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China 6312 Deep Groove Ball Bearing Suppliers | High-Quality Bearings from Trusted Factory

Simple and Versatile Bearings from China: Our high-quality rolling bearings feature a classic structure that includes an inner ring, outer ring, a set of steel balls, and a cage. As one of the most commonly utilized types of bearings, they are ideal for a wide variety of mechanical applications. In addition to our standard models, we offer various configurations with dust covers, rubber sealing rings, and stop grooves to cater to the diverse needs of different working conditions. Sourced directly from leading suppliers in China, our factory ensures top-notch manufacturing quality and reliability for all your bearing needs.

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    Product Details

    Bearing Detail: 6312 Deep Groove Ball Bearing

    Item No. 6312 Deep Groove Ball Bearing
    Bearing Type Deep groove ball bearing
    Seals Type Open, ZZ, 2RS
    Material Chrome steel GCr15
    Precision P0, P2, P5, P6, P4
    Clearance C0, C2, C3, C4, C5
    Cage Type Brass, steel, nylon, etc. (Customizable)
    Vibration Z1V1, Z2V2, Z3V3, Z4V4
    Hardness HRC58 - 64
    Row Number Single Row
    Specification 60 * 130 * 31 mm
    Weight 1.72 Kg
    Basic Dynamic Load (C) 82000 N (85.2 kN)
    Basic Static Load (C0) 52000 N (52 kN)
    Limit Speed Grease: 5000-5400 r/min | Oil: 6300 r/min
    Application Industrial field, Textile machinery, Medical equipment
    Bearing Package Pallet, wooden case, commercial packaging or customized
    ✓ Long-life High Quality ✓ Low-noise JITO Control ✓ High-load Tech Design ✓ Competitive Value ✓ OEM Services Offered

    Features

    Simple and Versatile Structure

    The basic structure consists of an inner ring, an outer ring, a set of steel balls, and a cage. It is the most commonly used type of rolling bearing and is suitable for a variety of mechanical applications. In addition to the basic type, there are also various variant structures with dust covers (ZZ), rubber sealing rings (2RS), stop grooves, etc., engineered to meet the operational needs of different working conditions.

    Key Advantages

    High-Speed Performance

    Features a small friction coefficient and a high-speed limit, making it ideal for high-speed or extremely high-speed industrial operations.

    Low Maintenance

    Bearings equipped with dust caps or seals on both sides are maintenance-free products that come lubricated for life.

    Good Versatility

    Boasts a simple, versatile, and robust design capable of withstanding both radial and axial loads in both directions across extensive applications.

    Selection Guide

    Load Capacity

    With a basic dynamic load rating of 85.2 kN and static load rating of 52 kN, the 6312 bearing fits moderate radial loads. For heavy axial loads, opt for larger radial clearances.

    Speed Requirements

    Reference speed is 11,000 r/min with a limit speed of 7,000 r/min. Perfect for high-speed machinery; low-speed setups may use alternate high-capacity bearings.

    Installation Space

    Dimensions are 60mm × 130mm × 31mm (d × D × B). Ensure system housing compatibility and consider mounting/dismounting convenience for easy maintenance.

    Precision Requirements

    For high-accuracy machinery such as precision instruments, choose bearings manufactured under tighter precision tolerances (P5, P4, P2).

    Maintenance Guidelines

    Sealed Bearings (2RS / ZZ)

    Requires no additional lubrication or maintenance during regular service life. Operating temperature should remain strictly within the range of -30 °C to +120 °C.

    Open-Type Bearings

    Requires periodic inspection and replenishment of appropriate lubricating grease according to operating parameters. Maintain a clean environment to prevent dust and contaminant intrusion.

