set of high-quality steel balls, and a durable cage. As one of the most commonly used types of rolling bearings, they are ideal for a wide range of mechanical applications. Manufactured in our China factory, these bearings are available in various configurations, including options with dust covers, rubber sealing rings, and stop grooves, ensuring adaptability to different working conditions. Partner with reputable suppliers to source these essential components for your machinery needs.

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    Product Details

    Bearing Details & Specifications

    Item No. 6312 Deep Groove Ball Bearing
    Bearing Type Deep groove ball bearing
    Seals Type Open, ZZ, 2RS
    Material Chrome steel GCr15
    Precision Rating P0, P2, P4, P5, P6
    Clearance C0, C2, C3, C4, C5
    Cage Type Brass, steel, nylon, etc. (customizable)
    Vibration Level Z1V1, Z2V2, Z3V3, Z4V4
    Hardness HRC 58 - 64
    Row Number Single Row
    Specification (d × D × B) 60 × 130 × 31 mm
    Weight 1.72 Kg
    Basic Dynamic Load Rating (Cr) 82,000 N
    Basic Static Load Rating (Cor) 52,000 N
    Limiting Speed Grease: 5,000 – 5,400 r/min | Oil: 6,300 r/min
    Ball Bearing Features • Long service life with premium high quality
    • Low noise via strict quality control standards
    • High-load capability supported by advanced engineering design
    • Cost-competitive value with optimal performance
    • Full OEM customization services available
    Application Industrial field, Textile machinery, Medical equipment
    Packaging Options Pallet, wooden case, commercial packaging, or customized requirements

    Key Features

    Simple and Versatile Structure: The basic structure consists of an inner ring, an outer ring, a set of precision steel balls, and a cage. As the most widely utilized rolling bearing type, it suits diverse machinery. Alongside the open variant, sealed models with dust covers, rubber seals, and snap rings fulfill specialized working environments.

    Core Advantages

    High-Speed Performance

    Low friction coefficient and high speed limit, engineered to maintain efficiency during high-speed and ultra-high-speed operations.

    Low Maintenance

    Bearings with dust shields (ZZ) or contact rubber seals (2RS) arrive pre-lubricated for life, delivering maintenance-free uptime.

    High Versatility

    Robust, standardized form factor capable of taking combined radial and bidirectional axial loads across widespread industrial applications.

    Maintenance Guidelines

    Sealed Type Bearings

    Factory lubricated and sealed. Requires no additional grease replenishment during service. Recommended operational temperature should be maintained within -30°C to +120°C.

    Open Type Bearings

    Requires scheduled inspections and grease lubrication. Select compatible grease according to operating temperatures and speeds. Ensure the housing environment remains free from dirt, dust, and moisture.

    Selection Guide

    1. Load Capacity

    Evaluate magnitude and direction. Deep groove ball bearings primarily carry radial loads with light to moderate axial loads. If large axial thrust is present, choose larger radial clearance (C3/C4) or angular contact types.

    2. Speed Requirements

    With reference speeds reaching 11,000 r/min and limiting speeds around 7,000 r/min, these bearings excel in high-speed machinery compared to roller types.

    3. Installation Space

    Verify boundary dimensions (60mm bore × 130mm OD × 31mm width). Check mounting and dismounting tolerances to guarantee seamless fitting.

    4. Precision Classes

    Standard machinery uses P0. High-speed spindle systems, medical tools, and precision measurement equipment require higher precision grades (P6, P5, P4).

