Precise and powerful custom solutions.
HZPT is the world innovator in double-enveloping worm gear technology. Cone Drive gear sets are available in standard 
sizes and ratios or we can prepare custom worm gear sets to any specs.
Key Enveloping Worm Gear Features
Sizes: 1.5” through 52” CD
Standard Ratios: 5:1 – 70:1
Backlash: Standard / Low / Zero
Gear Components: Tin + Alum Bronze, Ductile Iron, Steel Aluminium, Torlon®
Worm Materials: Hardened Metal + Nitride, STAINLESS
Modified output configuration (e.g. keyways, splines)
Custom Design Options: Custom made Center Distance
Special Ratios: Up to 200:1 one stage; size dependent, Sector gears
Enveloping Worm Gear
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