Mount size
52 mm spindle mounts: machines, spindles and dust shoes
Which machines and spindles use a 52 mm mount, the DS52 dust shoe and its label conflict, and how the 42 mm and 44 mm labels fit in.
Also listed as 52mm spindle mount, 52 mm holder, 42 mm, 44 mm
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Short answer
52 mm is the small DC-spindle size on several hobby machines: Genmitsu's 300 W spindle has a 52 mm body with an ER11 collet, and Genmitsu, FoxAlien and Sienci all list 52 mm holders. Genmitsu also lists 42 mm mounts, and one SainSmart article describes a 44 mm sleeve inside a 52 mm mount, so measure before buying.
What fits
Key facts
- Nominal bore
- 52 mm (about 2.05 in, calculated from 25.4 mm per inch)[1][2][3]A calculation, not a tolerance.
- Labels makers use
- 52 mm. Genmitsu's DS52 page gives 52 mm as 1.65 in in its text and 2.05 in in its spec table. Genmitsu also lists 42 mm mounts, and SainSmart's 4040-PRO article describes a 44 mm sleeve.[4][5][6]1.65 in matches the 42 mm DS3018, so it is a listing error; use the metric figure.
- Routers and spindles made to it
- Genmitsu 300 W spindle: 52 mm, 12-48 V DC, ER11 collet, 3,000 RPM at 12 V to 12,000 RPM at 48 V[2]Maker figures.
- Machines with a holder in this size
- Genmitsu 4040-PRO (42 and 52 mm mounts listed); Genmitsu PROVerXL 6050 Plus (52 mm standard mount, per SainSmart's setup article); FoxAlien Masuter Pro (52 mm clamp included); Sienci LongMill (52 mm router mount offered)[5][7][8][1]
- Rings and shims to other sizes
- SainSmart's 4040-PRO setup article says the 52 mm mount has an internal sleeve that holds 44 mm motors such as standard 775 motors[6]It conflicts with the product table's 42 mm and 52 mm listing; the cause is unresolved.
- Collet systems makers pair with it
- ER11 on Genmitsu's 300 W 52 mm spindle[2]
- Dust boots for this size
- Genmitsu DS52 (52 mm spindles; 32 mm inner and 38 mm outer vacuum port). Genmitsu says its DS69 is not compatible with 52 mm spindles.[4][9]The DS52 page lists one 20 mm brush cover in the box while its bullets say two covers.
- How to check yours
- Measure the body's outside diameter with a caliper on the band the mount clamps, and the mount's inside diameter. PwnCNC advises measuring mount ID, usable clamp height and body OD before ordering a shim.[10]Plain technique; we give no tolerance.
Watch out for
- Genmitsu's DS52 listing gives 52 mm as 1.65 in in one place; 52 mm is about 2.05 in, and 1.65 in matches the 42 mm DS3018.
- Genmitsu's DS69 does not fit 52 mm spindles.
- On the 4040-PRO, the product table says 42 and 52 mm mounts while SainSmart's article describes a 44 mm sleeve in the 52 mm mount.
- On the PROVerXL 6050 Plus, moving from the 52 mm to the 65 mm mount shifts the bit center 14.5 mm forward, per SainSmart.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Dust shoe
Genmitsu DS52 dust shoe for 52 mm spindlesChoose the DS52 for a 52 mm spindle.
Genmitsu matches the DS52 to 52 mm spindles with a 32 mm inner and 38 mm outer port.
Dust shoe (52-69 mm)
FoxAlien 69 mm dust shoe for 52, 65 and 69 mm spindles and routersChoose the 69 mm shoe; FoxAlien sells it for 52, 65 and 69 mm bodies.
FoxAlien lists 52 mm (300-400 W spindle) among the bodies this shoe fits.
Machine records: Genmitsu 4040-PRO, PROVerXL 6050 Plus, FoxAlien Masuter Pro.
Questions
Which spindles have a 52 mm body?
Genmitsu's 300 W spindle is a 52 mm, 12-48 V DC motor with an ER11 collet. Genmitsu sells it spindle-only for the PROVerXL 4030 and 4030 V2.[2]