Helical Gear

HOW TO RECOGNISE IT

A helical gear is identified by teeth cut at an angle to the gear's axis rather than straight across, which lets successive teeth engage gradually for quieter, smoother running than a spur gear. Crossed at a right angle like this, a pair can connect shafts that don't intersect.

MISTAKEN FOR

• Spur Gear
• Bevel Gear
• Worm Gear