CNC machine
Onefinity Z-20 Gen 1: 65 or 80 mm mount and Redline kits
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.
Also listed as Gen 1 Elite, Onefinity Z-20 Gen 1
Short answer
Onefinity's mount-size article says the Z-20 ships with a 65 mm or 80 mm mount preinstalled and that switching sizes later means buying a new Z-20 assembly; treat that as Gen 1 and earlier guidance. Onefinity sells Redline spindle kits in 65 mm (ER11, 110 V) and 80 mm (ER20, 110 V or 220 V) versions. Its Gen 2 80 mm mount excludes Gen 1 Elite machines.
Key facts
- Z axis or slider
- Z-20[1]
- Router or spindle it ships with
- Not confirmed
- Mount it ships with
- 65 mm or 80 mm, preinstalled on the Z-20[1]Onefinity's article does not say Gen 1 or Gen 2; we limit it to Gen 1 and earlier because Onefinity now sells a separate Gen 2 80 mm mount.
- Other mounts the maker lists
- Switching mount sizes later means buying a new Z-20 assembly, per Onefinity's article[1]Gen 1 and earlier guidance only.
- Mounts and kits the maker excludes
- Onefinity's Gen 2 Z-20 80 mm mount (z2080mmmountGen2) excludes Gen 1 Elite machines, and the Z-16 80 mm mount is not compatible with Elite series machines. The 65 mm Redline kit is not compatible with Onefinity's ATC.[2][3][4]
- Spindle kits that name it
- Onefinity Redline kits: 65 mm 1.5 kW (ER11, 110 V), 80 mm 1.5 kW (ER20, 110 V) and 80 mm 2.2 kW (ER20, 220 V single-phase)[4][5][6]These are Onefinity's own kits. Their pages do not state a per-generation machine list, so check the kit page against your machine.
- Supply the maker's kits require
- Onefinity: the Redline VFD requires a 15 A breaker, and GFCI installation may cause frequent false tripping. The 2.2 kW 80 mm kit is 220 V single-phase with a NEMA 6-15P plug; the 1.5 kW kits are 110 V.[6][4][5]Quoted from the maker. The kit manual and a qualified electrician decide the circuit; never remove or bypass GFCI protection. Onefinity names no certification mark.
- Collets supplied
- Redline 65 mm: ER11 nut with 1/4 and 1/8 in collets. Redline 80 mm (1.5 and 2.2 kW): ER20 nut with 1/2, 3/8, 1/4 and 1/8 in collets.[4][5][6]These come with the spindle kits, not with the machine.
- Table and workholding thread
- Not confirmed
- Dust boots that name it
- Onefinity Suck It (Gen 1) regular and Pro, with a built-in 2.5 in hose adapter[7]Onefinity says the Suck It works only with the Onefinity CNC.
- Maker support for third-party parts
- Onefinity says it no longer offers parts or support for other machines.[7]
- Revisions and conflicts
- Onefinity's mount-size article (dated January 2024, updated December 2025) does not separate Gen 1 and Gen 2; Onefinity now sells a separate Gen 2 Z-20 80 mm mount.[1][2]
- Not confirmed
- Not confirmed
Watch out for
- Onefinity's Gen 2 80 mm mount (z2080mmmountGen2) excludes Gen 1 Elite machines.
- Changing mount size on a Gen 1 Z-20 means a new Z-20 assembly, per Onefinity's article.
- The 65 mm Redline kit is not compatible with Onefinity's ATC.
- Onefinity warns that GFCI installation may cause frequent false tripping with the Redline VFD. Do not remove or bypass GFCI protection; ask a qualified electrician.
This is a reference for owners, not a machine recommendation. Gen 2 owners should use the Gen 2 Elite record.
Questions
Can I change my Gen 1 Onefinity Z-20 from 65 mm to 80 mm?
Onefinity's mount-size article says the Z-20 ships with a 65 or 80 mm mount preinstalled and that switching sizes later means buying a new Z-20 assembly. The Gen 2 80 mm mount excludes Gen 1 Elite machines.[1][2]
What collets come with the Onefinity Redline kits?
The 65 mm 1.5 kW kit has an ER11 nut with 1/4 and 1/8 in collets. The 80 mm kits have an ER20 nut with 1/2, 3/8, 1/4 and 1/8 in collets.[4][5][6]
Does the Onefinity Redline VFD work on a GFCI outlet?
Onefinity warns that GFCI installation may cause frequent false tripping and says the VFD requires a 15 A breaker. The kit manual and a qualified electrician decide the circuit; never remove GFCI protection.[6]