SKF
Shaft Locking Method (Mounted)
Shaft locking secures the bearing insert to the shaft. SKF offers grub screw, eccentric locking collar, adapter sleeve, and taper bushing methods. The choice depends on load direction reversals, vibration severity, and ease of removal. A correct locking method prevents inner ring creep, overheating, and shaft damage. SKF provides selection tables based on application class.
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Trusted by Industry Leaders
Grub Screw Locking
Fast, low‑cost for unidirectional, steady loads.
Eccentric Locking Collar
Higher grip, resists reversing rotation and vibration.
Adapter Sleeve Mounting
Maximum radial grip, suits heavy‑duty and shock loads.
Taper Bush (Quick‑Lock)
Easily adjustable, ideal for frequent bearing changes.
Loctite‑Assisted Fixing
Augments other methods for extreme vibration resistance.
Shaft Damage Prevention
Correct method eliminates fretting and scoring of the shaft journal.
Selecting the Shaft Locking for a Vibrating Screen Application
The severe, reversing shock of a vibrating screen demands an eccentric locking collar or adapter‑sleeve mount. Grub screws will loosen rapidly, leading to inner ring creep and shaft wear. SKF’s classification tables explicitly match the locking method to vibration severity, preventing this common conveyor‑drive failure.
Installation Torque for Grub Screws and Eccentric Collars
Under‑torqued screws slip; over‑torqued screws crack the inner ring. SKF publishes exact tightening torques for each size and locking type. Using a calibrated torque wrench ensures the locking force is correct — a simple quality check that dramatically reduces field failures in mounted units.