Disc Couplings,Lovejoy

Disc Couplings From Lovejoy


Types of Disc couplings include the three piece industrial spacer unit used for general industrial applications and on OEM equipment. The 5-piece drop-out coupling is specially suited for refinery and API type applications. The close coupled units fit in place of standard gear couplings. The SXGS reduced moment type and the DIR drop out type can replace gear coupling floating shaft units by matching up to the existing gear coupling rigid hubs mounted on the driver and driven equipment. Variations to these can also be made as shown on the back pages of the Disc Coupling catalog.

Click below for the Disc Coupling Catalog.

Disc Coupling

Advantages of the Lovejoy Disc coupling:

  • No need for lubrication and maintenance

  • The coupling can be inspected without disassembly. Additionally, the condition of the discs can be checked while the machine is running, using a strobe light*

  • Torsionally rigid without any backlash

  • No wearing parts, high resistance to harsh environmental conditions

  • Infinite life if properly aligned

  • If misalignment is kept within specified limits, these couplings can last as long as the machines on which they are installed

  • High power density (more torque for a given overall diameter)

It should be noted that disc couplings will impose high axial forces on the thrust bearings if the machines are not properly spaced. The piloting of the disc pack to the hub is a key factor especially for high speed applications.

The Lovejoy Disc coupling uses fitted bolts as pilots, but for high speed applications has also found a straight-forward method of piloting the disc packs to their hubs. By machining rabbets in the washers that are used to unitize the disc pack,** it ensures the repeatability of residual unbalance standards, as mandated by API 671.

* It is not recommended that the coupling be operated without a guard
** Patent Pending



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