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High Load Taper Roller Bearing 25*52*16.25 - China Suppliers & Factory for Automotive, Mining, Wind Power Equipment

Structural Features of Tapered Roller Bearings

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Our tapered roller bearings feature conical inner and outer raceways designed for optimal performance. The tapered rollers are strategically arranged between these raceways, ensuring that all projection lines of the conical surfaces meet at a single point along the bearing axis. This unique design enhances load distribution and increases bearing efficiency.

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As one of the leading China suppliers, we offer these separable bearings, allowing for straightforward installation and maintenance. The inner ring, roller, and cage assembly can easily be separated from the outer ring, making disassembly a breeze. Our factory utilizes advanced manufacturing techniques to ensure high-quality and reliable products that meet the needs of various industries.

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    Product Details

    Bearing Detail

    Item No. 30205 (Metric)
    Bearing Type Taper roller bearing (Metric)
    Seals Type Open, 2RS
    Material Chrome steel GCr15
    Precision P0, P2, P5, P6, P4
    Clearance C0, C2, C3, C4, C5
    Specification 25 * 52 * 16.25 mm
    Inner Ring Width 15 mm
    Outer Ring Width 13 mm
    Contact Angle 14.036°
    Basic Rated Dynamic Load 38.1 kN
    Basic Rated Static Load 33.5 kN
    Reference Speed 11,000 r/min
    Limiting Speed 13,000 r/min
    Brand JITO or OEM
    Features • Long-life with high quality
    • Low-noise with strict quality control
    • High-load capacity via advanced technical design
    • Competitive and cost-effective value
    • Comprehensive OEM services offered
    Application Automobiles, rolling mills, mining, metallurgy, plastic machinery, and other industries
    Bearing Package Pallet, wooden case, commercial packaging, or customized to requirements

    Product Description

    1. Taper Roller Bearing Introduction

    Tapered roller bearings are separable bearings where the inner and outer rings feature tapered raceways. Designed in single-row, double-row, and four-row structures depending on roller configuration, single-row tapered roller bearings support combined radial and single-direction axial loads. When radial loads are applied, an axial component force is generated, requiring a paired opposing bearing for balance.

    2. Taper Roller Bearing Application

    Featuring a separable design, the conical inner ring assembly (cone with rollers and cage) mounts independently from the outer cup. This facilitates mounting, dismounting, and maintenance across heavy automotive, industrial, and processing equipment.

    3. Tapered Roller Bearing Suffix Definitions
    A Internal structure change
    B Increased contact angle
    X Dimensions match ISO standards
    CD Double outer ring with oil hole/groove
    TD Double inner ring with tapered bore

    Application Areas

    Industrial Machinery

    Widely utilized in equipment requiring combined radial and axial load resistance, such as industrial gearboxes, electric motors, and speed reducers.

    Automotive Field

    Commonly applied in automotive wheel hub assemblies, differentials, and transmission systems, accommodating complex dynamic loads during vehicle operation.

    Agricultural Machinery

    Engineered for tractors, harvesters, and transmission systems to withstand severe operating environments, debris exposure, and heavy loads.

    Other Heavy Industries

    Reliably deployed in mining machinery, construction engineering equipment, metallurgy plants, and textile machinery systems.

    Installation Precautions

    Clearance Adjustment

    When installing single-row tapered roller bearings, internal clearance must be set manually to ensure ideal preload, running accuracy, and service life. Double-row and four-row units typically feature preset factory clearances.

    Installation Accuracy & Direction

    Ensure proper fit tolerances among the bearing, shaft, and housing seat. Maintain strict alignment to prevent excessive tightness or looseness, and verify load orientation against roller taper angles.

    Lubrication & Sealing Selection

    Selecting the correct lubricant and sealing mechanism is vital. Choose between high-grade grease or circulating oil based on rotational speed and temperature. Employ reliable seals to protect against lubricant loss and particulate contamination.

