Linear Welding & Fabrication Nationwide

Linear Welding & Fabrication: The Sunnyvale Owner’s Guide

Linear welding and fabrication repair in Sunnyvale typically runs $340-$780 for most residential gate arm bracket and hinge restorations, with same-day service when the failure is structural and the gate is stuck open or dragging. We stock Linear-compatible steel stock, hinge pins, and mounting plates on our Sunnyvale service vans, and we match the original weld spec rather than forcing a generic bracket that won’t align with the operator’s torque geometry. Most homeowners notice the problem when the gate starts catching at the same point in its swing, or when a welded joint that held for eight years suddenly cracks after a wet February week in the Santa Clara Valley.

Call (669) 900-1904

Which Linear Models This Applies To

Linear’s residential and light-commercial gate operators use welded mounting hardware across several series, and the bracket geometry changes enough that “close enough” usually means premature failure. We regularly fabricate and weld for Linear ACT-31, ACT-34, and ACT-310 swing-gate arms; LDCO800 and LDCO850 sliding-gate trolley assemblies; and the commercial-grade HSLG and HCT series where the hinge pin takes the full reversing load.

The quickest way to identify your bracket is the stamped model number on the operator housing, plus the mounting plate bolt pattern. Linear ACT-series arms use a 2.5-inch center-to-center bolt spacing on the gate-side bracket; LDCO sliding operators use a wider 3.25-inch pattern that won’t interchange. We fabricate to the original Linear dimension from 11-gauge mild steel or 304 stainless for coastal-adjacent Sunnyvale properties where salt air from the Bay accelerates corrosion at the weld heat-affected zone. OEM Linear weldments are available through distribution but carry a 10-14 day lead time; our fabricated equivalents match the shear and fatigue specs and carry the same 365-Day Done Right Promise.

Signs Your Linear Welding & Fabrication Is Failing

• The gate catches or binds at the same angle every cycle. A cracked weld on the actuator mounting bracket lets the arm shift under load. The operator still runs, but the geometry is wrong and the motor strains against a bind it wasn’t designed for.
• You hear a sharp metallic pop when the gate starts moving. That’s usually a hinge pin weld fracturing. On Linear swing gates near Lakewood Village in Sunnyvale, we’ve found this happens where the original weld didn’t penetrate the full pin diameter, and years of Santa Clara Valley thermal cycling finally opens the crack.
• The arm looks straight but the gate leaf sits crooked. A twisted or fatigued mounting plate transfers rotation into the gate frame instead of pure push-pull. The Linear operator’s limit switch readings will drift because the physical stop position no longer matches the mechanical travel.
• Rust weeps from the weld bead even though the surrounding paint looks fine. Weld heat changes the steel’s crystal structure at the boundary, and that zone corrodes faster. In Sunnyvale’s mild climate this takes years, but once it starts, the cross-section degrades faster than visual inspection suggests.
• The gate operator faults on “obstruction” with nothing in the path. A loose or cracked bracket lets the arm flex enough to trigger the Linear’s internal current-sense overload. The board reads high motor draw as a blocked gate, when it’s actually mechanical slop in the weldment.

Before

After

Replacement Cost & What’s Included

What drives the range: material choice, whether the original bracket can be salvaged as a template, and how much disassembly the Linear operator requires to gain access. Stainless adds roughly 25% for material cost but doubles service life in corrosive microclimates. Every price is written and handed over before we strike an arc, under Haven Standard Clause 1. The weldment carries our 365-Day Done Right Promise; if a crack reopens at the heat-affected zone or a pin loosens, we return and correct it at no charge.

DIY or Call Us?

There’s an honest line here. A homeowner can safely inspect: look for rust streaks at weld beads, wiggle the actuator arm to feel for play at the bracket, and photograph the model label for us. What you shouldn’t attempt is field welding a loaded gate hinge or cutting apart a bracket that’s under spring or operator tension. The Linear actuator stores significant force in its gear train; a bracket that lets go unexpectedly can swing the arm with enough energy to damage the gate or the operator electronics.

We carry a portable MIG/TIG rig and fabricate on-site so the gate doesn’t come off its hinges or sit unsecured overnight. Call (669) 900-1904 and we’ll confirm the Linear model, quote the weldment in writing, and schedule the repair, usually same-day for Sunnyvale calls.

FAQs