    Deep Groove Ball Bearing Catalogue

    Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Weight (kg)
    Open N Z 2Z RZ 2RZ RS 2RS d D B r (min) Cr Cor
    6003 6003N 6003-Z 6003-2Z 6003-RZ 6003-2RZ 6003-RS 6003-2RS 17 35 10 0.3 6.00 3.25 0.040
    6004 6004N 6004-Z 6004-2Z 6004-RZ 6004-2RZ 6004-RS 6004-2RS 20 42 12 0.6 9.38 5.03 0.068
    6005 6005N 6005-Z 6005-2Z 6005-RZ 6005-2RZ 6005-RS 6005-2RS 25 47 12 0.6 10.10 5.83 0.079
    6006 6006N 6006-Z 6006-2Z 6006-RZ 6006-2RZ 6006-RS 6006-2RS 30 55 13 1.0 13.20 8.30 0.113
    6007 6007N 6007-Z 6007-2Z 6007-RZ 6007-2RZ 6007-RS 6007-2RS 35 62 14 1.0 16.20 10.40 0.149
    6008 6008N 6008-Z 6008-2Z 6008-RZ 6008-2RZ 6008-RS 6008-2RS 40 68 15 1.0 17.00 11.70 0.185
    6009 6009N 6009-Z 6009-2Z 6009-RZ 6009-2RZ 6009-RS 6009-2RS 45 75 16 1.0 21.00 14.80 0.231
    6010 6010N 6010-Z 6010-2Z 6010-RZ 6010-2RZ 6010-RS 6010-2RS 50 80 16 1.0 22.00 16.30 0.250
    6011 6011N 6011-Z 6011-2Z 6011-RZ 6011-2RZ 6011-RS 6011-2RS 55 90 18 1.0 30.30 22.00 0.362
    6012 6012N 6012-Z 6012-2Z 6012-RZ 6012-2RZ 6012-RS 6012-2RS 60 95 18 1.1 31.70 24.20 0.385
    6013 6013N 6013-Z 6013-2Z 6013-RZ 6013-2RZ 6013-RS 6013-2RS 65 100 18 1.1 32.00 24.80 0.430
    6014 6014N 6014-Z 6014-2Z 6014-RZ 6014-2RZ 6014-RS 6014-2RS 70 110 20 1.1 38.60 30.40 0.569
    6015 6015N 6015-Z 6015-2Z 6015-RZ 6015-2RZ 6015-RS 6015-2RS 75 115 20 1.1 40.20 33.20 0.603
    6016 6016N 6016-Z 6016-2Z 6016-RZ 6016-2RZ 6016-RS 6016-2RS 80 125 22 1.1 47.50 39.80 0.821
    6017 6017N 6017-Z 6017-2Z 6017-RZ 6017-2RZ 6017-RS 6017-2RS 85 130 22 1.1 50.80 42.80 0.848
    6018 6018N 6018-Z 6018-2Z 6018-RZ 6018-2RZ 6018-RS 6018-2RS 90 140 24 1.5 58.00 49.90 1.120
    6019 6019N 6019-Z 6019-2Z 6019-RZ 6019-2RZ 6019-RS 6019-2RS 95 145 24 1.5 57.70 50.00 1.180
    6020 6020N 6020-Z 6020-2Z 6020-RZ 6020-2RZ 6020-RS 6020-2RS 100 150 24 1.5 60.50 54.00 1.250
    6021 6021N 6021-Z 6021-2Z 6021-RZ 6021-2RZ 6021-RS 6021-2RS 105 160 26 2.0 72.80 65.50 1.600
    6022 6022N 6022-Z 6022-2Z 6022-RZ 6022-2RZ 6022-RS 6022-2RS 110 170 28 2.0 81.90 72.90 1.930
    6024 6024N 6024-Z 6024-2Z 6024-RZ 6024-2RZ 6024-RS 6024-2RS 120 180 28 2.0 87.70 79.30 2.030
    6026 6026N 6026-Z 6026-2Z 6026-RZ 6026-2RZ 6026-RS 6026-2RS 130 200 33 2.0 105.00 96.80 3.150
    6028 6028N 6028-Z 6028-2Z 6028-RZ 6028-2RZ 6028-RS 6028-2RS 140 210 33 2.0 111.00 108.00 3.350
    6030 6030N 6030-Z 6030-2Z 6030-RZ 6030-2RZ 6030-RS 6030-2RS 150 225 35 2.1 125.00 125.00 4.800
    6202 6202N 6202-Z 6202-2Z 6202-RZ 6202-2RZ 6202-RS 6202-2RS 15 35 11 0.6 7.80 3.75 0.045
    6203 6203N 6203-Z 6203-2Z 6203-RZ 6203-2RZ 6203-RS 6203-2RS 17 40 12 0.6 9.56 4.75 0.065
    6204 6204N 6204-Z 6204-2Z 6204-RZ 6204-2RZ 6204-RS 6204-2RS 20 47 14 1.0 12.70 6.55 0.103
    6205 6205N 6205-Z 6205-2Z 6205-RZ 6205-2RZ 6205-RS 6205-2RS 25 52 15 1.0 14.00 7.80 0.127
    6206 6206N 6206-Z 6206-2Z 6206-RZ 6206-2RZ 6206-RS 6206-2RS 30 62 16 1.0 19.50 11.20 0.203
    6207 6207N 6207-Z 6207-2Z 6207-RZ 6207-2RZ 6207-RS 6207-2RS 35 72 17 1.1 25.50 15.30 0.287
    6208 6208N 6208-Z 6208-2Z 6208-RZ 6208-2RZ 6208-RS 6208-2RS 40 80 18 1.1 30.70 19.00 0.367
    6209 6209N 6209-Z 6209-2Z 6209-RZ 6209-2RZ 6209-RS 6209-2RS 45 85 19 1.1 33.20 21.60 0.416
    6210 6210N 6210-Z 6210-2Z 6210-RZ 6210-2RZ 6210-RS 6210-2RS 50 90 20 1.1 35.10 23.20 0.462
    6211 6211N 6211-Z 6211-2Z 6211-RZ 6211-2RZ 6211-RS 6211-2RS 55 100 21 1.5 43.40 29.20 0.607