    Related 30000 Series Tapered Roller Bearings Catalogue

    Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (N) Limiting Speeds (r/min) Weight (kg)
    d D T B C r r1 r2 Dynamic Static Grease Oil
    Cr Cor
    30202 15 35 11.75 11 10 0.6 0.6 0.15 14000 13000 11000 15000 0.053
    30302 42 14.25 13 11 1 1 0.3 23000 20000 9900 13000 0.098
    30203 17 40 13.25 12 11 1 1 0.3 20000 20000 9900 13000 0.08
    32203 40 17.25 16 14 1 1 0.3 26000 22000 9900 13000 0.108
    30303 47 15.25 14 12 1 1 0.3 28000 26000 9000 12000 0.134
    32303 47 20.25 16 14 1 1 0.3 27000 28000 9900 13000 0.102
    32004 20 42 15 15 12 0.6 0.6 0.15 27000 24000 9500 13000 0.097
    30204 47 15.25 14 12 1 1 0.3 29000 28000 8800 12000 0.127
    32204 47 19.25 18 15 1 1 0.3 39000 36000 8800 12000 0.16
    30304 52 16.25 15 13 1.5 1.5 0.6 35000 34000 8000 11000 0.169
    32304 52 22.25 21 18 1.5 1.5 0.6 48000 46000 8000 11000 0.245
    320/22 22 44 15 15 12 0.6 0.6 0.15 33000 28000 9000 12000 0.108
    302/22 50 15.25 14 12 1 1 0.3 27000 26000 8100 11000 0.141
    322/22 50 19.25 18 15 1 1 0.3 41000 36000 8100 11000 0.172
    303/22 56 17.25 16 14 1.5 1.5 0.6 36000 34000 7700 10000 0.209
    323/22 56 22.25 21 18 1.5 1.5 0.6 45000 43000 7600 10000 0.263
    32005 25 47 15 15 12 0.6 0.6 0.15 33000 27000 7900 11000 0.114
    33005 47 17 17 14 0.6 0.6 0.15 38000 31000 8000 11000 0.131
    30205 52 16.25 15 13 1 1 0.3 34000 31000 7300 9800 0.154
    32205 52 19.25 18 16 1 1 0.3 42000 37000 7300 9800 0.154
    33205 52 22 22 18 1 1 0.3 47000 43000 7300 9800 0.217
    30305 62 18.25 17 15 1.5 1.5 0.6 48000 45000 6700 8900 0.272
    31305 62 18.25 17 13 1.5 1.5 0.6 38000 36000 7500 11000 0.26
    32305 62 25.25 24 20 1.5 1.5 0.6 61000 57000 6700 8900 0.381
    320/28 28 52 16 16 12 1 1 0.3 36000 33000 7500 10000 0.146
    302/28 58 17.25 16 14 1 1 0.3 35000 33000 7000 9000 0.204
    322/28 58 20.25 19 16 1 1 0.3 44000 40000 6900 9300 0.236
    303/28 68 19.75 18 16 1.5 1.5 0.6 46000 44000 6000 8000 0.333
    323/28 68 25.75 24 21 1.5 1.5 0.6 64000 60000 6000 8000 0.453
    32906 30 47 12 12 9 0.6 0.6 0.15 24000 17000 7500 10000 0.073
    32006 55 17 17 13 1 1 0.3 45000 36000 6900 9200 0.166
    33006 55 20 20 16 1 1 0.3 50000 46000 6700 9000 0.208
    30206 62 17.25 16 14 1 1 0.3 48000 43000 6300 8400 0.241
    32206 62 21.25 20 17 1 1 0.3 64000 54000 6300 8400 0.241
    33206 62 25 25 20 1 1 0.3 75000 64000 6300 8400 0.344
    30306 72 20.75 19 16 1.5 1.5 0.6 60000 58000 5700 7600 0.408
    31306 72 20.75 19 16 1.5 1.5 0.6 57000 47000 6700 9500 0.39
    32306 72 28.75 27 23 1.5 1.5 0.6 80000 72000 7000 10000 0.55
    320/32 32 58 17 17 13 1 1 0.3 45000 36000 6500 8500 0.191
    302/32 65 18.25 17 15 1 1 0.3 40000 38000 6200 8200 0.258
    322/32 65 22.25 21 18 1 1 0.3 50000 46000 6200 8200 0.33
    332/32 65 26 26 21 1 1 0.3 71000 62000 6200 8300 0.404
    303/32 75 21.75 20 18 1.5 1.5 0.6 58000 54000 5500 7000 0.445
    323/32 75 29.75 28 25 1.5 1.5 0.6 98000 86000 5500 7200 0.65
    32907 35 55 14 14 12 0.6 0.6 0.15 39000 27000 6300 8500 0.123
    32007 62 18 18 14 1 1 0.3 50000 41000 6100 8100 0.224
    33007 62 21 21 17 1 1 0.3 63000 51000 5600 8000 0.267
    30207 72 18.25 17 15 1.5 1.5 0.6 61000 55000 5500 7400 0.344
    32207 72 24.25 23 19 1.5 1.5 0.6 85000 70000 5500 7400 0.457
    33207 72 28 28 22 1.5 1.5 0.6 100000 85000 5500 7400 0.461
    30307 80 22.75 21 18 2 1.5 0.6 75000 71000 5000 6600 0.54
    31307 80 22.75 21 15 2 1.5 0.6 61000 56000 6000 8500 0.52
    32307 80 32.75 31 25 2 1.5 0.6 11000 94000 6000 8500 0.8
    32908 40 62 15 15 12 0.6 0.6 0.15 34000 47000 5600 7500 0.161
    32008 68 19 19 15 1 1 0.3 50000 65000 5300 7100 0.273
    33008 68 22 22 18 1 1 0.3 59000 82000 5300 7100 0.312
    33108 75 26 26 21 1.5 1.5 0.6 79000 103000 5200 6900 0.494
    30208 80 19.75 18 16 1.5 1.5 0.6 61000 67000 4900 6600 0.435
    32208 80 24.75 23 19 1.5 1.5 0.6 79000 93000 4900 6600 0.558
    33208 80 32 32 25 1.5 1.5 0.6 103000 132000 4900 6600 0.728
    30308 90 25.25 23 20 2 1.5 0.6 91000 102000 4400 5900 0.769
    31308 90 25.25 23 17 2 1.5 0.6 81000 95000 5600 7500 0.72
    32308 90 35.25 33 27 2 1.5 0.6 110000 140000 4200 5600 1.08

