Dual Drum “SDS” Balancer
Knight has designed a “Dual Drum” Air Balancer with the patented Safety Drop Stop “SDS” dual chain feature. This type of Pneumatic Balancer is typically used in applications that require the manipulation of an unwieldy or large part. Also, a single suspension point may not stabilize a lengthy part. Some applications require that the fixture remain square to a part and (2) two hook points prevent fixture rotation.
Having two synchronized spools inside one housing, the Dual Drum Balancer offers added balance to awkwardly weighted or shaped loads by lifting and balancing from two suspension points.
This balancer comes equipped with an external retract control. Limit switches can also be ordered as an option.
Pneumatic Balancers are used in applications where a “float” condition is beneficial. Float allows for the hands-free final positioning of an object. The up/down speed of an pneumatic balancer is quicker when compared to a hoist and allows for a “feathering” operation when locating the load. The pendant controls are ergonomically designed incorporating color-coded thumb levers.
Knight chain balancers use a custom grade 80 lifting chain specially treated to increase the life of the chain by up to 300% over standard grade 80 lifting chain.
DKBCS Series Model Numbers:
DKBC500S-078 & DKBC700S-048
To see examples of custom Balancer applications designed by Knight, visit our Gallery.
General Information
+Features
- CE Compliant Upon Request.
- Redundant chain design for safe operation:
- Load Chain: Carries the load.
- Safety Chain: Rides along for redundancy.
- Hands-Free Operation.
- Standard “Float” Mode.
- External Retract Control.
- Requires Non-Lubricated Clean/Dry Air.
- Max Balancing Capacity: Up to 700 lbs. [318kg].
- Standard Travel: Up to 78 in. [1981mm].
Benefits & Options
- Optional Limit Switches (1 or 2)
- Optional High Relieving and Feathertouch Controls.
- Multiple Suspension Kits Available.
DKBCS Series Specifications
+DKBCS Series Specifications
Model Number | Capacity lbs. [kg] | Travel in. [mm] |
---|---|---|
DKBC500S-078-33-EX | 500 [227] | 78 [1981] |
DKBC500S-078-33-LS1 | 500 [227] | 78 [1981] |
DKBC500S-078-33-LS2 | 500 [227] | 78 [1981] |
DKBC500S-078-38-EX | 500 [227] | 78 [1981] |
DKBC500S-078-38-LS1 | 500 [227] | 78 [1981] |
DKBC500S-078-38-LS2 | 500 [227] | 78 [1981] |
DKBC700S-048-33-EX | 700 [318] | 48 [1219] |
DKBC700S-048-33-LS1 | 700 [318] | 48 [1219] |
DKBC700S-048-33-LS2 | 700 [318] | 48 [1219] |
DKBC700S-048-38-EX | 700 [318] | 48 [1219] |
DKBC700S-048-38-LS1 | 700 [318] | 48 [1219] |
DKBC700S-048-38-LS2 | 700 [318] | 48 [1219] |
Videos
+*Dual Drum SDS Air Balancer

*Pneumatic Rotary Union for Air Balancers

*Standard Balancer VS. External Retract Balancer

Accessories
General
+- 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.
- 360 degree rotation.
- Steel Construction.
- Connection for Safety Chain.
- Quick and Secure Connection.
- Steel Construction
- Measures Knight 4mm & 5mm Galvanized Chain Wear.
Load Trolley
+- Recommended for the optimum Balancer 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.
- Travels on a W-Beam, I-Beam and Patented Track.
- Steel Wheels.
- Double-shielded wheel bearings keep dirt out, and do not require lubrication.
- Travels on a S-Beam.
- Steel Wheels.
- Double-shielded wheel bearings keep dirt out, and do not require lubrication.
Safety Cables
+- 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).
- (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).
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)