Limit Switch Pneumatic Balancer Series
Knight’s External Limit Switch Balancer incorporates up to two (2) spring loaded rod assemblies, two (2) limit switches and an external retract control to allow the customer the ability to relay an air pilot signal when predetermined heights have been achieved. Mounted to the bracket is a 5-way pneumatics valve that is de-actuated by the position flag as the balancer travels upward. The external retract control is an adjustable safety feature that regulates the balancer’s speed of vertical travel.
The external retract control puts resistance on the thrust bearing allowing the cable or chain to slowly retract into the air balancer to ensure that any runaway load comes to an immediate and complete halt.
When specifying a pneumatic balancer, it is recommended for working loads to use 80% of the operating capacity for lifting applications. This approach compensates for the normal fluctuations within the plant compressed air supply. Working loads include part weight and handling device weight. Balancers are rated at 100 psi [6.8bar] therefore use the following example to calculate exact operating capability.
Formula for pneumatic balancer sizing:
Example: plant air 60 psi, 350 air balancer, 80% load capability (0.60 air supply x 350 lbs. = 210 x .80 = 168 lbs. operating capability).
Single LS Cable Series Model Numbers:
KBA150-076-LS1, KBA150-076-LS2, KBA225-073-LS1, KBA225-073-LS2, KBA225-110-LS1, KBA225-110-LS2, KBA350-073-LS1, KBA350-073-LS2, KBA500-080-LS1, KBA500-080-LS2, KBA700-054-LS1, KBA700-054-LS2
Single LS Chain Series Model Numbers:
KBC150-070-LS1, KBC150-070-LS2, KBC200-110-LS1, KBC200-110-LS2, KBC225-067-LS1, KBC225-067-LS2, KBC350-067-LS1, KBC350-067-LS2, KBC500-080-LS1, KBC500-080-LS2, KBC700-052-LS1, KBC700-052-LS2
Dual Chain (SDS) LS Chain Series Model Numbers:
KBC250S-054-LS1, KBC250S-054-LS2, KBC500S-084-LS1, KBC500S-084-LS2, KBC700S-052-LS1, KBC700S-052-LS2
Reeved LS Cable Series Model Numbers:
RKBA450-036-LS1, RKBA450-036-LS2, RKBA450-33-LS1, RKBA450-33-LS2, RKBA700-036-LS1, RKBA700-036-LS2, RKBA1000-040-LS1, RKBA1000-040-LS2, RKBA1400-027-LS1, RKBA1400-027-LS2
Reeved LS Chain Series Model Numbers:
RKBC400-055-LS1, RKBC400-055-LS2, RKBC450-033-LS1, RKBC450-033-LS2, RKBC700-033-LS1, RKBC700-033-LS2, RKBC1000-040-LS1, RKBC1000-040-LS2, RKBC1400-026-LS1, RKBC1400-026-LS2
Tandem LS Cable Series Model Numbers:
TKBA700-073-LS1, TKBA700-073-LS2, TKBA1000-080-LS1, TKBA1000-080-LS2, TKBA1400-054-LS1, TKBA1400-054-LS2
Tandem LS Chain Series Model Numbers:
TKBC700-067-LS1, TKBC700-067-LS2, TKBC1000-080-LS1, TKBC1000-080-LS2, TKBC1400-052-LS1, TKBC1400-052-LS2
To see examples of custom Balancer applications designed by Knight, visit our Gallery.
Resources
Installation Guides
+
Air Balancer Trouble Shooting Guide (Netherlands)
Air Balancer Troubleshooting Guide-2017
Air Balancer Troubleshooting Guide-2021
Air Connection with Balancer Logic Box
Air Connection with Balancer Manifold
External Safety Retract Control Information
Eye Bolt Safety Cable Installation Instructions
Safety Cable Installation Instructions End Trucks, Hangers, Trolleys
General Information
+Features
- CE Compliant.
- Cable or Chain.
- Hands-Free Operation.
- Standard “Float” Mode.
- Requires Non-Lubricated Clean/Dry Air.
- Max. Balancing Capacity: Up to 1400 lbs. [635kg].
- Standard Travel: Up to 110 in. [2794mm].
Benefits
- Optional High Relieving and Feathertouch Controls.
- Multiple Suspension Kits Available.
Single LS Series Specifications
+Single LS Cable Series Pneumatic Balancers
| Model Number | Rated Capacity lbs. [kg] | Maximum Travel in. [mm] |
|---|---|---|
| KBA150-076-LS* | 150 lbs [68kg] | 76 in [1930mm] |
| KBA225-073-LS* | 225 lbs [102kg] | 73 in [1854mm] |
| KBA225-110-LS* | 225 lbs [102kg] | 110 in [2794mm] |
| KBA350-073-LS* | 350 lbs [159kg] | 73 in [1854mm] |
| KBA500-080-LS* | 500 lbs [227kg] | 80 in [2032mm] |
| KBA700-054-LS* | 700 lbs [317kg] | 54 in [1371mm] |
*When ordering, specify LS1 or LS2 for (1) Limit Switch or (2) Limit Switches.
