Liftmaster K75-37700, CHAIN GUARD AND IDLERS

Liftmaster K75-37700, CHAIN GUARD AND IDLERS

The LiftMaster K75-37700 is a chain guard and idler sprocket replacement kit for select LiftMaster commercial slide gate operators. On heavy-duty slide gates, the chain path and idler sprockets help guide the drive chain and reduce wear while the guard helps shield the chain area from contact and debris.

This kit is commonly listed for LiftMaster SL595U and SL595UL operators. References describe it as including one chain guard and two idler sprockets, with #50 chain referenced in some listings. Because chain pitch, sprocket alignment and guard mounting are all model-specific, this kit should be ordered by part number and parts diagram rather than by appearance alone.

What This Part Does

• Replaces the chain guard and idler sprocket components on compatible SL595 operators.
• Helps keep the drive chain guided through the correct path.
• Helps protect the chain area from debris and accidental contact.
• Addresses worn idlers, damaged guard sections or missing chain protection.

Features & Specifications

Compatible With

Common Compatible Models

• LiftMaster SL595U commercial slide gate operators.
• LiftMaster SL595UL heavy-duty commercial slide gate operators.

Additional Model Families to Verify

• SL595 series operators by parts diagram and chain size.
• Other commercial slide gate operators only if the parts diagram specifically lists K75-37700.

Important Compatibility Notes

Do not use this kit as a universal chain guard or idler set. Chain size, sprocket bore, guard length and mounting points must match.

Also Known As / Related Part Numbers

• K75-37700
• 75-37700
• LIF-K75-37700
• SL595 chain guard and idlers
• SL595U chain guard kit
• SL595UL idler sprocket kit
• LiftMaster chain guard and idler sprockets
• Chain guide kit search variation

Technician Note

Worn idler sprockets often show up as noisy chain travel, uneven chain tracking, metal dust, or sprocket teeth that are hooked or sharp.

Before Ordering Checklist

• Confirm the operator is an SL595U or SL595UL.
• Verify the parts diagram lists K75-37700.
• Check chain size, chain wear and chain alignment.
• Inspect idler bearings, sprocket teeth and guard mounting points.
• Correct gate binding or track issues before replacing drive-chain parts.

Professional Advisory

Keep hands, clothing and tools away from chains and sprockets. Disconnect power and secure the gate before servicing chain-drive components.

Product Questions & Answers

What comes with K75-37700?

Common references list one chain guard and two idler sprockets as the kit contents.

Which operators commonly use this kit?

It is commonly listed for LiftMaster SL595U and SL595UL commercial slide gate operators.

Is K75-37700 for #50 chain?

Some supplier references mention #50 chain applications. Chain size should still be verified against the parts diagram.

Can worn idlers cause noisy gate movement?

Yes. Worn idler sprockets, dry bearings or poor chain alignment can cause noise, vibration and uneven chain travel.

Should I replace the chain at the same time?

Inspect the chain for stretch, corrosion, tight links and worn master links. Replace it if wear is found or if the parts diagram/service condition requires it.