High Load Taper Roller Bearing 25*52*16.25 - China Suppliers & Factory for Automotive, Mining, Wind Power Equipment
Bearing Detail - 30205 Metric Tapered Roller Bearing
| Item No. | 30205 (Metric) |
| Bearing Type | Taper roller bearing (Metric) |
| Seals Type | Open, 2RS |
| Material | Chrome steel GCr15 |
| Precision Rating | P0, P2, P4, P5, P6 |
| Clearance | C0, C2, C3, C4, C5 |
| Specification (d*D*T) | 25 * 52 * 16.25 mm |
| Inner Ring Width (B) | 15 mm |
| Outer Ring Width (C) | 13 mm |
| Contact Angle | 14.036° |
| Basic Dynamic Load (Cr) | 38.1 kN |
| Basic Static Load (Cor) | 33.5 kN |
| Reference Speed | 11,000 r/min |
| Limiting Speed | 13,000 r/min |
| Brand | JITO or OEM Service |
| Key Features |
• Long service life with premium chrome steel • Low operational noise via strict quality control • High load-bearing capacity by advanced design • Cost-effective & competitive price • OEM customization offered |
| Applications | Automobiles, rolling mills, mining, metallurgy, plastic machinery, and industrial gearboxes |
| Package Type | Pallet, wooden case, commercial individual packaging, or customized request |
Product Description & Structure
1. Taper Roller Bearing Introduction
Tapered roller bearings are separable radial-axial combination bearings. The inner and outer rings both have tapered raceways with conical rollers arranged between them. Depending on the assembly rows, they are categorized into single-row, double-row, and four-row configurations. Single-row tapered roller bearings are engineered to accommodate combined heavy radial loads and single-direction axial thrust loads. When a radial load is applied, an induced axial load component is generated; thus, bearings are typically mounted in opposing pairs or face-to-face/back-to-back arrangements to balance internal forces.
2. Suffix Definitions
Application Areas
Widely applied across gearboxes, industrial electric motors, speed reducers, and heavy driveline units requiring sustained radial-axial load support.
Extensively utilized in automobile wheel hub assemblies, differential gears, transmission output shafts, and steering mechanisms to handle complex driving dynamics.
Engineered for harsh operating environments, fitted into tractor power take-offs, axle hubs, and combine harvester drive systems under high dust and shock loads.
Crucial rotating component for mining equipment, continuous casting lines, metallurgy rolling mills, and textile manufacturing machines.
Installation & Maintenance Precautions
When mounting single-row tapered roller bearings, internal clearance (pre-load) must be correctly set manually during assembly. Double-row and four-row models come with factory preset clearances.
Ensure accurate shaft and housing fit tolerances to prevent excessive loose or tight fitting. Always align the cone and cup in the correct orientation to absorb directional thrust forces.
Select suitable grease or circulating oil based on operational speed and working temperatures. Employ efficient sealing systems to avert lubricant leakage and contaminant entry.
30000 & 32000 Series Tapered Roller Bearings Catalogue
| Bearing No. | Boundary Dimensions (mm) | Basic Load Ratings (N) | Limiting Speed (r/min) | Weight (kg) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | T | B | C | r (min) | r1 (min) | r2 (min) | Cr (Dynamic) | Cor (Static) | Grease | Oil | ||
