Knight Global Dual SDS LS Chain Limit Switch Pneumatic Balancer Series - KG KBCS
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)
Features:
- CE Compliant
- Hands-Free Operation
- Standard "Float" Mode
- Requires Non-Lubricated Clean/Dry Air
Benefits:
- Optional High Relieving and Feather touch Controls
- Multiple Suspension Kits Available
- When ordering, specify * LS1 or LS2 for (1) Limit Switch or (2) Limit Switches
Specifications:
| Model Number |
Rated Capacity lbs. [kg] |
Maximum Travel in. [mm] |
| KBC250S-054-LS* |
250 lbs [113kg] |
54 in [1371mm] |
| KBC500S-84-LS* |
500 lbs [226kg] |
84 in [2133mm] |
| KBC700S-52-LS* |
700 lbs [317kg] |
52 in [1320mm] |
Digital Assets:
