Reference

Hobby CNC routers: mount diameter, Z axis and spoilboard thread

Pick your machine and Z axis to see the mount diameter and spoilboard thread it uses, where each number comes from, and the parts whose makers list it as compatible.

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Your cnc machine

Choose your cnc machine to see the key facts and what fits. Each fact links to its source on the full page.

Fits the most cnc machines

Fits 4 of 7Genmitsu Upgrade CNC Router Vise Clamp, low-profile aluminum toe clamp (101‑63‑VC), 2 or 4 pieces4 clamps (101-63-VC-4P)Check price on Amazon
Fits 3 of 7Genmitsu DS69 dust shoe for 65‑69 mm spindles and compact routersDS69, 65-69 mm (65 mm gasket fitted, remove it for 69 mm)Check price on Amazon
Fits 2 of 7Genmitsu 65 mm aluminum spindle holder (101‑63‑ZC65) for the 4040‑PRO family65 mm bore (101-63-ZC65), 88 x 91 x 36 mmCheck price on Amazon

All cnc machines

Carbide 3D Shapeoko 3 What Carbide 3D says fits the Shapeoko 3: the 65 mm VFD kit limits, the controller update, Sweepy 2.0 and clamps without a Hybrid Table.
Carbide 3D Shapeoko 4 and Shapeoko Pro What Carbide 3D names for the Shapeoko 4 and Pro: the 65 mm VFD kit, the 2021 69 mm DeWalt mount, Hybrid Table hardware and Sweepy 2.0.
Carbide 3D Shapeoko 5 Pro Carbide 3D's fit notes for the Shapeoko 5 Pro: the 65 mm kit's adapter cable, the 80 mm kit and mount, its supply rules and Hybrid Table hardware.
Onefinity with the original Z-16 slider Onefinity's 80 mm mount for the Z-16 original slider, the machines it lists and excludes, and the Suck It dust boots Onefinity sells for its own CNC.
Onefinity Z-20 (Gen 1 and earlier) Onefinity's Gen 1 Z-20 guidance (65 or 80 mm mount preinstalled), its Redline spindle kits and their supply rules, and the Suck It dust boots.
Onefinity Gen 2 Elite with the Z-20 Onefinity's 80 mm mount for Gen 2 Elite Z-20 machines, what it excludes, the 80 mm-only Suckit SM boot and its port size, and the Redline kits.
Sienci LongMill MK2 Sienci's LongMill MK2 mount sizes (52, 65, 71, 80 mm), the Makita router it tested, the AutoSpin and the dust-shoe limit on 71 and 80 mm mounts.1 product that fit
Inventables X-Carve (1000 mm, legacy) What Inventables' legacy X-Carve 1000 mm instructions say about the DeWalt 611 mount, and which upgrade parts were listed as sold out on 2026-10-11.
Genmitsu 4040-PRO Genmitsu's 4040-PRO mounts (42 and 52 mm, plus 65 or 69 mm with an extra holder), the 44 mm sleeve conflict, holders and dust shoes by diameter.5 products that fit
Genmitsu 4040-PRO MAX Genmitsu's 4040-PRO MAX: its 65 mm mount and 710 W ER11 compact router, the 65/69 mm holders and the water-cooled kit cable and adapter-plate notes.5 products that fit
Genmitsu PROVerXL 4030 V2 Genmitsu's PROVerXL 4030 V2: the extra 65 mm holder, the 69 and 65 mm 4030 V2 holders, the 300 W spindle-only SKU, toe clamps and the V2 water kit.3 products that fit
Genmitsu PROVerXL 6050 Plus Genmitsu's PROVerXL 6050 Plus: the 300 W stock spindle, the extra 65 mm holder, the 14.5 mm bit-center shift from 52 to 65 mm, and toe clamps.3 products that fit
FoxAlien Masuter Pro FoxAlien's Masuter Pro ships with 52 and 65 mm clamps; the 69 mm Z clamp is sold separately. FoxAlien's authorized stores and direct return terms.1 product that fit
FoxAlien 4040-XE and XE-PRO FoxAlien's 65/69 mm Z clamp for the 4040-XE and XE-PRO (Makita and DeWalt classes) and why it does not fit the XE-Ultra.1 product that fit