LiftMaster K77-34846 Chain Hardware Kit for SL575, SL585 and SL595 Slide Gate Operators
The LiftMaster K77-34846 Chain Hardware Kit for SL575, SL585 and SL595 Slide Gate Operators is a replacement service part for the mechanical or control-related assembly inside select LiftMaster SL-series commercial slide gate operators. These operators are typically used on heavier commercial, industrial, gated community, and perimeter access slide gates where accurate travel control and reliable drive hardware are important.
This chain hardware kit is used with select LiftMaster SL575, SL585, and SL595 commercial slide gate operators. It is commonly ordered when the operator chain hardware, mounting hardware, or related slide gate chain connection pieces are worn, missing, rusted, or damaged. Because chain hardware supports reliable gate movement, worn components should be corrected before they damage sprockets, shafts, brackets, or drive components.
On older commercial slide gate operators, the part number matters more than the general model name. A customer may have an SL585 or SL595 operator, but the exact part can change depending on the generation, suffix, UL listing version, and previous repairs. This content uses careful compatibility language because similar-looking LiftMaster kits are not always direct substitutes.
Compatible With
Primary Compatible LiftMaster Models
- LiftMaster SL575
- LiftMaster SL585
- LiftMaster SL595
- LiftMaster SL575UL
- LiftMaster SL585UL
- LiftMaster SL595UL
Common Application Notes
- Commercial slide gate operator service and repair
- Use when the exact part number is shown in the operator replacement parts diagram
- Commonly associated with SL-series perimeter access slide gate operators
- Not a universal kit for all LiftMaster slide gate operators
Features and Specifications
| Manufacturer | LiftMaster |
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| Product Type | Chain Hardware Kit |
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| Part Number | K77-34846 |
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| Application | Commercial slide gate operator replacement part |
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| Compatible Operator Type | LiftMaster commercial slide gate operators |
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| Compatible Model Family | SL575 / SL585 / SL595 slide gate operator family |
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| Compatible Models | SL575, SL585, SL595, SL575UL, SL585UL, SL595UL |
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| Included Components | Refer to kit contents and parts diagram for the specific operator |
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| Notes | Verify by model number, operator generation, and parts diagram before ordering |
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Also Known As / Related Part Numbers
- K77-34846
- 77-34846
- LM-K77-34846
- K7734846
- 77-34846
Technician Note
For commercial slide gate operators, verify the service part by the exploded parts diagram instead of the cabinet label alone. The cabinet model narrows the search, but the internal assembly and operator generation determine the correct replacement.
Before Ordering
- Match the part number to the original component or operator parts diagram
- Confirm the operator model and suffix, such as U, UL, or GL where applicable
- Inspect the surrounding chain, sprockets, shaft, clutch, alarm wiring, and brackets for related damage
- Do not substitute a similar-looking SL575, SL585, or SL595 part without confirmation
- Secure the gate and disconnect operator power before service
Important Ordering Warnings
- Similar SL-series kits may use different shafts, sprockets, brackets, hardware, or wiring
- Operator generation and suffix can affect fitment
- Worn chain, sprockets, bearings, or brackets can damage a new replacement part if not corrected
Professional Advisory
Commercial slide gate repair should be performed with the gate secured and the operator power disconnected. Do not operate the gate with missing covers, damaged chain hardware, disabled alarms, or bypassed safety devices.
Product Questions and Answers
What operator models is K77-34846 used with?
K77-34846 is commonly associated with SL575 / SL585 / SL595 slide gate operator family applications. Use the model list and the operator parts diagram to confirm the correct service part for the exact operator generation.
Is K77-34846 interchangeable with similar SL-series parts?
Do not assume it is interchangeable. SL575, SL585, and SL595 parts can look similar but may differ by shaft, sprocket, clutch, alarm, chain hardware, bracket, or operator generation.
When would this chain hardware kit need replacement?
Replacement may be needed when chain hardware is rusted, bent, missing, loose, damaged, or no longer holding the gate chain securely through normal travel.
Can this part be installed without checking the parts diagram?
No. The parts diagram is the safest way to confirm the part number, especially on older commercial slide gate operators or operators that have already been repaired.
Should the gate be operated if the related safety or alarm system is not working?
No. Do not bypass gate alarms, monitored entrapment protection, photo eyes, safety edges, or required UL325 safety devices. A qualified gate technician should inspect unsafe movement or missing safety protection.
