LiftMaster K72-18615 Drive Shaft Kit - SL590 and SL595 Slide Gate Operators
The LiftMaster K72-18615 is a drive shaft kit for select heavy-duty SL-series slide gate operators. The drive shaft assembly transfers power through the operator drive system and supports components such as sprockets, bearings, disconnect hardware, and keys. When this area wears, the operator may run but fail to move the gate properly, may slip under load, or may show uneven chain tracking and sprocket wear.
This kit is commonly associated with SL590 / SL595 style industrial slide gate operators and is strongly referenced for SL595GL applications. Because these operators are built in different horsepower, generation, and enclosure configurations, the original parts diagram should be used to confirm shaft length, sprocket layout, disconnect parts, and bearing style.
Compatible With
- LiftMaster SL595GL slide gate operators where K72-18615 is listed
- LiftMaster SL595 / SL595U / SL595UL style applications when confirmed by the parts diagram
- LiftMaster SL590 / SL590GL style drive shaft applications where supported
- Select SL585 / SL585U / SL585UL references only when the parts diagram confirms the same drive shaft kit
- Commercial and industrial slide gate operators using the K72-18615 drive shaft kit
Features and Specifications
| Manufacturer | LiftMaster |
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| Product Type | Drive shaft kit |
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| Part Number | K72-18615 |
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| Application | Slide gate operator drive assembly service |
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| Compatible Operator Type | Commercial / industrial slide gate operators |
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| Compatible Models | SL590 and SL595 style applications where listed |
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| Included Components | Drive shaft kit components may include shaft, bearings, sprocket, disconnect bushing, spring, chain, key, and retaining hardware depending on kit supply |
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| Notes | Verify shaft configuration and related drive hardware before ordering |
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Also Known As / Related Part Numbers
- K72-18615
- 72-18615
- LM-K72-18615
- SL590 drive shaft kit
- SL595 drive shaft kit
- SL595GL drive shaft kit
Technician Note
If the drive shaft failed from gate binding or chain misalignment, replacing the shaft alone may not solve the problem. Check rollers, V-track, chain tension, sprockets, disconnect mechanism, and gate travel resistance.
Before Ordering
- Confirm the exact SL operator model and suffix.
- Compare the kit to the parts diagram for shaft and sprocket layout.
- Inspect related bearings, keys, chain, and disconnect hardware.
- Correct gate rolling or alignment issues before returning to service.
- Retest limits and safety devices after installation.
Professional Advisory
Drive shaft work involves stored mechanical load and heavy gate movement. Secure the gate and disconnect power before service; use a qualified gate technician for industrial slide gate repairs.
Product Questions and Answers
What operators commonly use K72-18615?
It is commonly associated with LiftMaster SL590 and SL595 style slide gate operators, with strong references to SL595GL applications.
What does a drive shaft kit repair?
It repairs the mechanical drive shaft area that transfers power through the slide gate operator drive system.
Can this kit fix a gate that runs but does not move?
It may help if the issue is a worn shaft, sprocket, key, bearing, or disconnect part, but the full drive system should be inspected.
Is this kit the same for every SL-series operator?
No. SL-series suffixes and generations can use different shaft assemblies, so the parts diagram should be checked.
Should chain alignment be checked after installation?
Yes. Chain tension, sprocket alignment, and smooth gate movement should be verified before the operator is returned to service.
