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Extension Arm Pneumatic Balancer Arm Series
Knight’s Extension Arm Pneumatic Balancer Arm Series enables the operator to extend beyond the working limits of an overhead rail system within a workstation. Knight’s Pneumatic Balancer mounts to the extension arm allowing for a controlled lifting and lowering of loads. The KEAA2000 and KEAA2500 arms travel inside Knight’s RAD4110, RAD6110, or RAD7510 Aluminum Series Rail Systems.
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).
Contact a Knight representative for more information.
To see examples of custom Pneumatic Arms designed by Knight, visit our Gallery.
General Information
+Features
- Single or Dual 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 Specifications Tab.
Note: Knight recommends the use of high performance, extreme pressure, anti-wear food grade penetrating oil (Lubriplate® 1241 Recommended) that penetrates and lubricates cable. For chain (SAE 50 to 90 EP oil or equivalent machine/gear oil) is Recommended.
Benefits
- Chain Configuration.
- Expands the reach work area of a typical balancer.
- Allows for 360° rotation.
- Controls Sold Separately (Up/ Down or Balance).
Specifications
+Single Bridge Extension Arm
|
Part
Number |
Capacity
lbs [kg] |
Travel
in. [mm] |
Balancer Length
in. [mm] |
|
KEAA2500-200
|
200 [90]
|
110 [2,794]
|
16.3 [414]
|
|
KEAA2500-350
|
350 [158]
|
67 [1,702]
|
16.3 [414]
|
|
KEAA2500-500
|
500 [226]
|
80 [2,032]
|
21.5 [546]
|
|
KEAA2500-700
|
700 [317]
|
50 [1,270]
|
21.5 [546]
|
Dual Bridge Extension Arm
|
Part
Number |
Capacity
lbs [kg] |
Travel
in. [mm] |
Balancer Length
in. [mm] |
|
KEAA2000-200
|
200 [90]
|
110 [2,794]
|
16.3 [414]
|
|
KEAA2000-350
|
350 [158]
|
67 [1,702]
|
16.3 [414]
|
|
KEAA2000-500
|
500 [226]
|
80 [2,032]
|
21.5 [546]
|
|
KEAA2000-700
|
700 [317]
|
50 [1,270]
|
21.5 [546]
|
Videos
+*Applications Compilation
*Extension Arm – Hood Lift Assist
Air Balancer Manifold & Control Handle Installation
Air Balancer Safety Cable Kit Installation
Air Balancer to Rail Installation
Air Balancer Trolley Installation
Core Casting Lift Assist
Accessories
General
+
- Steel Construction
- Measures Knight 4mm & 5mm Galvanized Chain Wear.
- 360 degree rotation.
- Steel Construction.
- Connection for Safety Chain.
- Quick and Secure Connection.
- 360 degree rotation.
- Forged Alloy Steel – Quenched and Tempered.
- Connection for Safety Chain.
- Nylon Safety Cover.
- Quick and Secure Connection.
- (Carbon Steel) Crosby® Bullard Hook w/ Self Closing Gate.
- Quick and Secure Connection
- 360 degree rotation.
Load Trolley
+
- Fiberglass filled High Impact Nylon Wheels.
- Side Guide Rollers with integrated bearings.
- Double-shielded wheel bearings keep dirt out, and do not require lubrication.
- Min/ Max Continuous Service Temp at 100% load: -20 degs. F to 248 degs. F.
- Fiberglass filled High Impact Nylon Wheels.
- Side Guide Rollers with integrated bearings.
- Double-shielded wheel bearings keep dirt out, and do not require lubrication.
- Min/ Max Continuous Service Temp at 100% load: -20 degs. F to 248 degs. F.
- Fiberglass filled High Impact Nylon Wheels.
- Side Guide Rollers with integrated bearings.
- Double-shielded wheel bearings keep dirt out, and do not require lubrication.
- Min/ Max Continuous Service Temp at 100% load: -20 degs. F to 248 degs. F.
Safety Cable
+
- (4) Crosby® Saddle Clamps
- (2) Cable Thimbles
- (2) Eye Bolts
- (1) Safety Cable made of a carbon steel 7 (strand) x 19 (wires) Galvanized Wire Rope (GWR).
- (2) Copper Oval Sleeves
- (2) Cable Thimbles
- (1) Safety Cable made of a carbon steel 7 (strand) x 19 (wires) Galvanized Wire Rope (GWR).
- Used as Knight’s standard safety cable kit.
- (4) Crosby® Saddle Clamps
- (2) Cable Thimbles
- (1) Safety Cable made of a carbon steel 7 (strand) x 19 (wires) Galvanized Wire Rope (GWR).
Pneumatic Controls
+
- Air logic box and bracket.
- Logic box to balancer air bracket connection hose fitting
- Manifold to Balancer Air Bracket Connection to Hose Fitting.
- Air Manifold and Control Handle.
- Supports a constant weight at zero gravity.
- Ideal for balancing fastening tools.
- Balances a single object without requiring the need for a separate pendant control.
- Allows for a hands free operation.
- Does not allow for variances in weights.
- Assists in increasing the air volume.
- Exhausts the air in a more efficient manner.
- BCS2090 – Loads under 250 lbs. [113kg].
- BCS2322 – Loads UP TO 500 lbs. [227kg].
- Eliminates the need for a separate pendant.
- Allows the operator to control the up and down movements close to the part.
- Horizontal handle (BCS2213)
- Vertical handle (BCS2214)
- Controls (2) different weights at zero gravity.
- Pendant buttons control which balance the operator desires.
- Primarily used in hands free applications where the operator picks up a part and sets it down.
- Dual balance creates a zero gravity for the end effector with or without a part.
- Ergonomic Handle Grip.
- Thumb Lever Guards to protect for inadvertent depressing of control levers.
- (1) BPA9050B Pneumatic Block.
- 2-way valves used for a single acting air balancer or lift assist that is used for up/ down movement.
- Ergonomic Handle Grip.
- Thumb Lever Guards to protect for inadvertent depressing of control levers.
- (1) BPA9050B Pneumatic Block.
- 2-way valves for up/ down movement.
- Ergonomic Handle Grip.
- Thumb Lever Guards.
- Manifold kit included.