    Deep Groove Ball Bearing Catalogue

    Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN / N) Weight
    Open N Z 2Z RZ 2RZ RS 2RS d D B r (min) Dynamic (Cr) Static (Cor) kg (approx.)
    6003 6003N 6003-Z 6003-2Z 6003-RZ 6003-2RZ 6003-RS 6003-2RS 17 35 10 0.3 6 3.25 0.04
    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 10.1 5.83 0.079
    6006 6006N 6006-Z 6006-2Z 6006-RZ 6006-2RZ 6006-RS 6006-2RS 30 55 13 1 13.2 8.3 0.113
    6007 6007N 6007-Z 6007-2Z 6007-RZ 6007-2RZ 6007-RS 6007-2RS 35 62 14 1 16.2 10.4 0.149
    6008 6008N 6008-Z 6008-2Z 6008-RZ 6008-2RZ 6008-RS 6008-2RS 40 68 15 1 17 11.7 0.185
    6009 6009N 6009-Z 6009-2Z 6009-RZ 6009-2RZ 6009-RS 6009-2RS 45 75 16 1 21 14.8 0.231
    6010 6010N 6010-Z 6010-2Z 6010-RZ 6010-2RZ 6010-RS 6010-2RS 50 80 16 1 22 16.3 0.25
    6011 6011N 6011-Z 6011-2Z 6011-RZ 6011-2RZ 6011-RS 6011-2RS 55 90 18 1 30.3 22 0.362
    6012 6012N 6012-Z 6012-2Z 6012-RZ 6012-2RZ 6012-RS 6012-2RS 60 95 18 1.1 31.7 24.2 0.385
    6013 6013N 6013-Z 6013-2Z 6013-RZ 6013-2RZ 6013-RS 6013-2RS 65 100 18 1.1 32 24.8 0.43
    6014 6014N 6014-Z 6014-2Z 6014-RZ 6014-2RZ 6014-RS 6014-2RS 70 110 20 1.1 38.6 30.4 0.569
    6015 6015N 6015-Z 6015-2Z 6015-RZ 6015-2RZ 6015-RS 6015-2RS 75 115 20 1.1 40.2 33.2 0.603
    6016 6016N 6016-Z 6016-2Z 6016-RZ 6016-2RZ 6016-RS 6016-2RS 80 125 22 1.1 47.5 39.8 0.821
    6017 6017N 6017-Z 6017-2Z 6017-RZ 6017-2RZ 6017-RS 6017-2RS 85 130 22 1.1 50.8 42.8 0.848
    6018 6018N 6018-Z 6018-2Z 6018-RZ 6018-2RZ 6018-RS 6018-2RS 90 140 24 1.5 58 49.9 1.12
    6019 6019N 6019-Z 6019-2Z 6019-RZ 6019-2RZ 6019-RS 6019-2RS 95 145 24 1.5 57.7 50 1.18
    6020 6020N 6020-Z 6020-2Z 6020-RZ 6020-2RZ 6020-RS 6020-2RS 100 150 24 1.5 60.5 54 1.25
    6202 6202N 6202-Z 6202-2Z 6202-RZ 6202-2RZ 6202-RS 6202-2RS 15 35 11 0.6 7.8 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 12.7 6.55 0.103
    6205 6205N 6205-Z 6205-2Z 6205-RZ 6205-2RZ 6205-RS 6205-2RS 25 52 15 1 14 7.8 0.127
    6206 6206N 6206-Z 6206-2Z 6206-RZ 6206-2RZ 6206-RS 6206-2RS 30 62 16 1 19.5 11.2 0.203
    6207 6207N 6207-Z 6207-2Z 6207-RZ 6207-2RZ 6207-RS 6207-2RS 35 72 17 1.1 25.5 15.3 0.287
    6208 6208N 6208-Z 6208-2Z 6208-RZ 6208-2RZ 6208-RS 6208-2RS 40 80 18 1.1 30.7 19 0.367
    6302 6302N 6302-Z 6302-2Z 6302-RZ 6302-2RZ 6302-RS 6302-2RS 15 42 13 1 11.4 5.4 0.082
    6303 6303N 6303-Z 6303-2Z 6303-RZ 6303-2RZ 6303-RS 6303-2RS 17 47 14 1 13.5 6.55 0.115
    6304 6304N 6304-Z 6304-2Z 6304-RZ 6304-2RZ 6304-RS 6304-2RS 20 52 15 1.1 15.9 7.8 0.141
    6305 6305N 6305-Z 6305-2Z 6305-RZ 6305-2RZ 6305-RS 6305-2RS 25 62 17 1.1 22.5 11.6 0.219
    6308 6308N 6308-Z 6308-2Z 6308-RZ 6308-2RZ 6308-RS 6308-2RS 40 90 23 1.5 31.4 22.4 0.639
    6312 6312N 6312-Z 6312-2Z 6312-RZ 6312-2RZ 6312-RS 6312-2RS 60 130 31 2.1 81.9 52 1.7
    6405 6405N 6405-Z 6405-2Z 6405-RZ 6405-2RZ 6405-RS 6405-2RS 25 80 21 1.5 35.8 19.3 0.53
    6406 6406N 6406-Z 6406-2Z 6406-RZ 6406-2RZ 6406-RS 6406-2RS 30 90 23 1.5 43.6 23.6 0.738
    61905 61905N 61905-Z 61905-2Z 61905-RZ 61905-2RZ 61905-RS 61905-2RS 25 42 9 0.3 6.63 4 0.045
    61809 61809N 61809-Z 61809-2Z 61809-RZ 61809-2RZ 61809-RS 61809-2RS 45 58 7 0.3 4.65 4.32 0.04
    16004 16004N 16004-Z 16004-2Z 16004-RZ 16004-2RZ 16004-RS 16004-2RS 20 42 8 0.3 7.9 4.45 0.05
    62203 62203N 62203-Z 62203-2Z 62203-RZ 62203-2RZ 62203-RS 62203-2RS 17 40 16 0.6 7.36 4.48 0.086
    62304 62304N 62304-Z 62304-2Z 62304-RZ 62304-2RZ 62304-RS 62304-2RS 20 52 21 1.1 12.3 7.81 0.197
    For more specifications and complete catalogs, please visit our website: www.jito.cc

    Frequently Asked Questions (FAQ)

    Q1: What are the key dimensions and weight of the 6312 deep groove ball bearing?
    The 6312 deep groove ball bearing has a bore diameter of 60 mm, an outer diameter of 130 mm, and a width of 31 mm (60*130*31 mm). It weighs approximately 1.70 to 1.72 kg.
    Q2: What sealing types and cage materials are available for JITO bearings?
    JITO provides open types, metal shields on one or both sides (Z, ZZ), and rubber seals (RS, 2RS, RZ, 2RZ). Cage materials can be customized in pressed steel, machined brass, or nylon to match specific working conditions.
    Q3: What are the dynamic and static load ratings for bearing 6312?
    The 6312 bearing has a basic dynamic load rating (Cr) of 81.9 kN to 85.2 kN (82,000 N) and a basic static load rating (C0r) of 52 kN (52,000 N), offering robust high-load capacity for industrial machinery.
    Q4: How do maintenance requirements differ between sealed and open bearings?
    Sealed bearings (2RS/ZZ) come pre-lubricated for life and are maintenance-free within -30 °C to +120 °C. Open bearings require periodic grease inspection, regular replenishment, and a clean environment to avoid contaminant ingress.
    Q5: Which industries commonly utilize 6312 deep groove ball bearings?
    Due to their high-speed limit, low friction, and bi-directional load capabilities, 6312 ball bearings are widely used in general industrial machinery, textile equipment, medical apparatus, electric motors, and precision gearboxes.
    Q6: What precision and clearance classes are available for deep groove ball bearings?
    They are manufactured in standard to ultra-precision ratings including P0, P6, P5, P4, and P2, with radial internal clearances ranging from C0, C2, C3, C4, to C5.

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