Worm Gear

Worm Gears teeth resembles ACME screw thread which mates with a helical gear, except that it is made to envelope the worm as seen along the worm’s axis. Operation of worm gears is analogous to a screw. The relative motion between this gears is sliding rather than rolling. The uniform distribution of tooth pressure on these gears enables use of metal with inherently low coefficients of friction such a bronze wheel gear with hardened steel with worm gears. These gears rely on full fluid film lubrication and require heavy oil compounded to enhance lubricity and film strength to prevent metal contact.

Double Enveloping Worm Gear has a radial changing pitch diameter. This increases the number and amount of tooth shear area.

Worm Gear

Material : Cast Iron, Mild Steel, VCN, Nylon, PTFE, atc.

Treatment : Deep Hardening or Induction.

LINK TO : Worm Gear

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