PTO shafts

SIPMA WPT branded PTO shafts designed to transmit a specific torque from the Power-Take-Off spline shaft of the tractor to the Power-Take-On spline shaft of the machine, are the most popular in Poland.
SIPMA S.A. makes PTO shafts designed to transmit the torque of the following ranges: 220 Nm, 300 Nm, 460 Nm, 540 Nm, 630 Nm, 680 Nm, 900 Nm, 1200 Nm and 1700 Nm; with the following versions of equipment:

• standard,
• with one-way clutch,
• with safety clutches:
  • friction,
  • friction and overrunning ,
  • overload clutch with scoops operating radially,
  • with shear bolt,

The friction clutch ( SC ) maintains the maximum allowable torque under the normal toque setting. It can be used as a starting device or overload safety device for machines with elements having high inertia.

The friction and overrunning clutch ( SD ) allows for the torque transmission without switching of the drive, even under overload conditions exceeding the maximum clutch setting. At the same time, the one-way friction clutch allows for the torque transmission in one direction only. It can be used for machines with elements having high inertia.

The overload clutch ( SP ) with scoops operating radially operates by interrupting the drive transmission when the torque exceeds the clutch setting.

The clutch with shear bolt ( SK ) protects the driveline against blockage and disconnects the torque transmission from the tractor when the torque exceeds the clutch setting which breaks the bolt.

The overrunning clutch ( SJ ) transmits the torque in one direction only and is used in PTO shafts which drive machines with elements having high inertia (e.g. disc mowers).

High quality. The PTO shafts manufactured in SIPMA S.A. meet all the safety requirements comprised in European Union directives and passed tests in certified laboratories which authorises the manufacturer to issue an EC certificate.