2300 mm Boring Length Foam Boring Machine with 50-80 mm Hole Diameter and 4 kW Motor Power

The C519 is a CNC automatic foam boring machine built for long sponge blocks. Boring length is 2300 mm, hole diameter range is 50-80 mm, motor power is 4 kW, machine weight is 1500 kg and the overall dimension is 6000*1600*2500 mm. The machine is CE certified.

Long blocks are where boring stations lose time. A short-stroke machine bores part of the block, the operator repositions it, and the second bore rarely meets the first on the same centre line. A 2300 mm stroke removes that second set-up, and the hole is cut in one continuous pass.

• Model: C519
• Boring length: 2300 mm
• Hole diameter: 50-80 mm
• Motor power: 4 kW
• Weight: 1500 kg
• Footprint: 6000*1600 mm

1. Set the centre height. Match the spindle height to the block diameter so the bore runs through the middle.
2. Clamp the block. Square the block to the spindle and lock the end stop before the feed starts.
3. Select the cutter head. Fit the head for the required 50-80 mm hole and check it is seated.
4. Start the feed. Let the automatic feed carry the block into the rotating cutter at the set rate.
5. Bore to 2300 mm. The stroke runs the full block length without an intermediate stop.
6. Withdraw and check. Retract the cutter, release the clamps and check the bore on both ends.

Check the bore at the entry and the exit, not only in the middle. A hole that is true at the entry and drifts at the exit points to clamping, not to the cutter.

A long block bored in two set-ups has two chances to go off centre. The second set-up depends on the operator lining the block up again, and a millimetre of error at the chuck becomes a visible step in the middle of the hole. A 2300 mm stroke removes the second set-up entirely, so the bore is one continuous cut.

The gain is not only accuracy. Every re-chucking costs handling time and ties up the operator. With automatic feeding and a full-length stroke, one operator can load a block, start the cycle and prepare the next block while the machine bores.

The 4 kW spindle matters at depth. Foam density rises in the centre of a block, and a spindle that loses torque halfway through the stroke will slow down, tear the bore wall or stall. The C519 holds its cutting speed across the full 2300 mm.

• Accuracy: one continuous bore instead of two set-ups.
• Throughput: automatic feeding frees the operator during the cycle.
• Depth capability: 4 kW keeps the cutter speed steady at full stroke.

• One-pass boring: 2300 mm of stroke covers a full block, so the second set-up disappears.
• Straight centre line: CNC control keeps the bore on axis from entry to exit.
• Less handling: automatic feeding replaces manual pushing and re-alignment.
• 4 kW spindle: steady torque through dense foam at maximum depth.
• Wide block range: handles cylindrical foam and cubic PU sponge on the same table.
• Line integration: the bored block feeds straight into a foam peeling machine.
• CE certified: export-ready guarding and electrics.

• PU sponge factories: centre holes bored in long blocks before peeling.
• Foam peeling lines: pre-processing station ahead of the peeling machine.
• Mattress foam production: long blocks prepared for shaft insertion.
• Cylinder foam production: centre bore through cylindrical buns.
• Foam recycling lines: long reclaimed blocks prepared for further cutting.
• Contract foam cutting: short runs of long blocks bored without a second set-up.

Most boring faults show up as a hole that is off centre or oversized before they show up as a mechanical breakdown. Check clamping, cutter condition and feed speed first, because those three settings cause most of the scrap on a boring station.

Never reach into the boring zone while the spindle is turning or the feed is running. The cutter head is the one part of the machine that cannot be guarded against a hand entering the work area.

Keep the feed table clear of tools before the cycle starts. A loose spanner on the table becomes a projectile once the feed advances the block.

• Check the cutter head fixing before every shift.
• Confirm the block is clamped square before starting the feed.
• Set the stroke limit to the block length, not beyond it.
• Stop the spindle before clearing foam from the bore.
• Record the bore diameter and length on the first block of each batch.

The cutter head is the wear part. A head that is dull tears the bore wall and loads the spindle, so it should be inspected at the end of every shift and replaced before the surface quality drops.

The feed and clamp system needs less attention but more consistency. Check the clamp pressure and the end stop every week, and clean foam dust off the slideways before it packs into the guides.

• Inspect the cutter head for chips and dull edges daily.
• Clean foam dust from the slideways and feed table at shift end.
• Check clamp pressure and end stop position weekly.
• Check drive belt tension and spindle bearing play monthly.
• Grease the feed screw and guide rails on the maintenance schedule.

The machine is shipped in a reinforced export crate with the spindle head and feed table braced for transport. The crate is sized to the 6000*1600*2500 mm machine envelope.

We supply the crating list, lifting points and commissioning checklist with the shipment, and remote support is available while the machine is being set up on site.