Liftmaster K10-8056M, COUNTERWEIGHT
The LiftMaster K10-8056M is a heavy replacement counterweight used to balance select LiftMaster barrier arm gate operators. Barrier operators rely on proper counterbalance so the drive system is not forced to lift and lower the full weight of the arm on every cycle. When the counterweight is missing, damaged, undersized, or installed for the wrong arm configuration, the operator may run harder than normal, shake during movement, fail to hold balance, or wear mechanical parts faster. K10-8056M is most strongly associated with the LiftMaster BG790 barrier gate operator, and some listings connect it with long arm or 24 foot wishbone arm setups. Because barrier-arm balance depends on arm length, arm hardware, spring/counterweight setup, and operator configuration, this part should be selected by matching the operator model and arm assembly requirements.
Compatible With
Confirmed / commonly listed applications
- LiftMaster BG790 barrier gate operators
- Various LiftMaster barrier arm gate operators where K10-8056M or G658056 is shown in the parts list
- Perimeter Access Solutions barrier arm applications using the matching counterweight
Related application notes
- Commonly referenced with long barrier arm configurations
- Some listings reference use with K65-1208 24 foot wishbone arm applications
- Counterweight fitment depends on arm length, arm style, and operator balance requirements
Also Known As / Related Part Numbers
- K10-8056M
- 10-8056M
- 10-8056
- G658056
- G088056
- 108056
- 088056
- LiftMaster K10-8056M
- Counterweight for BG790
- Counter weight for 24 foot arm reference
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Barrier gate counterweight |
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| Part Number | K10-8056M |
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| Application | Counterbalance for select LiftMaster barrier arm operators |
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| Compatible Operator Type | BG790 and select barrier arm gate operators |
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| Included Components | Counterweight only unless listing states otherwise |
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| Notes | Balance requirements vary by arm length and configuration |
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Technician Note
A counterweight should be selected as part of the entire barrier arm balance setup. Replacing only the weight without checking the arm, spring hardware, and pivot assembly may not solve a balance problem.
Before Ordering Checklist
- Confirm the barrier operator model, especially BG790 applications.
- Confirm the barrier arm length and arm style before ordering.
- Check whether the installed setup uses a wishbone arm or other long-arm hardware.
- Inspect the pivot, springs, bearings, and gearbox for wear if the arm is hard to move.
- Do not operate a barrier arm with missing or incorrect counterbalance hardware.
Important Ordering Warnings
- Counterweights are not universal across all barrier gate arms.
- An incorrect counterweight can overload the operator or create unsafe arm movement.
- Heavy counterweight installation should be handled carefully to avoid injury or equipment damage.
Professional Advisory
Barrier arm counterweights are heavy and tied directly to the safe movement of the arm. A qualified gate technician should handle balance adjustments, arm support, and final operational testing.
Product Questions and Answers
What does the K10-8056M counterweight do?
It helps balance the barrier arm assembly so the operator drive system is not carrying the full arm load during every cycle.
Which LiftMaster operator is K10-8056M commonly used with?
It is most commonly associated with the LiftMaster BG790 barrier gate operator and select other barrier arm applications.
Is K10-8056M used with 24 foot arms?
Some listings reference use with long or 24 foot wishbone arm configurations, but the arm kit and operator parts diagram should be checked.
What are related part numbers for this counterweight?
Related references include 10-8056M, 10-8056, G658056, G088056, 108056, and 088056.
Can a barrier operator run without the proper counterweight?
It should not be operated that way. Incorrect counterbalance can strain the operator and create unsafe arm movement.
