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Height limiter circuits

Height limiter circuits

N D Mechanical Services Ltd are happy to supply all your requirements for hydraulic height limiter circuits these circuits are used to set the maximum height of equipment  when working under low roofs or power lines.

 By controlling the machine hydraulic pilot control for the boom cylinder rise with a proximity sensor which measures the position of the machine boom. When the boom reaches its preset height the oil to the boom rise spool is switched to tank stopping the boom from rising.The operation of the circuit is controlled by a key operated control box. For additional safety the control box key can be removed when the circuit is armed, all other machine functions work as standard and when the boom is lowered to a safe height the circuit is reset .

Circuits are supplied in kit form or can be fitted on site throughout the UK 

Circuits fitted on site are supplied with calibration and test certificates

Case studys

Height limiter circuit for tractor mounted Bomford B608 Flail mower

Customer required at height limiter control circuit to the maxium height of flail mower when working under power lines 

Maximum flail height without height limiter control

Maxium flail height set by height limiter circuit

Boom cylinder control valve 

Height limiter circuit for Kubota KX57-4 excavator

Local plant hire company required height limiter circuits for new machines

sensor unit

valve mounting

key operated control box