Free on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.
Linear Gate Motor Replacement: The Roswell Owner’s Guide
We stock and install Linear-compatible gate motor replacements for Roswell properties, with most swing-gate and slide-gate motor swaps running $890-$1,650 installed depending on the operator series and whether the existing mounting bracket and control board are reusable. Same-day replacement is available when we confirm your model by phone before dispatch. Most Roswell homeowners realize their Linear motor has failed when the gate stops mid-travel on hot afternoons, reverses without obstacle, or clicks at the control box without moving the arm at all.
Which Linear Models This Applies To
Linear gate operators fall into distinct series, and the replacement motor must match both the mechanical footprint and the control logic. We regularly replace motors in the Linear Actuator (LA) series (LA-500, LA-550, LA-850) for residential swing gates, the Linear Pro Access slide-gate line (SL-100, SL-150, SL-200), and the older Linear HSLG and HCT heavy-duty commercial operators still found on estate properties off Woodstock Road and near the historic district.
To identify your motor, check the aluminum data plate riveted to the operator housing, not the remote or keypad. The plate lists the model number, serial prefix, and manufacturing date code. For LA-series swing arms, measure the extended length (typically 18″, 24″, or 36″) and note whether the bracket uses the older two-bolt or newer four-bolt pattern. The Pro Access SL-150 and SL-200 share the same motor frame but different gear reductions, so swapping between them without verifying the worm-gear ratio will cause limit-switch errors within the first cycle.
We carry both OEM Linear motors and quality aftermarket equivalents from US Automatic and Ghost Controls where the specification matches. For Roswell’s mix of 1990s estate gates and newer subdivisions, aftermarket motors often make sense on discontinued Linear models, but we won’t install one without documenting the compatibility in writing first.
Signs Your Linear Gate Motor Replacement Is Failing

- The gate stalls under load but runs fine manually. The Linear motor’s start capacitor has degraded or the armature windings are overheating. In Roswell’s July-August heat, we see this weekly on south-facing operators with poor ventilation.
- Audible clicking from the control box, no arm movement. The motor is receiving voltage but the internal centrifugal switch or thermal cutoff has tripped. On LA-series units built before 2015, this often means the motor’s end-of-life, not just a bad relay.
- Gate reverses randomly or stops short of the limit. The motor’s encoder or mechanical limit cam is slipping, sending false position data to the Linear control board. This mimics a safety-eye problem but persists even with the photo-eye bypassed.
- Intermittent operation, worse after rain. Water intrusion at the motor housing seal has corroded the brush holders or commutator. We see this on slide-gate operators in Roswell’s lower drainage areas where splash-back hits the motor housing.
- Burning smell or scorched wiring at the operator. The motor is drawing excessive amperage, usually from seized bearings or shorted windings. Continuing to cycle it risks damaging the Linear control board, which costs more than the motor itself.
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AfterReplacement Cost & What’s Included
| Service Component | Typical Range in Roswell |
|---|---|
| Linear motor unit (OEM or verified aftermarket) | $420-$780 |
| Labor: remove, match, install, test | $320-$520 |
| Mounting bracket replacement (if corroded or wrong pattern) | $85-$150 |
| Control board reprogram or replacement (if damaged by motor fault) | $180-$340 |
| Most common total installed | $890-$1,650 |
The price spread depends on three factors: whether your existing Linear model is current or discontinued, whether the mounting hardware is reusable, and whether the motor failure damaged the control board or limit switches. We quote the full installed price in writing before any work starts, under Haven Standard Clause 1. That written price includes the motor, labor, testing, and the 365-Day Done Right Promise. If the control board needs replacement too, we flag it during the phone triage and include it in the same written quote, not as a surprise add-on.
Every replacement leaves a documented photo record: the old motor’s data plate, the new motor’s serial number, the limit-switch settings, and the final amperage draw reading. You get a copy; we file the original.
DIY or Call Us?

There’s a safe middle ground here. A homeowner can verify the model number, check the breaker, and confirm the manual release works. That’s useful information to give us over the phone.
What goes wrong with DIY motor replacement on Linear operators: the arm is under spring tension in the closed position, the limit switches must be set within 2 degrees of travel to prevent over-run, and the control board stores obstacle-force calibration that resets when motor amperage changes. We’ve been called to Roswell jobs where a well-intentioned replacement ran the gate into the stop post because the limit cam wasn’t indexed to the new motor’s shaft keyway. The resulting damage cost more than our original quote would have.
We carry Linear-compatible motors on the truck for confirmed models. Call (706) 928-9815, read us the data plate, and we’ll tell you whether we’re bringing an OEM unit or a verified equivalent. Name what you found. Name what it costs. Name what you left behind.
FAQs
Most Linear residential motors last 8-14 years in Roswell’s climate, with the lower end coming from operators in full sun without shade or ventilation. The summer heat cycles and occasional freeze-thaw stress on slide-gate racks accelerate brush and bearing wear. Call (706) 928-9815 if yours is past year seven and showing intermittent symptoms - catching it early usually saves the control board.
Sometimes. If the issue is a failed capacitor, worn brushes, or a seized bearing, we can repair in place for less than replacement cost. But if the armature windings are burned or the housing seal has leaked corrosion into the field coils, repair exceeds replacement cost and we recommend a new motor with a fresh warranty. We diagnose this on-site and give you both options in writing before proceeding.
A straightforward Linear motor replacement takes 90-150 minutes including removal, installation, limit-switch calibration, and safety testing. If the mounting bracket or control board also needs work, plan on 2.5-3.5 hours. We schedule by the job, not by the hour, so the price doesn’t change if something takes longer than expected.
We stock replacement motors for the most common Linear series - LA-500 through LA-850 swing arms, SL-100 through SL-200 slide operators - on our Roswell service van. For discontinued models or the heavy-duty HCT series, we confirm compatibility and source within 24-48 hours. We don’t schedule the appointment until we have the right part in hand.
Vance Gate Repair Roswell is an independent service provider and is not affiliated with Linear LLC. We also stock parts for LiftMaster, Mighty Mule, and Ghost Controls operators.
Written by Adrian Vance, Owner, Vance Gate Repair Roswell at Vance Gate Repair Roswell, serving Roswell and nearby areas.





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