21 Spindle Line Boring Drill Head 32x21 Woodworking Machine Parts And Tools

A 21-spindle line boring and drill head for woodworking drilling machines, built by Shunhongyu as a drill bits connector for multi-hole boring in a single pass. The 32x21 designation and 21 spindles set the hole count and spacing pattern; confirm both against your machine's line boring setup before ordering. Alignment across 21 spindles is the working requirement, so check spindle spacing, bit shank fit and mounting against your existing head. Ships by DHL, FedEx or UPS from China. Send your machine details, spindle spacing and bit shank size with the enquiry.

Line boring goes wrong when 21 holes drift out of spacing: shelf pin rows step, dowel joints pull tight on one end, hinge plates sit crooked. A head that will not hold alignment across all 21 spindles turns one setup into rework on every panel. The failure shows up as scrap, not as a machine fault.

This is a 21-spindle line boring and drill head, a drill bits connector for woodworking drilling machines, supplied under the Shunhongyu brand as woodworking machine parts. The 32x21 figure describes the head's boring pattern. Before ordering, compare your existing head: count the spindles, measure spindle spacing and note the bit shank your machine runs.

Mount the head on the drilling machine's boring spindle mount and seat a bit in each of the 21 spindles. Alignment across the full row is what makes a single pass usable, so check spacing against your shelf pin, dowel or hinge pattern before the first production run. A head that seats true keeps hole rows parallel.

Orders ship by DHL, FedEx or UPS from China. No packing, customisation, MOQ or lead time is stated here, so ask. With your enquiry, send the machine make, spindle count and spacing, bit shank size, and a photo of the head you are replacing. That lets the supplier confirm the 21-spindle head matches before it ships.

What the specification fixes, and what it leaves to the machine:

• Spindle count for shelf pin rows — 21 spindles set the hole count per pass, so one stroke covers a full shelf pin row instead of repeated single-hole drilling.
• Boring pattern check — The 32x21 pattern is the figure to match against your machine before ordering, since spacing decides whether hole rows line up.
• Bit shank fit at each spindle — Each of the 21 spindles takes one drill bit, so confirm your bit shank size seats correctly in every spindle.
• Alignment across the full row — High precision alignment keeps all 21 bits on spacing, which matters where dowel joints and hinge mounts depend on parallel holes.
• Construction for repeated passes — Durable construction suits a head that runs pass after pass in line boring, where a loose spindle shows up as stepped holes.
• Mounting to the drilling machine — The head mounts on a woodworking drilling machine as a boring head; check your spindle mount against the head before fitting.
• Interchangeable bits between jobs — Bits can be switched between sizes for different jobs, so one head covers more than a single fixed drilling setup.

What changes on the shop floor when the right part goes back in:

• Fewer setups per panel. Drilling 21 holes in a single pass removes repeated positioning between holes, which cuts handling time on shelf pin, dowel and hinge work and keeps spacing consistent across the run.
• Spacing holds across the row. High precision alignment across 21 spindles means hole rows stay parallel panel after panel, so dowel joints and hinge mounts go together without reaming or forcing at assembly.
• One head, several bit sizes. Interchangeable drill bits let you move between sizes for different jobs without a second boring head, which keeps changeover short when a batch calls for a different hole.
• Built for repeat passes. Durable construction is aimed at a head that runs continuously in line boring, so the spindle row holds alignment through production instead of drifting after a few panels.
• Fit confirmed before shipping. Matching the 32x21 pattern and 21-spindle count to your machine before ordering avoids a head that arrives with the wrong spacing and cannot be used.
• Clear wear check. Spindle bores and bit seats are the first wear points, so a drift in hole spacing points you to the head rather than sending you chasing machine setup.

Check the 32x21 pattern, the 21-spindle count and your bit shank size against your machine before ordering. Send the machine make and a photo of the head you are replacing, and confirm the spindle mount matches.

21 holes per pass. The 21 spindles each hold one drill bit, so a single stroke covers a full row at the spacing the head is built to.

It is the boring pattern figure to match against your machine. Measure your existing head's spacing and compare it with this pattern before you order, since spacing decides whether hole rows line up.

Yes, the bits are interchangeable, so you can switch between sizes for different jobs. Confirm your bit shank size seats correctly in the 21 spindles before running production.

The spindle bores and bit seats. When holes start drifting out of spacing, check those points first, because they take the wear from repeated line boring passes.

Shipment runs by DHL, FedEx or UPS from China. Lead time is not stated here, so ask the supplier for the current shipping schedule with your enquiry.

Customisation is not stated for this head, so ask directly. Send your required spacing and bit shank size, and the supplier can confirm whether a 21-spindle head to that pattern is available.

Send the machine make, spindle count and spacing, bit shank size, and a photo of the head you are replacing. That lets the supplier confirm the 21-spindle head matches before it ships.