Single LS Chain Series Pneumatic Balancers
| Model Number | Rated Capacity lbs. [kg] | Maximum Travel in. [mm] |
|---|---|---|
| KBC150-070-LS* | 150 lbs [68kg] | 70 in [1778mm] |
| KBC200-110-LS* | 200 lbs [91kg] | 110 in [2794mm] |
| KBC225-067-LS* | 225 lbs [102kg] | 67 in [1701mm] |
| KBC350-067-LS* | 350 lbs [159kg] | 67 in [1701mm] |
| KBC500-080-LS* | 500 lbs [227kg] | 80 in [2032mm] |
| KBC700-052-LS* | 700 lbs [317kg] | 52 in [1320mm] |
Dual Chain (SDS) LS Series Specifications
+Dual Chain (SDS) LS Series Pneumatic Balancers
| Model Number | Rated Capacity lbs. [kg] | Maximum Travel in. [mm] |
|---|---|---|
| KBC250S-054-LS1 | 250 lbs. [113kg] | 54 in. [1371mm] |
| KBC250S-054-LS2 | 250 lbs. [113kg] | 54 in. [1371mm] |
| KBC500S-084-LS1 | 500 lbs. [226kg] | 84 in. [2133mm] |
| KBC500S-084-LS2 | 500 lbs. [226kg] | 84 in. [2133mm] |
| KBC700S-052-LS1 | 700 lbs. [317kg] | 52 in. [1320mm] |
| KBC700S-052-LS2 | 700 lbs. [317kg] | 52 in. [1320mm] |
Reeved LS Series Specifications
+Reeved LS Cable Series Pneumatic Balancers
| Model Number | Rated Capacity lbs. [kg] | Maximum Travel in. [mm] |
|---|---|---|
| RKBA450-036-LS* | 450 lbs [204kg] | 36 in [914mm] |
| RKBA450-033-LS* | 450 lbs [204kg] | 33 in [818mm] |
| RKBA700-036-LS* | 700 lbs [318kg] | 36 in [914mm] |
| RKBA1000-040-LS* | 1000 lbs [454kg] | 40 in [1016mm] |
| RKBA1400-027-LS* | 1400 lbs [635kg] | 27 in [685mm] |
*When ordering, specify LS1 or LS2 for (1) Limit Switch or (2) Limit Switches.
Reeved LS Chain Series Pneumatic Balancers
| Model Number | Rated Capacity lbs. [kg] | Maximum Travel in. [mm] |
|---|---|---|
| RKBC400-055-LS* | 450 lbs [204kg] | 55 in [1397mm] |
| RKBC450-33-LS* | 450 lbs [204kg] | 33 in [818mm] |
| RKBC700-033-LS* | 700 lbs [318kg] | 33 in [818mm] |
| RKBC1000-040-LS* | 1000 lbs [454kg] | 40 in [1016mm] |
| RKBC1400-026-LS* | 1400 lbs [635kg] | 26 in [685mm] |
Tandem LS Series Specifications
+Tandem LS Cable Series Pneumatic Balancers
| Model Number | Rated Capacity lbs. [kg] | Maximum Travel in. [mm] |
|---|---|---|
| TKBA700-073-LS* | 700 lbs [318kg] | 73 in [1854mm] |
| TKBA1000-080-LS* | 1000 lbs [454kg] | 80 in [2032mm] |
| TKBA1400-054-LS* | 1400 lbs [635kg] | 54 in [1371mm] |
*When ordering, specify LS1 or LS2 for (1) Limit Switch or (2) Limit Switches.
Tandem LS Chain Series Pneumatic Balancers
| Model Number | Rated Capacity lbs. [kg] | Maximum Travel in. [mm] |
|---|---|---|
| TKBC700-067-LS* | 700 lbs [318kg] | 67 in [1701mm] |
| TKBC1000-080-LS* | 1000 lbs [454kg] | 80 in [2032mm] |
| TKBC1400-052-LS* | 1400 lbs [635kg] | 52 in [1320mm] |
Videos
+*Air Balancer – Setting Chain Length
*Applications Compilation
*BPA2113 Hook – Setting Pin into Chain Link
*Pneumatic Rotary Union for Air Balancers
*Standard Balancer VS. External Retract Balancer
Air Balancer Cable Hook Installation
Air Balancer Manifold & Control Handle Installation
Air Balancer Safety Cable Kit Installation
Air Balancer to Rail Installation
Air Balancer Trolley Installation
