7300B Series (Single Row, 40°)
Material: Chrome Steel (Gcr15)
Contact Angle: 40° (B-Type, Heavy Duty)
Precision: P0, P6, P5, P4
Structure: Single Row / 73xx Medium Series
Cage: Steel / Brass / Phenolic Resin
Clearance: C2, C0, C3, CA
Bore Range: 10mm – 150mm
Application: Heavy thrust load scenarios, vertical heavy machinery, mining crushers
WhatsApp: +86 18663551233
Get a Quote
The 7300B Series angular contact ball bearings with a 40° contact angle in the medium 73xx series represent the ultimate thrust-capable design within standard angular contact geometries. Built for punishing axial load conditions where reliability is non-negotiable. Deployed in vertical heavy machinery, mining crusher main shafts, and extreme industrial thrust environments.
Technical Specifications
| Bearing No. | Bore (d) mm | Outer Dia. (D) mm | Width (B) mm | Dyn. Load Cr (kN) | Stat. Load Cor (kN) | Ref. Speed (rpm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 7300B | 10 | 35 | 11 | 7.8 | 4.0 | 22000 | 0.05 |
| 7301B | 12 | 37 | 12 | 9.8 | 5.1 | 20000 | 0.06 |
| 7302B | 15 | 42 | 13 | 12.2 | 6.4 | 17000 | 0.08 |
| 7303B | 17 | 47 | 14 | 15.2 | 8.0 | 15000 | 0.11 |
| 7304B | 20 | 52 | 15 | 19.5 | 10.3 | 13000 | 0.15 |
| 7305B | 25 | 62 | 17 | 25.5 | 13.8 | 11000 | 0.25 |
| 7306B | 30 | 72 | 19 | 32.5 | 17.5 | 9500 | 0.35 |
| 7307B | 35 | 80 | 21 | 40.0 | 22.0 | 8500 | 0.5 |
| 7308B | 40 | 90 | 23 | 48.0 | 26.5 | 7500 | 0.65 |
| 7309B | 45 | 100 | 25 | 57.5 | 31.5 | 6700 | 0.85 |
| 7310B | 50 | 110 | 27 | 67.5 | 37.5 | 6300 | 1.1 |
| 7311B | 55 | 120 | 29 | 78 | 44 | 6000 | 1.4 |
| 7312B | 60 | 130 | 31 | 90 | 52 | 5600 | 1.75 |
| 7313B | 65 | 140 | 33 | 104 | 62 | 5300 | 2.1 |
| 7314B | 70 | 150 | 35 | 118 | 72 | 5000 | 2.55 |
| 7315B | 75 | 160 | 37 | 132 | 83 | 4800 | 3.1 |
| 7316B | 80 | 170 | 39 | 148 | 95 | 4500 | 3.7 |
| 7317B | 85 | 180 | 41 | 165 | 108 | 4300 | 4.3 |
| 7318B | 90 | 190 | 43 | 185 | 122 | 4000 | 5.0 |
| 7319B | 95 | 200 | 45 | 205 | 138 | 3800 | 5.85 |
| 7320B | 100 | 215 | 47 | 225 | 155 | 3600 | 7.2 |