    6212 6212N 6212-Z 6212-2Z 6212-RZ 6212-2RZ 6212-RS 6212-2RS 60 110 22 1.5 47.50 32.50 0.783
    6213 6213N 6213-Z 6213-2Z 6213-RZ 6213-2RZ 6213-RS 6213-2RS 65 120 23 1.5 55.90 40.50 0.990
    6214 6214N 6214-Z 6214-2Z 6214-RZ 6214-2RZ 6214-RS 6214-2RS 70 125 24 1.5 60.50 45.00 1.100
    6215 6215N 6215-Z 6215-2Z 6215-RZ 6215-2RZ 6215-RS 6215-2RS 75 130 25 1.5 66.30 49.00 1.200
    6216 6216N 6216-Z 6216-2Z 6216-RZ 6216-2RZ 6216-RS 6216-2RS 80 140 26 2.0 70.20 55.00 1.400
    6217 6217N 6217-Z 6217-2Z 6217-RZ 6217-2RZ 6217-RS 6217-2RS 85 150 28 2.0 83.20 64.00 1.800
    6218 6218N 6218-Z 6218-2Z 6218-RZ 6218-2RZ 6218-RS 6218-2RS 90 160 30 2.0 95.60 73.50 2.150
    6219 6219N 6219-Z 6219-2Z 6219-RZ 6219-2RZ 6219-RS 6219-2RS 95 170 32 2.0 108.00 81.50 2.600
    6220 6220N 6220-Z 6220-2Z 6220-RZ 6220-2RZ 6220-RS 6220-2RS 100 180 34 2.1 122.00 92.70 3.200
    6302 6302N 6302-Z 6302-2Z 6302-RZ 6302-2RZ 6302-RS 6302-2RS 15 42 13 1.0 11.40 5.40 0.082
    6303 6303N 6303-Z 6303-2Z 6303-RZ 6303-2RZ 6303-RS 6303-2RS 17 47 14 1.0 13.50 6.55 0.115
    6304 6304N 6304-Z 6304-2Z 6304-RZ 6304-2RZ 6304-RS 6304-2RS 20 52 15 1.1 15.90 7.80 0.141
    6305 6305N 6305-Z 6305-2Z 6305-RZ 6305-2RZ 6305-RS 6305-2RS 25 62 17 1.1 22.50 11.60 0.219
    6306 6306N 6306-Z 6306-2Z 6306-RZ 6306-2RZ 6306-RS 6306-2RS 30 72 19 1.1 28.10 16.00 0.350
    6307 6307N 6307-Z 6307-2Z 6307-RZ 6307-2RZ 6307-RS 6307-2RS 35 80 21 1.5 33.20 19.00 0.454
    6308 6308N 6308-Z 6308-2Z 6308-RZ 6308-2RZ 6308-RS 6308-2RS 40 90 23 1.5 31.40 22.40 0.639
    6309 6309N 6309-Z 6309-2Z 6309-RZ 6309-2RZ 6309-RS 6309-2RS 45 100 25 1.5 52.70 31.50 0.836
    6310 6310N 6310-Z 6310-2Z 6310-RZ 6310-2RZ 6310-RS 6310-2RS 50 110 27 2.0 61.80 38.00 1.050
    6311 6311N 6311-Z 6311-2Z 6311-RZ 6311-2RZ 6311-RS 6311-2RS 55 120 29 2.0 71.50 45.00 1.350
    6312 6312N 6312-Z 6312-2Z 6312-RZ 6312-2RZ 6312-RS 6312-2RS 60 130 31 2.1 81.90 52.00 1.700
    6313 6313N 6313-Z 6313-2Z 6313-RZ 6313-2RZ 6313-RS 6313-2RS 65 140 33 2.1 92.30 60.00 2.100
    6314 6314N 6314-Z 6314-2Z 6314-RZ 6314-2RZ 6314-RS 6314-2RS 70 150 35 2.1 104.00 68.00 2.500
    6315 6315N 6315-Z 6315-2Z 6315-RZ 6315-2RZ 6315-RS 6315-2RS 75 160 37 2.1 114.00 76.50 3.000
    6316 6316N 6316-Z 6316-2Z 6316-RZ 6316-2RZ 6316-RS 6316-2RS 80 170 39 2.1 124.00 86.50 3.600
    6317 6317N 6317-Z 6317-2Z 6317-RZ 6317-2RZ 6317-RS 6317-2RS 85 180 41 3.0 133.00 96.50 4.250
    6318 6318N 6318-Z 6318-2Z 6318-RZ 6318-2RZ 6318-RS 6318-2RS 90 190 43 3.0 143.00 108.00 4.900
    6319 6319N 6319-Z 6319-2Z 6319-RZ 6319-2RZ 6319-RS 6319-2RS 95 200 45 3.0 153.00 119.00 5.750
    6320 6320N 6320-Z 6320-2Z 6320-RZ 6320-2RZ 6320-RS 6320-2RS 100 215 47 3.0 174.00 140.00 7.000
    16004 16004N 16004-Z 16004-2Z 16004-RZ 16004-2RZ 16004-RS 16004-2RS 20 42 8 0.3 7.90 4.45 0.050
    16005 16005N 16005-Z 16005-2Z 16005-RZ 16005-2RZ 16005-RS 16005-2RS 25 47 8 0.3 8.42 5.15 0.060
    16006 16006N 16006-Z 16006-2Z 16006-RZ 16006-2RZ 16006-RS 16006-2RS 30 55 9 0.3 11.20 6.25 0.085
    16007 16007N 16007-Z 16007-2Z 16007-RZ 16007-2RZ 16007-RS 16007-2RS 35 62 9 0.3 11.50 8.80 0.100
    16008 16008N 16008-Z 16008-2Z 16008-RZ 16008-2RZ 16008-RS 16008-2RS 40 68 9 0.3 12.50 10.20 0.130
    16009 16009N 16009-Z 16009-2Z 16009-RZ 16009-2RZ 16009-RS 16009-2RS 45 75 10 0.6 15.60 12.20 0.155
    16010 16010N 16010-Z 16010-2Z 16010-RZ 16010-2RZ 16010-RS 16010-2RS 50 80 10 0.6 16.10 13.10 0.166
    Looking for full product drawings or custom bearing dimensions? Visit www.jito.cc →

