With the introduction of Germany advanced production technology of hardened roller, planetary gear transmission, stable running, low noise, strong bearing capacity, large power range. Configurable hydraulic coupling, backstop, brake, particularly suitable for various harsh environments.explosion-proof requirements of the large.medium-sized belt conveyer driving device. YTH type deceleration drum is composed of a roller body, drive.motor bracket part three ( type II without a motor bracket ). The drum body mainly comprises a roller casing, bearing.mounted on the drum reducer. Drive mainly comprises a motor, coupling, hydraulic coupler, backstop, such as brake parts. The motor frame is steel welded together, for mounting the motor.the shroud, users can also according to the needs of their own design.manufacture