Milling-type chamfering for plate edges
Milling-type plate beveling machines produce clean V, Y, X and K bevels on carbon, stainless and clad plate. Self-propelled and stationary models cover hull-section prep, structural welding seats and pressure-vessel edge preparation — no slag, no oxide layer, no rework before welding.
Twin-head plate edge miller that bevels the top and bottom of the edge in the same pass — X and K weld preps on 4 – 55 mm plate without turning the plate over. The top head sets 0° – 45°, the bottom 0° – 60°, and each cuts bevel width up to 40 mm; at 0° it mills a straight edge for trimming. Built for medium to thick plate in production shops.
550 kg stationary edge miller with independent dual motors — 4 kW main spindle and 750 W feed drive. Sized between the benchtop DZ class and the floor-standing heavy hydraulics; the production-shop standard for batch edge prep on plate 2 – 40 mm with up to 25 mm bevel width.
Compact self-propelled plate edge miller with a 0° – 90° bevel angle range. Twin 3 kW cutting motors take bevel width up to 100 mm (30 mm per pass) on 8 – 100 mm plate at Ra 3.2 – 6.3 μm — milling-machine speed in a machine that moves easily around the shop.
Automatic walking plate edge miller with two Ø 80 mm cutter heads, each on its own 4 kW motor. Bevel angle 0° – 90°, up to 35 mm of bevel width per pass and 80 mm in total on 8 – 100 mm plate, at Ra 3.2 – 6.3 μm — in a compact machine that moves easily around the shop.
Self-propelled plate edge miller with a flip-over body — bevels the top of the edge, then turns 180° to bevel the underside, so X and K weld preps on 4 – 80 mm plate never need the plate turned over. Bevel angle 0° – 75°, bevel width up to 70 mm, plus 0° side milling of the plate edge.
Dual-motor heavy-duty plate edge miller for thick-wall fabrication — 2 × 3 kW spindles drive cold milling on plate up to 150 mm thick and 90 mm bevel width. Hydraulic lifting on the L variants eliminates manual height adjustment. The standard tool for pressure-vessel, bridge and mining-equipment plate preparation.
Compact stationary edge miller with motorized auto-feed for plate prep on small-to-medium workpieces. Operator pushes the plate into the track — the machine grips, propels and mills a cold V/Y bevel at Ra 3.2 – 6.3 μm surface finish. 80 – 150 kg cast base damps vibration for repeatable cuts across long production runs.
Self-propelled traveling edge miller that clamps onto the plate edge and walks itself along — the standard tool for long-edge weld prep where a stationary machine cannot accept the plate length. Four configurations cover plate 6 – 80 mm thick with V / Y / 90° vertical options.
6 – 9 kg handheld cold edge miller that bevels what stationary and traveling machines cannot reach — inner holes, curved plate edges, nozzle stub-outs and one-off pipe ends. 4-insert carbide cutter, adjustable bevel angle 20° – 60°, up to 15 mm bevel width on the HDL-15A.
Self-propelled cold-shear plate beveler that uses a rotating shear disc instead of a milling cutter — beveling speed 2.0 – 3.0 m/min, roughly 4 – 8× faster than carbide-insert milling on equivalent plate. Lowest consumable cost in the line (one wear disc, no inserts). Standard tool for high-volume V-bevel preparation in steel-construction and shipbuilding.
Portable line boring system that restores worn pivot bores, stern tubes, turbine casings and pin holes in situ — without disassembly. Modular boring bar mounts in the workpiece, drive head spins it through aligned bores to original tolerance. Pairs with an automatic bore welder for a "weld-and-bore" single-setup repair.
18 kg hand-propelled cold edge miller for straight plate edges. The agile entry-level option for one-off prep, on-site repair and training — rolls along the plate edge on wheels, operator pushes the handle. 1.1 kW motor, 1 – 15 mm bevel width, 30° – 60° angle adjustable.
Plate weld prep splits into two methods — rolling shear and edge milling — and most shops pick the wrong one. Rolling shear is fast on long runs of one angle in mild steel; edge milling handles every other case, including alloy and variable angles.
The KBM rolling-shear plate beveler is the right answer for high-volume mild-steel work; the GL traveling edge miller covers everything else.
