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KEAA1500 Single Bridge Extension Arm with Air Balancer
Knight Global's KEAA1500 Series Single Bridge Extension Arms enable the operator to extend beyond the working limits of an overhead rail system within a workstation. A Knight Pneumatic/Air Balancer mounts to the extension arm allowing for a controlled lifting and lowering of loads. Knight's KEAA1500 travels inside Knight's RAD4110, RAD6110, or RAD7510 Aluminum Series Rail Systems.
  • Features/Benefits
  • Models
  • Specifications
  • Control Options
  • Accessories
  • Installation Tips
Features/ Benefits
Features
• Single Bridge Configuration.
• Travels inside Knight's RAD4110,
   RAD6110, or RAD7510 Series Rail.
• CE Compliant.
• Various Control Configurations.
• Angular Adjustment in 10° increments.
 (10° UP / 10° DOWN)
• Horizontal Adjustments:
  Up to 6.8 in. [172mm]. in 2.3 in. Increments.
• Requires Non-Lubricated Clean/Dry Air.
• Max Balancing Capacity:
   Up to 700 lbs. [317kg].
• Standard Travel: See Model Tab.
Benefits
• Chain Configuration Available.
• Expands the reach work area of a typical
  balancer.
Controls Sold Seperately (Up/ Down or
  Balance).
Note: Knight recommends the use of high performance, extreme pressure, anti-wear food grade penetrating oil that penetrates and lubricates cable and all types of moving parts.(Lubriplate® 1241 Recommended). Chain models require SAE 50 to 90 EP oil or equivalent machine/gear oil.
Model Information
When specifying an Air Balancer, it is recommended to use 80% of the rated load to determine your load capacity. This approach compensates for the normal fluctuations within the plant compressed air supply. Balancers are rated at 100 psi [6.8bar], therefore use the following example to calculate exact load capability.

Formula for Air Balancer sizing:
Example: plant air 80 psi, 350 air balancer, 80% load capability (0.80 air supply x 350 lbs. = 280 x .80 = 224 lbs. load capability).
KEAA1500 Series Single Bridge Extension Arms
Model Number
Rated Capacity lbs.[kg]
Maximum Travel in.[mm]
KEAA1500-200
200 lbs. [90kg]
110 in. [2794mm]
KEAA1500-350
350 lbs. [158kg]
67 in. [1701mm]
KEAA1500-500
500 lbs. [226kg]
80 in. [2032mm]
KEAA1500-700
700 lbs. [317kg]
50 in. [1270mm]
KEAA1500 Series Specifications
Part
Number
Capacity
lbs [kg]
Travel
in. [mm]
Balancer Length
in. [mm]
KEAA1500-200
200
[90]
110
[2,794]
16.3
[414]
KEAA1500-350
350
[158]
67
[1,702]
16.3
[414]
KEAA1500-500
500
[226]
80
[2,032]
21.5
[546]
KEAA1500-700
700
[317]
50
[1,270]
21.5
[546]
Click on image below to view/print

Knight KEAA1500 Single Bridge Extension Arm with Air Balancer

Knight Global Pneumatic Air Balancer Control Options
Control Options
Diverse Control Options
Knight Global Balancer Controls are designed for precision handling of variable loads through a variety of possibilities. UP/DOWN movements can be achieved by utilizing either a Knight Global standard pendant assembly with color coded thumb levers, or through the natural intuitive motion of a person with the In-Line Feather Touch assembly.

"Zero-Gravity" or "Floating" capabilities are achieved through precision High Relieving regulators, for a smooth and natural feel. These options help when it is difficult locating an object. Knight Global controls are designed with ergonomics and comfort in mind. Handle assemblies have a series of mounting options to help with designing the perfect system.
Internal and External Retract Controls
Knight incorporates a standard internal centrifugal retract control to insure that in the event of a sudden loss of load the cable/chain comes to an immediate and complete halt. Optional external retract control imparts a controlled condition to the spooling of the cable. By adjusting the pressure of the shock, the spool will only be allowed to move in a chosen maximum speed.

Knight Global Air Balancer Internal Retract Control Demonstration

UP/DOWN Position Limit Switch
Knight balancers can incorporate up to (2) two spring loaded rod assemblies and limit switches 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.
Note: Using an Air Balancer with a Position Limit Switch will eliminate the internal safety retract control. Check with your local safety regulations before use and/ or contact a Knight Representative.
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* Due to continuous product development, Knight Global reserves the right to alter product specifications without notice *
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