China Suppliers Factory Taper Roller Bearing 30*72*28.75 Separable Design for Auto/Construction High Load Applications
Bearing Detail (32306 Metric)
| Item No. | 32306 (Metric) |
| Bearing Type | Taper roller bearing (Metric) |
| Material | Chrome steel GCr15 |
| Precision Rating | P0, P2, P5, P6, P4 |
| Internal Clearance | C0, C2, C3, C4, C5 |
| Boundary Dimensions | 30 × 72 × 27 mm |
| Inner Ring Width (B) | 19 mm |
| Outer Ring Width (C) | 14.5 mm |
| Contact Angle | 11.86° |
| Basic Rated Dynamic Load | 21,357 lbf |
| Basic Rated Static Load | 19,109 lbf |
| Reference Speed | 7,500 r/min |
| Limiting Speed | 10,000 r/min |
| Brand | JITO or OEM |
| Separable Design | Yes |
| Key Features |
|
| Application | Automobiles, rolling mills, mining, metallurgy, plastic machinery, and other industrial machinery |
| Package Options | Pallet, wooden case, industrial/commercial packaging, or customized as required |
32306 Taper Roller Bearing Structural Features
Separable Design
The inner ring (cone) and outer ring (cup) of the bearing can be mounted separately, significantly simplifying installation, dismounting, structural design, and routine maintenance.
Combined Load Capacity
Engineered primarily to handle heavy radial and axial combined loads in a single direction. The induced axial component under radial loads is typically balanced by a paired opposing bearing.
Adjustable Clearance
Radial and axial internal clearance can be fine-tuned during mounting, optimizing operating performance, running accuracy, and bearing service life across diverse operating conditions.
Large Load Capacity
Compared with angular contact ball bearings, line contact between the tapered rollers and raceways provides superior rigidity and significantly higher load-bearing limits.
Limiting Speed Characteristics
Due to line-contact structural characteristics and roller-raceway friction dynamics, tapered roller bearings operate at moderate limiting speeds compared to deep groove ball bearings.
Industrial Applications
Automotive Industry
Commonly applied in automotive wheel hub assemblies—especially for heavy-duty trucks and commercial buses—supporting vehicle weight (radial load) and dynamic braking forces (axial load).
Industrial Machinery
Extensively fitted in machine tool spindles, gear reducers, mining gear, metallurgical equipment, and plastic processing machinery requiring robust composite load endurance.
Engineering Machinery
Utilized across heavy excavators, wheel loaders, and cranes within pivot joints and transmission systems to sustain complex duty cycles and ensure high uptime.
Agricultural Machinery
Built for tractors, harvesters, and implement wheel drives, reliably handling severe radial shocks and axial thrust across rugged working terrains.
Related 30300 Series Tapered Roller Bearings Catalogue
| Bearing Numbers | Boundary Dimensions (mm) | Basic Load Ratings (N) | Limiting Speeds (r/min) | Weight (kg approx) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | T | B | C | r | r1 | r2 | 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 | 1 | 0.3 | 23,000 | 20,000 | 9,900 | 13,000 | 0.098 | |
| 30203 | 17 | 40 | 13.25 | 12 | 11 | 1 | 1 | 0.3 | 20,000 | 20,000 | 9,900 | 13,000 | 0.080 |
| 32203 | 40 | 17.25 | 16 | 14 | 1 | 1 | 0.3 | 26,000 | 22,000 | 9,900 | 13,000 | 0.108 | |
| 30303 | 47 | 15.25 | 14 | 12 | 1 | 1 | 0.3 | 28,000 | 26,000 | 9,000 | 12,000 | 0.134 | |
| 32303 | 47 | 20.25 | 16 | 14 | 1 | 1 | 0.3 | 27,000 | 28,000 | 9,900 | 13,000 | 0.102 | |
| 32004 | 20 | 42 | 15 | 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 | 1 | 0.3 | 29,000 | 28,000 | 8,800 | 12,000 | 0.127 | |
| 32204 | 47 | 19.25 | 18 | 15 | 1 | 1 | 0.3 | 39,000 | 36,000 | 8,800 | 12,000 | 0.160 | |
