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).

General Information

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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

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Cable LS Pneumatic Balancers

Model Number Rated Capacity lbs. [kg] Maximum Travel in. [mm]
KBA100-028-LS 100 lbs [45kg] 28 in [711mm]
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]

Chain LS 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]

Reeved LS Series

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Reeved LS Pneumatic Balancers

Model Number Rated Capacity lbs. [kg] Maximum Travel in. [mm]
RKBA450-036-LS 450 lbs [204kg] 36 in [914mm]
RKBA450-33-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]

Reeved LS Chain 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

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Tandem LS Cable 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]
TKBA1400-052-LS 1400 lbs [635kg] 54 in [1371mm]

Tandem LS Chain 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]

Pneumatic Controls

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Videos

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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

Accessories

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Load Trolley

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Safety Cables

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