    For more specifications and customized bearing solutions, please visit our website: www.jito.cc

    Our Advantages

    Tailored Solution

    We communicate closely with clients to understand demands, enabling our engineering team to design optimum application-specific solutions.

    Quality Control (Q/C)

    Compliant with ISO standards, utilizing precision testing instruments and multi-stage inspections from raw materials to final packaging.

    Export Packaging

    Standardized, eco-friendly export packaging with optional customized boxes, barcodes, and specialized labels per customer requirement.

    Global Logistics

    Economical sea freight for bulk shipments, alongside rapid air cargo and express courier options for urgent project timelines.

    Frequently Asked Questions (FAQ)

    What are the precise dimensions of the 30205 tapered roller bearing?

    The standard 30205 metric bearing has an inside diameter (bore) of 25 mm, an outside diameter of 52 mm, and an assembled total width of 16.25 mm (cone width: 15 mm, cup width: 13 mm).

    Can a single-row 30205 bearing support bi-directional axial loads?

    No. Single-row tapered roller bearings support combined radial and axial loads in one direction only. To accommodate thrust loads in both directions, they are typically mounted in opposed pairs (back-to-back or face-to-face).

    What is the significance of the "B" suffix in tapered roller bearing codes?

    The suffix "B" indicates an increased contact angle. A larger contact angle enhances the bearing's capability to withstand higher axial (thrust) loads relative to radial forces.

    How should internal clearance be managed during installation?

    Single-row tapered roller bearings require manual setting and fine-tuning of internal clearance (or preload) during installation on the shaft and housing to achieve optimal load distribution and running precision.

    What warranty coverage is provided for these tapered roller bearings?

    Bearings are warranted against manufacturing and material defects for a period of 12 months from the shipping date, provided proper lubrication, alignment, and installation protocols are followed.

    Are custom sizes and OEM private labeling services supported?

    Yes, OEM manufacturing is fully supported, including custom precision grades (P0–P4), specialized clearances (C0–C5), custom packaging, laser marking, and customized box labels.

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