120x20x30mm Woodworking Machine Spare Parts Steel Feeding Roller for Four Side Moulder

Need a replacement feed wheel for a four-side moulder without ordering through the machine builder? This is the steel feeding roller in φ120 x H20 x φ30 mm: 120 mm outside diameter, 20 mm face width, 30 mm bore, 1.143 kg per piece, keyhole version, chrome plated. Those three numbers are the whole fitment check — measure the worn wheel with a caliper, match 120 / 20 / 30, and it goes onto the shaft the old one came off.

A four-side moulder that starts letting timber slip at the infeed usually has one worn feed wheel, and that one wheel creates three problems at once: a purchase order to the machine builder that runs for weeks, a replacement that lands with the wrong bore or face width, and a moulder standing idle in between.

This steel feeding roller fills that position: φ120 x H20 x φ30 mm — 120 mm outside diameter, 20 mm face width, 30 mm bore, 1.143 kg per piece — a woodworking machine spare for four-side moulders.

The rim is milled with teeth in two staggered rows, so the wheel bites into the timber instead of skating over it, and the body is steel rather than moulded polyurethane. The face carries the keyhole slot and clamping bolt, and the wheel is chrome plated as its anti-rust treatment.

Fitment is a measuring job, not a guess. Read 120 mm on the outside diameter, 30 mm across the bore and 20 mm across the face, then compare the keyhole detail on both wheels. When the numbers agree it goes onto the existing shaft — no spacer, no re-boring.

At 1.143 kg the steel body keeps pressure on the timber through the pass. Keep one spare for the loaded position, and the next worn roller costs a swap rather than a stopped moulder.

On a spare part the numbers are the product, so this list stays with what the spec sheet and photos show.

• 120 mm outside diameter — the diameter this position is cut for, so it sits at the same height.
• 30 mm bore — sized for the shaft the old wheel ran on, so measure before ordering.
• 20 mm face width — the contact face that meets the timber, and the third fitment number.
• Teeth in two staggered rows — the rim in the photos carries a serrated face that grips the board.
• With keyhole — the mounting version on the spec sheet: oblong slot plus clamping bolt.
• Steel body at 1.143 kg — solid steel, not moulded, so the 120 mm diameter holds shape.
• Chrome plated — the anti-rust treatment, so the working face does not arrive rusty.
• One size, one part number — 120x20x30mm carries outer diameter, face width and bore in one string.
• Four-side moulder feed position — listed for CNC machine 4 side moulders, the family that runs this wheel.
• Other sizes on request — the spec sheet says so, so a different diameter can be quoted.

When a feed wheel wears, the shop waits weeks on the machine builder or fits a wheel whose bore is a few millimetres out. A steel wheel that carries its size as the part number takes both off the table.

• The size is the part number. 120x20x30mm states outer diameter, face width and bore, so stores can re-order from the old wheel.
• Measured fit, not a guess. 120 mm, 30 mm and 20 mm settle whether it mounts, and a caliper answers in two minutes.
• Steel in the loaded position. 1.143 kg holds the 120 mm diameter round instead of wearing a flat at the pressure point.
• Chrome, not bare steel. The plating is the anti-rust treatment, so a shelf spare keeps its working face.
• A spare turns a stop into a swap. One wheel on the shelf removes the weeks of waiting for the builder's order.
• You buy the wheel that wears. A feed position takes one 1.143 kg part, not a whole feed assembly.
• Repeat orders stay identical. The part number is the size, so the next wheel arrives at the same 120 x 20 x 30 mm.
• Sizes follow your drawing. Other sizes and shapes are quoted on request, so a non-standard roller is not a dead end.

Only if three numbers match: 120 mm outside diameter, 30 mm bore and 20 mm face width. Pull the worn wheel and check all three with a caliper — if one reading is different, this is the wrong size and another one has to be quoted.

It is the mounting variant listed on the spec sheet, the oblong keyhole slot and clamping bolt visible on the wheel face. Compare that detail with your old wheel before ordering, because two wheels of the same 120 x 20 x 30 mm size can differ exactly there.

Steel. The spec sheet lists a steel feeding roller at 1.143 kg per piece in φ120 x H20 x φ30 mm, so if your machine currently runs a PU wheel in that position, this is a different part rather than a like-for-like swap.

Measure the wheel you are replacing, not the manual. Outside diameter should read 120 mm, bore 30 mm and face 20 mm, and those are the same three numbers printed on this part.

Yes. Chrome plating is the anti-rust treatment on this roller and covers the wheel body and face, including the rim in the product photos.

1.143 kg per piece. The mass sits in the steel body, which is what keeps a 120 mm roller pressing on the timber through a pass instead of riding up over it.

Yes. The 120x20x30mm wheel is one size, and other sizes and shapes are quoted on request — send outside diameter, bore and face width, and the answer comes back against those three numbers.

CNC machine four-side moulders, where it works in the feed position. It is listed under woodworking machinery tools and parts, and it is not a fit for machines built around a different roller diameter.