500-2300 mm Bore Foam Drilling Machine with 3-Direction Clamping for 1200-1500 mm Rolls

The C518 bores holes from 500 to 2300 mm long through foam rolls of 1200-1500 mm diameter. Hole diameter is 50-80 mm, motor power is 3.7 kW, machine weight is 2000 kg and the overall dimension is 6500*2000*2500 mm. The machine uses 3-direction clamping and automatic centring.

Roll diameter and bore length are set by the shaft the customer uses, not by the machine. A drilling machine that only covers part of that range forces the plant to refuse orders or to bore in two steps. The C518 covers 1200-1500 mm rolls and 500-2300 mm bores on one set-up.

• Model: C518
• Bore length: 500-2300 mm
• Hole diameter: 50-80 mm
• Sponge diameter: 1200-1500 mm
• Motor power: 3.7 kW
• Weight: 2000 kg

1. Check the roll. Confirm diameter is within 1200-1500 mm.
2. Set the bore length. Set the stroke for the 500-2300 mm range required.
3. Clamp. Three-direction clamping holds the roll on centre.
4. Bore. The cutter advances to the set depth in one pass.
5. Withdraw and release. Retract the tool and open the clamps.
6. Check. Measure the bore at both ends of the roll.

Set the stroke to the roll length before loading. A stroke set longer than the roll risks the cutter exiting through the far face.

A long bore amplifies every error. A cutter that is 0.2 mm off line at the entry is further off at 2300 mm, and a roll that was not clamped square shows a clear difference between the two ends.

That is why clamping and centring come before cutter selection on long work. Three-direction clamping stops the roll moving, and automatic centring sets the axis before the cut starts, so the bore runs straight through the full length.

Roll diameter adds to the problem. A 1500 mm roll has more mass and more surface to hold, and a clamping system that works on a 1200 mm roll can be marginal at the top of the range if it is not designed for it.

• Axis stability: clamping holds the line over 2300 mm.
• Roll mass: 1500 mm rolls held without moving.
• One pass: no re-clamping halfway through.

• Bore range: 500-2300 mm covers short cores and long rolls.
• Roll range: 1200-1500 mm diameter without adapters.
• Hole range: 50-80 mm with interchangeable cutter heads.
• One set-up: full-length bores without re-clamping.
• Stable clamping: three directions hold the roll during the bore.
• Repeatable centre: automatic positioning on every roll.
• CE certified: export-ready guarding and electrics.

• Long rolls: full-length bores up to 2300 mm.
• Short cores: 500 mm bores for compact parts.
• Mixed orders: short and long work on one machine.
• Peeling lines: bored rolls ready for the next step.
• Foam rollers: centre holes for shaft mounting.
• Contract boring: roll sizes handled without re-tooling the line.

Boring faults on a clamped drilling machine are usually set-up faults. Check clamping, centre height and cutter condition before adjusting the machine, because those three cause most rejects.

Keep the full length of the cutter path guarded. On a 2300 mm bore the cutter is exposed for a long distance, and the guard is the only barrier.

Stop the spindle before releasing the clamps. A long roll that shifts while the cutter is still inside will damage both.

• Confirm the roll diameter and length before loading.
• Set the stroke to the roll length.
• Keep the full cutter path guarded.
• Stop the spindle before releasing the clamps.
• Measure both ends of the first roll.

Long bores load the cutter and the spindle for longer periods, so cutter condition matters more than on short work. Inspect the cutter head daily and replace it when the bore surface starts to tear.

The clamping pads should be checked monthly. A worn pad lets a heavy roll settle slightly, and on a 2300 mm bore that shows up as a taper.

• Inspect the cutter head daily.
• Check clamp pads monthly.
• Check the stroke limit setting monthly.
• Check belt tension and bearing play monthly.
• Lubricate slides and guides monthly.

The machine ships in a reinforced export crate with the frame and clamping units braced for transport, sized to the 6500*2000*2500 mm envelope.

The shipment includes the cutter specification, layout drawing and a commissioning checklist, with remote support during installation.