Selection focus for this working condition
High torque, shock load and maintenance windows demand reliable gear and drum gear couplings.
Recommended coupling types Drum gear couplings, gear spindles or mill spindles, cross-shaft universal couplings, and safety or torque-limiting couplings for heavy-duty stands.
Typical working conditions Very high torque, strong impact, frequent reversing, rolling-force fluctuation, thermal expansion, water mist and scale contamination.
Key selection parameters Peak torque, service factor, allowable angular and offset compensation, tooth contact strength, lubrication sealing, axial float, and speed range.
Installation and maintenance notes Align in hot condition, keep tooth lubrication and seals effective, inspect tooth wear, backlash and bolt preload during roll-change shutdowns, and balance high-speed sections.
Use with caution / not recommended Ordinary rigid sleeves or low-capacity jaw couplings are unsuitable for main mill impact duty; unsealed gear couplings should not run exposed in water mist or scale.
