The KOYO 7E-CRG 75X130X40 is a high-performance single-row tapered roller bearing manufactured by JTEKT KOYO, engineered to withstand combined radial and axial loads for heavy-duty industrial and mobile machinery applications.
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The KOYO 7E-CRG 75X130X40 is a high-performance single-row tapered roller bearing manufactured by JTEKT KOYO, engineered to withstand combined radial and axial loads for heavy-duty industrial and mobile machinery applications.
Bore d=75 mm, Outer diameter D=130 mm, Width B=40 mm, Minimum chamfer r=2.0 mm, tolerance class P0 per ISO 286, radial clearance CN standard grade, boundary dimensions comply with ISO 355 and JIS B1512 standards.
Inner ring, outer ring and tapered rollers adopt SUJ2 high carbon chromium bearing steel, hardened to 60–64 HRC, featuring excellent wear resistance, contact fatigue strength and dimensional stability under fluctuating loads. The pressed steel cage uses SPCC cold rolled steel, ensuring stable roller guidance and impact resistance under dynamic operating conditions.
Production follows standardized processes including hot forging for blank forming to refine grain structure, precision turning to achieve near-net shape, isothermal quenching & tempering for uniform hardness, ultra-precision grinding and superfinishing of raceways and roller surfaces to minimize surface roughness and reduce friction loss, with 100% dimensional and noise inspection before delivery.
Calculated L10 basic rating life follows ISO 281 standard under standard operating conditions (90% reliability, clean lubrication, normal temperature, steady load). Service life is mainly affected by overload, lubricant degradation, contamination and misalignment.
Widely deployed in construction machinery, heavy-duty automotive axles, gearboxes, mining equipment and agricultural machinery. Its capability of bearing combined radial-axial loads makes it ideal for transmission and wheel end assemblies requiring high rigidity and shock resistance.
Regular inspection cycle is 2000–3000 operating hours. Recommended lithium complex bearing grease with filling volume of 1/3–1/2 of internal free space. Inspection items include operating temperature, vibration, abnormal noise and seal integrity. Immediate shutdown and disassembly are required if pitting, spalling or grease contamination is detected.
| BRAND | FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/JKL |
| BEARINGS NO. | 7E-CRG 75X130X40 KOYO |
| TYPE | Cam follower |
| Inner(d)mm | 75 |
| Outer(D)mm | 130 |
| Width(B)mm | 40.3 |
| WEIGHT/KG | 2.412 |
| EAN CODE |
+86-510-6831-3099
No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA
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