Shipyard plate butts mean long seams, predictable wall, repetitive geometry — and welding from both sides where access allows. That makes X and K (double-sided) bevels cheaper than single-V on anything above ~20 mm wall.
For the long-plate run the GL traveling edge miller walks the cutter along clamped plate; the DMM hydraulic heavy edge miller handles the thick stuff.
Vessel longitudinal seams above 25 mm wall are where J-prep and compound bevels save real money — see V vs J prep economics. The constraint is holding the J radius and land consistently on long shell plates.
That rules out grinder prep entirely (see cold beveling vs grinding) and pushes the job onto a heavy edge miller — the DMM-900 vertical edge miller is sized for this thickness band.
Not every plate prep is shop work. For field repair, on-board ship modifications, or short structural plate, a handheld machine is the right scale.
The HDL handheld edge miller and the SKF-15 hand-propelled plate beveler cover the range. Bring plate thickness, target bevel angle and a photo of the typical work to the quote form and we will size the machine for what the crew actually carries.
Not all on-site machining is edge work. Worn pins, stern tubes, turbine casings and excavator pivot bores — anything cylindrical that has gone oversize in service — are restored in place by the portable line-boring machine: clamp the machine to the workpiece and bore the aligned holes back to tolerance without disassembly.
The decisive specs are bar rigidity (sets the depth-of-cut you can take without chatter) and how cleanly the bar can be set concentric to the original bore axis. Skimping on either is the difference between a bushing that lasts a year and one that fails again before the next outage. It pairs with an automatic bore welder for a single-setup weld-and-bore repair.
| Series | Plate thickness | Bevel width | Feed | Best for |
|---|---|---|---|---|
| HDL | — | 1 – 15 mm | Handheld | Touch-up, short runs, awkward access |
| SKF-15 | — | 1 – 15 mm | Hand-propelled | Straight edges, one operator, 18 kg |
| DZ | 2 – 50 mm | Up to 20 mm | Benchtop | Small parts brought to the machine |
| DMM-20D | 2 – 40 mm | Up to 25 mm | Tabletop feed-through | Repeat production on small plate |
| KBM | 5 – 45 mm | 16 / 26 mm single pass | Self-propelled shear | Long runs of one angle in mild steel |
| GL | 6 – 80 mm | Up to 70 mm | Self-propelled milling | Long plate edges, machine goes to the work |
| DMM-900 | 8 – 100 mm | Up to 100 mm | Self-propelled milling | Steep angles and vertical end facing |
| DMM-90X | 4 – 80 mm | Up to 70 mm | Self-propelled, flip-over body | X/K preps — flips 180° instead of the plate |
| DMM-900X | 8 – 100 mm | Up to 80 mm | Self-propelled, dual cutter head | Wide bevels, up to 35 mm per pass |
| DMM-1232 | 4 – 55 mm | Up to 40 mm per face | Twin head, plate or machine feed | X and K preps without turning the plate |
| DMM hydraulic | 6 – 150 mm | 70 – 90 mm | Self-propelled milling | The heaviest plate in the shop |
This decides the machine class before anything else. Up to 15 mm a handheld or hand-propelled unit is enough. Up to 25 mm, a benchtop or tabletop machine. Above that you are into self-propelled milling.
Plate comes to the machine — DZ benchtop or DMM-20D tabletop. Faster per part, and the operator stays in one place.
Machine goes to the plate — GL or DMM-900 self-propelled millers run against 6 m and 12 m plate without re-fixturing.
Rolling shear is faster and cheaper on long runs of one angle in mild steel up to about 12 mm. Milling handles everything else — alloy and stainless, variable angles, heavy wall, anything that has to pass code inspection. Most fabrication shops should own a miller, not a shear. Worked through in rolling shear vs edge milling.
X and K joints need both faces bevelled. Two ways to get there: flip the machine over with the DMM-90X, or cut both faces at once with the DMM-1232. Either beats turning the plate over — see double-sided plate beveling for when X-prep starts paying for itself.
The hydraulic heavy edge miller takes plate to 150 mm. Above that, send the drawing — heavy-section prep is usually a fixture question as much as a machine one.
Send us your spec sheet, pipe schedule, or drawing — our engineers reply with pricing, lead time, and recommended models.
