Round Cartridge Spindles
Select your spindle and pulley types for pricing.
Spindle Options: 3/4-16 #1M taper or ER-16
Pulley Options: Cog or 2-step V
About the Industrial Round Cartridge Spindles
The cartridge spindle bodies are turned from bar stock steel and have a black oxide finish. The steel spindle shaft has a .405″ (10mm) hole through the center. They are available with your choice of a spindle (3/4-16 #1M taper or an ER-16*) and pulley configuration (a standard 2-step “V” belt pulley or a 30-tooth cog belt pulley).
All Sherline Industrial spindles feature lifetime lubricated bearings with adjustable preload. The bearings are Class 5 for better accuracy, tighter tolerance, smoother and quieter movement, and cooler running. The bearings in all our industrial headstocks, except for the 3C headstock, are 6004-VV C3P5 – ABEC 5. The headstock bearings are rated for a continuous speed up to approximately 4,000 RPM with factory preload adjustment of .0002″. You may need a slightly looser preload setting of .0003” for operating speeds up to 10,000 RPM.
*NOTE: We do not sell the collets used with the ER-16 spindle. Those are available through MSC Industrial Supply Co. or other tool supply sources.
- Spindle bearing dust cover washer
- ER-16 collet nut ships with the ER-16 spindle headstocks
Installing the Round Cartridge Spindle
The Sherline round cartridge spindle has an OD of 2.2495″–2.2500″ on the cartridge. This cartridge is designed to be mounted in a 2.250″–2.252″ diameter hole.
Optional Nickel/Teflon Spindles
Most of our spindles are available with a Nickle/Teflon plating as a rustproof option for an additional cost. Check the option box above to add the Nickel/Teflon plating to your spindle order.
These spindles should be considered light duty. A .405 (10 mm) through hole allows long stock to be passed through the spindle. This design provides a lot of versatility but was not intended for long or out-of-round parts to be rotated at high RPM. It is up to the operator to determine if the spindle and the setup are adequate and safe for the job being attempted.
The spindle is equipped with a dust cover, but it is not totally sealed. The presence of dust from grinding operations can shorten bearing life considerably. It was also not designed to be operated in a coolant bath. The spindle shaft should be shielded from coolant spray.
Always wear safety glasses when operating machine tools.
|Spindle diameter:||2.250″ (57.15 mm)|
|Spindle body length:||3.0″ (76.2 mm)|
|Hole through spindle||.405″ (10 mm)|
|Spindle nose thread (Models 6509, 6510)||3/4-16|
|Spindle nose internal taper (Models 6509, 6510)||#1 Morse|
|Spindle nose thread and taper (Models 6511, 6512)||ER-16|
|Bearings||(2) 20 mm, class 5, lifetime lubricated ball bearings with adjustable preload|
|End play (factory preload adjustment)||.0002″ (.0051 mm)|
|Maximum spindle speed||10,000 RPM|
|Recommended continuous spindle speed||4000 RPM or less|
|Mounting provision||None. This cartridge is designed to be mounted in a 2.250″–2.251″ diameter hole.|
|31080||10-32 x 3/8″ Flat Point Set Screw||1-2*|
|40230||3/4-16/#1 Morse Spindle (used on P/N 6509, 6510)||1|
|40320||Bearing Dust Cover Washer||1|
|40420||Class 5 Headstock Bearings||2|
|40440||#2 x 1/4″ Self-Tapping Phillips Head Screws||2|
|40600||10-32 X 1/4″ Flat PT Set Screw||2|
|43230||2-Step V-Belt Pulley (used on P/N 6510, 6512)||1|
|65016||30-T Timing Belt Pulley (used on P/N 6509, 6511)||1|
|65041||2.25″ Round Cartridge Spindle Body||1|
|65023||ER-16 Spindle (used on P/N 6511, 6512)||1|
|65026||ER-16 collet nut (used on P/N 6511, 6512)||1|
*1 set screw required for pulley on P/N 6510 and 6512, 2 set screws used on cog pulley, P/N 6509 and 6511
Click the P/Ns below to download a zipped version of the IGS 3D CAD file. You will need to extract the zip file before viewing the IGS file.
6509 3D IGS model
6510 3D IGS model
6511 3D IGS model
6512 3D IGS model
You need an IGS viewer to view .igs files. CLICK HERE to download a FREE IGS viewer.
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