Boston Gear®
HLSH-1

When used with worm gears, Boston Gear® worms provide an effective answer for power transmission applications requiring high ratio speed reduction in a limited space using right angle (90 deg), non-intersecting shafts. Manufactured from acetal, nylon and hardened and unhardened steel, they offer the smoothest, quietest form of gearing when properly applied. Because the efficiency of a worm gear drive depends on the lead angle and number of starts on the worm, it's important to keep the ratio as low as possible. It is equally important that worms and worm gears used together must have the same diametrical pitch and threads.

Boston Gear® Helical Gear Worm, Spiral Tooth, 0.188 in Bore, 0.38 in OD, 1 Threads, 48 Diametral Pitch, 0.333 in Pitch Diameter, 0.563 in Face Width, 3 deg 35 min Lead Angle, Right Hand Direction of Rotation, 0.26 in Diameter Hub, 0.19 in Hub Projection, 0.753 in Overall Length, 14.5 deg Pressure Angle, Steel

• 90 deg non intersecting shaft applications
• Smoothest and quietest form of gearing
• High ratio speed reduction
• Minimal space requirements
• Resistance to back driving with some ratios
• Increased efficiency with lower ratios
• Hardened teeth offer versatility

• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Boston_Gear_CD1142_Catalog.pdf