Sherline Tapered Headstock w/ Flat Base ER-16, Cog Belt
Features precision-engineered ER-16 spindle and cog belt pulley
Incorporates lifetime lubricated bearings with adjustable preload
Allows secure mounting with two 1/4-20 holes and alignment key slot
Offers optional Nickel/Teflon plating for rustproof durability
Achieves recommended spindle speed of 4,000 RPM, max 10,000 RPM
The Sherline Tapered Headstock w/ Flat Base ER-16, Cog Belt is a precision-engineered component designed for industrial applications, drawing inspiration from the headstock used in Sherline's lathe and milling machines. Constructed from extruded 6061-T6 aluminum, it features a durable black anodized finish. This headstock is equipped with an ER-16 spindle and a 30-tooth cog belt pulley, offering versatility and precision in various machining tasks.
The headstock incorporates lifetime lubricated bearings with adjustable preload, ensuring enhanced accuracy, tighter tolerances, and smoother operation. These Class 5 bearings are rated for continuous speeds up to approximately 4,000 RPM, with the potential to reach up to 10,000 RPM with a slightly adjusted preload setting. The design includes a dust cover washer for the spindle bearing, although it is not entirely sealed, necessitating caution in dusty environments.
Mounting the headstock is facilitated by two 1/4-20 mounting holes and an alignment key slot on the flat base, allowing for secure attachment to fixtures or machines. The ER-16 collet nut is included with the spindle headstock, providing additional utility for various machining operations. Optional Nickel/Teflon plating is available for the spindle, offering rustproof protection for enhanced durability.
Note: The spindle is not designed for high RPM rotation of long or out-of-round parts, and it should not be operated in a coolant bath. Operators must ensure the setup is safe and adequate for the intended application.
1x Sherline Tapered Headstock w/ Flat Base ER-16, Cog Belt
1x 10-32 x 3/8″ Flat Point Set Screw
1x Preload Nut
1x Bearing Dust Cover Washer
1x 10-32 x 5/8″ SHCS
1x Class 5 Headstock Bearings
1x #2 x 1/4″ Self-Tapping Phillips Head Screws
1x 30-T Timing Belt Pulley
1x Industrial Headstock Case w/ Flat Base
1x ER-16 Spindle
1x ER-16 collet nut
Spindle base size: 76.2 x 85.4 mm (3.0 x 3.36")
Spindle case height: 93.1 mm (3.66")
Spindle centerline height above table: 63.5 mm (2.50")
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A $100 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
While the same return policy applies, these orders require a separate contact process for returns.
RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".
