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Get your free estimateLinear Welding & Fabrication: The Los Angeles Owner’s Guide
If you have a Linear gate operator with a cracked bracket, a snapped arm, or a mount that’s torn loose from the post, we can weld or fabricate a replacement and have it installed most days for $220 to $680 parts and labor, depending on the piece and the metal involved. Most Los Angeles driveways see the failure first as a sagging gate, a grinding noise from the operator, or a gate that opens halfway and stops. If your Linear system has been wheezing through its cycle and the problem isn’t the board or the motor, the welded steel around it is usually the suspect.

Which Linear Models This Applies To
We work on the full spread of Linear swing and slide gate operators you’ll find around Los Angeles: the LSO actuator lines, the Linear SW and SWD series swing operators, and the older APeX and MegaCode-equipped chassis that still show up on a lot of Hillside and Mid-City driveways. The part that breaks is rarely the circuit board. It’s the fabricated steel around it – the mounting plate, the clevis bracket, the pusher arm, or the post bracket. Those pieces were factory-bent and welded to match a specific operator’s throw distance and mounting geometry, and a universal bracket from a hardware store won’t line up.
Here’s the compatibility gotcha we see regularly in Los Angeles: the Linear LSO50 and LSO75 actuator arms look nearly identical on a parts diagram, but the LSO75 uses a larger diameter tube and a thicker clevis mount, and swapping them changes the travel range enough that the gate won’t fully seat against the close stop. When you order a fabricated replacement from us, we match the arm to the motor’s stroke length, the post-to-gate measurement, and the bracket bolt pattern, not just the model number on the sticker. For most homeowners, a quality OEM-equivalent fabricated bracket in mild steel, powder coated, runs about half what a new operator assembly costs and outlasts the original by years.
Styles & brands we work with




Signs Your Linear Welding & Fabrication Is Failing
- Visible cracking at the weld joint or heat-affected zone. Factory Linear brackets are often MIG-welded mild steel, and years of torque cycles in Los Angeles sun and occasional rain create stress fractures right where the weld bead meets the parent metal. Once you see a hairline crack, it’s only a matter of weeks before it propagates through.
- The gate sags or drags at the free end while the opener still runs. That’s usually a torn or stretched mount where the operator bracket bolts to the gate frame. The motor keeps pushing, but the gate’s angle changes and the wheels bind.
- Loud rattling or banging at the start or finish of each cycle. Slack in a fabricated arm or linkage translates each direction change into impact loading on the bolt holes and welds, which widens them over time.
- The operator runs but the gate barely moves, then the clutch kicks out. A failed arm or bracket lets the motor turn without transmitting full force, which wears out the internal gears and limit switches before you even notice the external part is gone.
- Rust stains running down from the bolt heads or weld points. In coastal Los Angeles neighborhoods like Playa del Rey or San Pedro, salt air will eventually find every unsealed weld. The stain is the early warning that the bracket is thinning from the inside out.
See the difference
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AfterReplacement Cost & What’s Included
For a typical Linear swing-gate owner in Los Angeles, most fabricated bracket and arm replacements land between $220 and $480 installed, including the new steel, the welding or machine work, powder coating, and the labor to remove the old piece and mount the new one. Larger jobs – a complete fabricated frame repair, a bent operator pedestal, or reinforcing the gate itself where the operator attaches – run $480 to $680 or more depending on how much steel has to be cut out and replaced.
What drives the range is the metal thickness, whether we’re building a new arm from scratch or repairing the existing one, and how much disassembly the operator needs to access the failed part. Every quote we give in Los Angeles is written down before work begins, and the price includes the finished part, the labor, haul-away of the old steel, and a written 365-Day Done Right Promise on the repair. If it fails inside that year, we return and fix it at no charge – no pro-rating, no parts-only reimbursement.
DIY or Call Us?
You can absolutely identify the problem yourself. Look at where the operator attaches to the gate and the post. If you see cracking, rust stains, or movement when the gate cycles, you’ve found the issue. You can also measure the arm tube diameter and the bolt-center spacing and call us with those numbers – tell me what the gate is doing, or not doing, and I’ll give you a real number before I even pull out of the driveway.
What you shouldn’t do is weld those brackets yourself. A Linear swing operator is under spring and motor tension, and a weld that fails at the wrong moment can send the gate moving under power. We’ve also repaired our share of homeowner welds that were structurally fine but wrong in geometry – the gate cycled but the limit switches couldn’t be set. For a few hundred dollars, the safest route is a trained welder who knows Linear mounting geometry. Call (213) 322-0062.
FAQs
A factory Linear bracket or fabricated arm typically lasts 8 to 15 years in Los Angeles, depending on exposure, cycle count, and whether the original install was done with proper reinforcement. Coastal properties in areas like Marina del Rey or Long Beach usually lose a few years to salt corrosion, while inland neighborhoods with heavier automation cycles can wear out the linkage faster. Ours are built from thicker steel than the factory pieces and painted or powder coated, so most will outlast the original. Call (213) 322-0062 for a straight answer on your specific setup.
Yes, if the crack is caught early and hasn’t propagated into the bolt holes, we can grind it out and reweld it, often for $120 to $200 less than full replacement. If the crack runs through a mounting hole or the steel is rusted thin, repair is a temporary patch and we’ll tell you that before taking the job. Either way we always write the price down first and stand behind it for a full year.
Most Linear bracket and arm replacements are done in one visit of 2 to 4 hours, including removal, fabrication or fitting, installation, and a full cycle test with the limit switches reset. If we have to build a custom arm from scratch, we may need to return with the finished piece in a day or two. Call (213) 322-0062 and we’ll give you a real arrival window, not a four-hour stretch of wondering.
We keep a rolling stock of the most common Linear swing and slide brackets, arms, and mounting plates in our Los Angeles service vehicles, including the LSO-series clevis mounts and SW-series post brackets. If your specific piece isn’t on the truck, our in-house fabrication lets us make it locally rather than waiting for a factory shipment. We also stock replacement parts for LiftMaster, Mighty Mule, and Ghost Controls operators if the failure turns out to be somewhere else in the system.
Portcullis Gate Repair Los Angeles is an independent service provider and is not affiliated with Linear or the Nice/Nortek group. We work on Linear equipment because we know the line, not because we sell it for them.
If your Linear gate is making noise, moving in slow motion, or pulling away from its mount, call (213) 322-0062. We’ll give you a real price over the phone, show up when we say we will, and put the guarantee in writing – the same standard Dean Prescott has held this Kingswell company to since 2008.
Written by Dean Prescott, Owner & Lead Gate Technician, Portcullis Gate Repair Los Angeles at Portcullis Gate Repair Los Angeles, serving Los Angeles and nearby areas.