    Frequently Asked Questions (FAQ)

    1. What are the key dimensional specifications of the 6312 bearing?
    The 6312 deep groove ball bearing features an inside diameter (bore) of 60 mm, an outside diameter of 130 mm, a width of 31 mm, and weighs approximately 1.72 kg.
    2. What is the difference between open, ZZ, and 2RS seal designs?
    Open bearings have no closures and require external oil or grease lubrication. ZZ models have dual metal dust shields suitable for low-friction dust resistance. 2RS bearings feature dual contact rubber seals providing superior protection against dust and moisture, pre-lubricated for life.
    3. What are the dynamic and static load ratings for bearing 6312?
    The 6312 bearing has a basic dynamic load rating (Cr) of 82,000 N (82 kN) and a basic static load rating (Cor) of 52,000 N (52 kN), making it suitable for moderate to heavy radial loads.
    4. Can 6312 deep groove ball bearings handle axial loads?
    Yes. While designed primarily for radial loads, deep groove ball bearings can support moderate axial (thrust) loads in both directions. For larger axial loads, selecting a bearing with a larger internal clearance (e.g., C3) is recommended.
    5. In which industries are 6312 bearings most commonly applied?
    6312 bearings are widely used across general industrial machinery, electric motors, gearboxes, textile machinery, agricultural equipment, and medical devices.
    6. What cage materials can be selected for custom OEM orders?
    Standard cages are made of stamped pressed steel. Brass cages (for higher speeds and harsh vibration) and engineered nylon (polyamide) cages are also customizable to meet specific operational requirements.

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