URS Rotary Limit Switches

URS Rotary Limit Switches

Geared limit switches monitor the number of revolutions to allow for accurate positioning. 2 circuit design allows for a controlled stop in the advance and retract positions. The adjustable cams enable precise positioning of travel limit stops. For increased position control, 4-circuit models are available. Contact sales@uniliftjacks.com for more information.

Rotary Limit Switch Sizing:
To calculate the required number of turns, utilize the following formula:
TL = TPI x Rise TPI - Turns of input shaft for 1 inch of travel Rise - one way travel (in)
Three standard options are available for each tonnage, after determining your required turns select the next highest option from the table on the right. If the required turns or if your UNI-LIFT's load capacity exceeds the values in the selection table please contact sales@uniliftjacks.com.

Example:
20-ton actuator, 8:1 ratio, 72 inches of rise
TPI = 16 | 16 x 72 = 1152 turns | 1152 turns is less than 1440.
Therefore, select a No.1440 series Limit Switch. Switch can easily be mounted in any one of these positions. When ordering a Rotary Switch, please specify right-hand or left-hand and mounting position number.

URS Rotary Limit Switches

Model Number Voltage Switch Series 2 Circuit Temperature Range
URSA11 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA12 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA13 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA21 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA22 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA23 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA31 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA32 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA33 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA41 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA42 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA43 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA51 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA52 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA53 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA81 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA82 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA83 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA101 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA102 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA103 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA151 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA152 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA153 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA201 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA202 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA203 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA251 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA252 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA253 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F
URSA301 15A 115 VAC / 10A 230 VAC 1 (360 maximum turns) -20 F to 150 F
URSA302 15A 115 VAC / 10A 230 VAC 2 (1440 maximum turns) -20 F to 150 F
URSA303 15A 115 VAC / 10A 230 VAC 3 (4320 maximum turns) -20 F to 150 F