Since the hard particles into the friction surfaces cause wear.

Small crane bridge crane reducer is an important transmission components, through the teeth for torque transmission, Hand Pallet Truck-speed operation of the motor adjusted to the desired speed, the transmission torque during gear teeth will appear broken tooth surface pitting, tooth surface gum and the tooth surface abrasion and other mechanical failure, causing the gear causes of failure are as follows:

a. tooth surface is not smooth, stress concentration points raised, or lubricants dirty;
b. overload or short-term impact load, caused by repeated bending fatigue fracture;
c. Since the hard particles into the friction surfaces cause wear.
d. due to high temperature caused by lubrication failure;
2 small crane preventive measures

a. replacement of a small crane lubricant should be timely, and put a small crane housing clean, but small crane to select the appropriate type of lubricant;
b. small crane can not be set up to use, start braking to slow, steady, non-specific circumstances prohibit suddenly hit the anti-car;
c. should always check the small crane lubricant is clean; find small crane dirty lubrication must be promptly replaced.