| 30202 | 15 | 35 | 11.75 | 11 | 10 | 0.6 | 0.6 | 0.15 | 14,000 | 13,000 | 11,000 | 15,000 | 0.053 |
| 30302 | 42 | 14.25 | 13 | 11 | 1.0 | 1.0 | 0.30 | 23,000 | 20,000 | 9,900 | 13,000 | 0.098 | |
| 30203 | 17 | 40 | 13.25 | 12 | 11 | 1.0 | 1.0 | 0.30 | 20,000 | 20,000 | 9,900 | 13,000 | 0.080 |
| 32203 | 40 | 17.25 | 16 | 14 | 1.0 | 1.0 | 0.30 | 26,000 | 22,000 | 9,900 | 13,000 | 0.108 | |
| 30303 | 47 | 15.25 | 14 | 12 | 1.0 | 1.0 | 0.30 | 28,000 | 26,000 | 9,000 | 12,000 | 0.134 | |
| 32303 | 47 | 20.25 | 16 | 14 | 1.0 | 1.0 | 0.30 | 27,000 | 28,000 | 9,900 | 13,000 | 0.102 | |
| 32004 | 20 | 42 | 15.00 | 15 | 12 | 0.6 | 0.6 | 0.15 | 27,000 | 24,000 | 9,500 | 13,000 | 0.097 |
| 30204 | 47 | 15.25 | 14 | 12 | 1.0 | 1.0 | 0.30 | 29,000 | 28,000 | 8,800 | 12,000 | 0.127 | |
| 32204 | 47 | 19.25 | 18 | 15 | 1.0 | 1.0 | 0.30 | 39,000 | 36,000 | 8,800 | 12,000 | 0.160 | |
| 30304 | 52 | 16.25 | 15 | 13 | 1.5 | 1.5 | 0.60 | 35,000 | 34,000 | 8,000 | 11,000 | 0.169 | |
| 32304 | 52 | 22.25 | 21 | 18 | 1.5 | 1.5 | 0.60 | 48,000 | 46,000 | 8,000 | 11,000 | 0.245 | |
| 32005 | 25 | 47 | 15.00 | 15 | 12 | 0.6 | 0.6 | 0.15 | 33,000 | 27,000 | 7,900 | 11,000 | 0.114 |
| 33005 | 47 | 17.00 | 17 | 14 | 0.6 | 0.6 | 0.15 | 38,000 | 31,000 | 8,000 | 11,000 | 0.131 | |
| 30205 | 52 | 16.25 | 15 | 13 | 1.0 | 1.0 | 0.30 | 34,000 | 31,000 | 7,300 | 9,800 | 0.154 | |
| 32205 | 52 | 19.25 | 18 | 16 | 1.0 | 1.0 | 0.30 | 42,000 | 37,000 | 7,300 | 9,800 | 0.154 | |
| 33205 | 52 | 22.00 | 22 | 18 | 1.0 | 1.0 | 0.30 | 47,000 | 43,000 | 7,300 | 9,800 | 0.217 | |
| 30305 | 62 | 18.25 | 17 | 15 | 1.5 | 1.5 | 0.60 | 48,000 | 45,000 | 6,700 | 8,900 | 0.272 | |
| 31305 | 62 | 18.25 | 17 | 13 | 1.5 | 1.5 | 0.60 | 38,000 | 36,000 | 7,500 | 11,000 | 0.260 | |
| 32305 | 62 | 25.25 | 24 | 20 | 1.5 | 1.5 | 0.60 | 61,000 | 57,000 | 6,700 | 8,900 | 0.381 | |
| 32006 | 30 | 55 | 17.00 | 17 | 13 | 1.0 | 1.0 | 0.30 | 45,000 | 36,000 | 6,900 | 9,200 | 0.166 |
| 33006 | 55 | 20.00 | 20 | 16 | 1.0 | 1.0 | 0.30 | 50,000 | 46,000 | 6,700 | 9,000 | 0.208 | |
| 30206 | 62 | 17.25 | 16 | 14 | 1.0 | 1.0 | 0.30 | 48,000 | 43,000 | 6,300 | 8,400 | 0.241 | |
| 32206 | 62 | 21.25 | 20 | 17 | 1.0 | 1.0 | 0.30 | 64,000 | 54,000 | 6,300 | 8,400 | 0.241 | |
| 33206 | 62 | 25.00 | 25 | 20 | 1.0 | 1.0 | 0.30 | 75,000 | 64,000 | 6,300 | 8,400 | 0.344 | |
| 30306 | 72 | 20.75 | 19 | 16 | 1.5 | 1.5 | 0.60 | 60,000 | 58,000 | 5,700 | 7,600 | 0.408 | |
| 31306 | 72 | 20.75 | 19 | 16 | 1.5 | 1.5 | 0.60 | 57,000 | 47,000 | 6,700 | 9,500 | 0.390 | |
| 32306 | 72 | 28.75 | 27 | 23 | 1.5 | 1.5 | 0.60 | 80,000 | 72,000 | 7,000 | 10,000 | 0.550 | |
| 30207 | 35 | 72 | 18.25 | 17 | 15 | 1.5 | 1.5 | 0.60 | 61,000 | 55,000 | 5,500 | 7,400 | 0.344 |
| 32207 | 72 | 24.25 | 23 | 19 | 1.5 | 1.5 | 0.60 | 85,000 | 70,000 | 5,500 | 7,400 | 0.457 | |
| 33207 | 72 | 28.00 | 28 | 22 | 1.5 | 1.5 | 0.60 | 100,000 | 85,000 | 5,500 | 7,400 | 0.461 | |
| 30307 | 80 | 22.75 | 21 | 18 | 2.0 | 1.5 | 0.60 | 75,000 | 71,000 | 5,000 | 6,600 | 0.540 | |
| 32307 | 80 | 32.75 | 31 | 25 | 2.0 | 1.5 | 0.60 | 110,000 | 94,000 | 6,000 | 8,500 | 0.800 | |
| 30208 | 40 | 80 | 19.75 | 18 | 16 | 1.5 | 1.5 | 0.60 | 61,000 | 67,000 | 4,900 | 6,600 | 0.435 |
