Lee Spring Drawbar Springs are suitable for use in many applications such as: supporting a porch swing/garden swing seat, attaching a tarpaulin or a pool cover, tethering a boat, tensioning fences or gates.
Further information on Drawbar Springs can be found on the Lee Spring website - www.
Typically, drawbar systems are built to be modular.
For applications under 10,000 rpm, hydraulic, two-channel rotary unions are used for unclamping the power drawbar and the combined two-channel, rotary unions are used for hydraulic unclamping on one channel and the delivery of the medium--air or cooling lubricant--on the second channel.
Unclamp units are used to unclamp the power drawbar.
Drawbar torque generally needs not exceed 30 ft lb unless extreme machining conditions are expected.
Inspect and replace the drawbar and collet as needed.
Contract notice: coupler drawbar
replacement on eurotunnel shuttles coupling system.
Others use hydraulic systems that consist of a cylinder coupled to the drawbar with an accumulator nearby.
Taking into account that the drawbar runs through the spindle, it would be impossible to dismantle the spindle for inspection and still perform a thorough PM in a timely manner.
An excessive load that is correctly attached to a drawbar set at the recommended height will cause slipping of the rear wheels or stalling of the tractor's engine before a rollover is induced (2).
For proper hitching to a tractor, the drawbar on a tractor should not be altered by raising or shortening it, and the load should never be attached directly to the axle (2); a two- or three-point hitch should never be used as a single-point hitch instead of the drawbar (10); and loads that attach by a single point should attach only to the drawbar.