Gorelocker SBEM‑1250

Specifications, applications and operation

Specification breakdown. The Gorelocker SBEM‑1250 requires 4 kW + 120W cooling fan, hydraulic oil 70 L, at a forming speed of 120 m/min, covering diameters from Φ100–Φ1250 mm, black steel 0.4–1.5 mm, galvanized steel 0.4–1.5 mm, stainless steel 0.4–1.0 mm, aluminum 0.4–1.5 mm, flange size 5 mm, 7.5 mm, 10 mm, and weighs approximately 750 kg, with overall dimensions of 2650×800×1000 mm, requires 380V / 50Hz / 3PH.

Typical applications. Gorelockers (also called elbow machines) join the formed segments of round duct fittings — elbows, reducers, tees and laterals — using a gore lock seam that can be sealed to high pressure ratings. Round duct fabricators need at least one gorelocker for every spiral tubeformer they run, since fittings typically account for 20–30% of finished round duct by surface area and have to be made from segments rather than continuous spiral.

How it works. Gorelockers form the longitudinal seam that joins the segmented panels of a round duct fitting (elbow, reducer, tee). Each fitting is built up from a small number of pre-cut blanks; the gore lock machine joins the panels along their longitudinal edges with a continuously interlocked seam that can be sealed to high pressure ratings. Output is a fully formed fitting ready for flanging or direct installation.

Quality, certification and after-sales. Like every machine in the SBKJ catalogue, this unit is built to ISO 9001:2015 quality management standards and CE marked for European conformity. The factory in Jiangyin, Jiangsu has been operating since 1995 and SBKJ holds 60+ invention and utility patents in HVAC ductwork machinery design. Each machine ships with a 12-month warranty on mechanical and electrical components, lifetime spare-parts availability, and 3–7 days of on-site installation supervision and operator training by an SBKJ engineer. Remote support is available via WhatsApp and email, with engineer response within 12 hours and technical troubleshooting within 72 hours.

Where this fits in your workshop

On a typical spiral duct workshop layout, this machine sits in the helical-forming line between the decoiler and the cut-off saw. Coil stock feeds from a 5-tonne uncoiler with motorised edge guide, runs through the spiral former, and the finished tube is parted off in single-length increments by an inline plasma or shear cut-off. Downstream of the line, finished spiral duct goes either to a flanging cell, a jointer for fitting manufacture, or directly to packing for export. SBKJ supplies all four upstream and downstream stations as matched modules.

Pre-purchase checklist

Use this list when you write the enquiry or when you compare two suppliers. Each line is something an SBKJ engineer will want clarified before quoting.

• Diameter range — confirm both minimum and maximum match your project mix
• Strip width versus material thickness — thin gauge needs a smaller strip than heavy gauge
• Cut-off type — plasma for stainless and aluminium, shear for galvanised
• Output rate at the gauge you actually run most often, not the headline rate
• Strip width changeover time — under 15 minutes is the SBKJ benchmark
• Coil weight capacity matched to your local steel coil supplier

Operator and maintenance notes. The Gorelocker SBEM‑1250 is designed to be run by a single trained operator under normal conditions. Daily checks include lubrication of the forming rolls, inspection of the drive belts and chain tension, and a clean-down of the tool surfaces. Weekly checks add electrical cabinet inspection and a torque check on the main frame fasteners. SBKJ ships every machine with an English operator manual, a maintenance schedule and a recommended two-year spare parts kit. Operator training is included in the 7-day commissioning visit, and a refresher session can be booked at any time within the warranty period.