| 30304 | 52 | 16.25 | 15 | 13 | 1.5 | 1.5 | 0.6 | 35,000 | 34,000 | 8,000 | 11,000 | 0.169 | |
| 32304 | 52 | 22.25 | 21 | 18 | 1.5 | 1.5 | 0.6 | 48,000 | 46,000 | 8,000 | 11,000 | 0.245 | |
| 320/22 | 22 | 44 | 15 | 15 | 12 | 0.6 | 0.6 | 0.15 | 33,000 | 28,000 | 9,000 | 12,000 | 0.108 |
| 302/22 | 50 | 15.25 | 14 | 12 | 1 | 1 | 0.3 | 27,000 | 26,000 | 8,100 | 11,000 | 0.141 | |
| 322/22 | 50 | 19.25 | 18 | 15 | 1 | 1 | 0.3 | 41,000 | 36,000 | 8,100 | 11,000 | 0.172 | |
| 303/22 | 56 | 17.25 | 16 | 14 | 1.5 | 1.5 | 0.6 | 36,000 | 34,000 | 7,700 | 10,000 | 0.209 | |
| 323/22 | 56 | 22.25 | 21 | 18 | 1.5 | 1.5 | 0.6 | 45,000 | 43,000 | 7,600 | 10,000 | 0.263 | |
| 32005 | 25 | 47 | 15 | 15 | 12 | 0.6 | 0.6 | 0.15 | 33,000 | 27,000 | 7,900 | 11,000 | 0.114 |
| 33005 | 47 | 17 | 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 | 1 | 0.3 | 34,000 | 31,000 | 7,300 | 9,800 | 0.154 | |
| 32205 | 52 | 19.25 | 18 | 16 | 1 | 1 | 0.3 | 42,000 | 37,000 | 7,300 | 9,800 | 0.154 | |
| 33205 | 52 | 22 | 22 | 18 | 1 | 1 | 0.3 | 47,000 | 43,000 | 7,300 | 9,800 | 0.217 | |
| 30305 | 62 | 18.25 | 17 | 15 | 1.5 | 1.5 | 0.6 | 48,000 | 45,000 | 6,700 | 8,900 | 0.272 | |
| 31305 | 62 | 18.25 | 17 | 13 | 1.5 | 1.5 | 0.6 | 38,000 | 36,000 | 7,500 | 11,000 | 0.260 | |
| 32305 | 62 | 25.25 | 24 | 20 | 1.5 | 1.5 | 0.6 | 61,000 | 57,000 | 6,700 | 8,900 | 0.381 | |
| 30206 | 30 | 62 | 17.25 | 16 | 14 | 1 | 1 | 0.3 | 48,000 | 43,000 | 6,300 | 8,400 | 0.241 |
| 32206 | 62 | 21.25 | 20 | 17 | 1 | 1 | 0.3 | 64,000 | 54,000 | 6,300 | 8,400 | 0.241 | |
| 33206 | 62 | 25 | 25 | 20 | 1 | 1 | 0.3 | 75,000 | 64,000 | 6,300 | 8,400 | 0.344 | |
| 30306 | 72 | 20.75 | 19 | 16 | 1.5 | 1.5 | 0.6 | 60,000 | 58,000 | 5,700 | 7,600 | 0.408 | |
| 31306 | 72 | 20.75 | 19 | 16 | 1.5 | 1.5 | 0.6 | 57,000 | 47,000 | 6,700 | 9,500 | 0.390 | |
| 32306 | 72 | 28.75 | 27 | 23 | 1.5 | 1.5 | 0.6 | 80,000 | 72,000 | 7,000 | 10,000 | 0.550 | |
| 32906 | 47 | 12 | 12 | 9 | 0.6 | 0.6 | 0.15 | 24,000 | 17,000 | 7,500 | 10,000 | 0.073 | |
| 32006 | 55 | 17 | 17 | 13 | 1 | 1 | 0.3 | 45,000 | 36,000 | 6,900 | 9,200 | 0.166 | |
| 30308 | 40 | 90 | 25.25 | 23 | 20 | 2 | 1.5 | 0.6 | 91,000 | 102,000 | 4,400 | 5,900 | 0.769 |
| 31308 | 90 | 25.25 | 23 | 17 | 2 | 1.5 | 0.6 | 81,000 | 95,000 | 5,600 | 7,500 | 0.720 | |
| 32308 | 90 | 35.25 | 33 | 27 | 2 | 1.5 | 0.6 | 110,000 | 140,000 | 4,200 | 5,600 | 1.080 | |
| 30310 | 50 | 110 | 29.25 | 27 | 23 | 2.5 | 2 | 0.6 | 130,000 | 152,000 | 3,600 | 4,800 | 1.310 |
| 31310 | 110 | 29.25 | 27 | 19 | 2.5 | 2 | 0.6 | 120,000 | 143,000 | 4,500 | 6,000 | 1.200 | |
| 32310 | 110 | 42.25 | 40 | 33 | 2.5 | 2 | 0.6 | 180,000 | 232,000 | 3,600 | 4,800 | 1.920 | |
Our Advantages & Services
Engineered Solutions
We initiate every project with direct communication to grasp your exact operational requirements. Our engineering team develops optimized application solutions tailored to your duty cycles.
Quality Control (Q/C)
Operating strictly under ISO standards with precision testing instruments and structured multi-tier inspection protocols, guaranteeing flawless quality from raw steel intake to final packaging.
Standard & Custom Packaging
Standardized export packing with eco-friendly protective materials. Custom branded boxes, labels, barcodes, and anti-rust wrapping are readily available upon customer request.
Global Logistics Support
Efficient global sea freight forwarding handles heavy batch shipments securely, while expedited airfreight and door-to-door express delivery are supported for urgent orders.
12-Month Warranty
We provide a comprehensive 12-month warranty from the date of dispatch covering material and manufacturing defects under regular, recommended operational guidelines.