| 32208 | 80 | 24.75 | 23 | 19 | 1.5 | 1.5 | 0.60 | 79,000 | 93,000 | 4,900 | 6,600 | 0.558 | |
| 30308 | 90 | 25.25 | 23 | 20 | 2.0 | 1.5 | 0.60 | 91,000 | 102,000 | 4,400 | 5,900 | 0.769 | |
| 32308 | 90 | 35.25 | 33 | 27 | 2.0 | 1.5 | 0.60 | 110,000 | 140,000 | 4,200 | 5,600 | 1.080 | |
| 30210 | 50 | 90 | 21.75 | 20 | 17 | 1.5 | 1.5 | 0.60 | 77,000 | 93,000 | 4,000 | 5,300 | 0.563 |
| 32210 | 90 | 24.75 | 23 | 19 | 1.5 | 1.5 | 0.60 | 87,000 | 109,000 | 4,000 | 5,300 | 0.648 | |
| 30310 | 110 | 29.25 | 27 | 23 | 2.5 | 2.0 | 0.60 | 130,000 | 152,000 | 3,600 | 4,800 | 1.310 | |
| 32310 | 110 | 42.25 | 40 | 33 | 2.5 | 2.0 | 0.60 | 180,000 | 232,000 | 3,600 | 4,800 | 1.920 | |
For complete models and technical datasheets up to 440mm bore size, please contact our technical sales team.
Why Choose Our Bearing Solutions
Tailored engineering consultations to recommend optimal bearing configurations based on load, speed, and working conditions.
Full ISO compliance with precision testing instruments and multi-stage inspections from raw materials to final packaging.
Anti-rust treated export packaging with eco-friendly protective materials. Customized boxes, barcoding, and private labels supported.
Reliable worldwide shipping via ocean freight, air cargo, and international express services with full tracking support.
Backed by a 12-month quality guarantee covering material and workmanship defects from the official shipment date.
Frequently Asked Questions (FAQ)
What are the precise boundary dimensions of the 30205 bearing?
The 30205 metric taper roller bearing features an inside bore diameter (d) of 25 mm, an outside diameter (D) of 52 mm, a total assembled width (T) of 16.25 mm, a cone inner ring width (B) of 15 mm, and a cup outer ring width (C) of 13 mm.
How is internal clearance adjusted for single-row tapered roller bearings?
Single-row tapered roller bearings do not have a fixed internal clearance out of the box. Proper running clearance or preload must be set manually during mounting by adjusting the axial position of the cup relative to the cone using shims, locknuts, or threaded rings.
What load types can the 30205 tapered roller bearing accommodate?
The 30205 bearing is designed to support heavy radial loads and unidirectional axial loads simultaneously. With a dynamic load rating of 38.1 kN and a static load rating of 33.5 kN, it is ideal for high-stress industrial and automotive power transmissions.
What is the difference between grease and oil limiting speeds for this bearing?
Under standard operating conditions, the reference speed is 11,000 r/min with grease lubrication and reaches up to 13,000 r/min when using circulating oil lubrication, as oil provides more efficient heat dissipation.
What does the bearing suffix 'B' or 'CD' signify?
In tapered roller bearing terminology, the suffix 'B' signifies an increased contact angle for higher axial thrust capacity, while 'CD' indicates a double outer ring configuration equipped with integrated oil lubrication holes or grooves.
What warranty policy is provided for this product?
We provide a 12-month quality warranty against manufacturing and material defects from the shipping date. The warranty excludes issues caused by improper lubrication, incorrect mounting clearance, or physical damage.