The Mafell 093738 Collet Chuck Set features a 4-spline 1/8 in. (3,175 mm) collet and matching union nut designed for legacy and standard Mafell milling motors and edge routers such as the FM 800, FM 1000, and KF 1000 utilizing 4-spline clamping interfaces. This set ensures precise tool centering and secure retention for 1/8 in. shank bits.

Note that this 4-spline set is built specifically for 4-spline union nut configurations and is not cross-compatible with newer 6-spline collet systems.

Features & Benefits

• Complete Set: Includes both the 1/8 in. collet chuck and the matching union nut.
• 4-Spline Design: Matches older 4-spline motor spindles found on select Mafell FM and KF series units.
• Secure Clamping: Firmly grips 1/8 in. (3,175 mm) shank tooling to prevent slippage during high-speed routing.
• OEM Precision: Manufactured to exact factory tolerances to maintain concentricity and reduce vibration.

What's Included

• 1 Collet chuck OZ 3,175 mm (1/8 in.)
• 1 Union nut (4-spline)

Shipping: Beaver Industrial Supply offers free shipping on orders over $199, with the exception of Sawstop and Laguna, which require additional fees to be collected. Other exceptions apply as noted on product pages.

We reserve the right to determine the fastest and most cost-effective manner of transportation for all orders that qualify for free shipping. Our shipping carriers cannot deliver to PO box or U.S. military post office box addresses, such as APO and FPO, so we require a physical street address for delivery. We use USPS, which typically takes 2-8 days for delivery, depending on your location, for smaller items and UPS Ground for all other ground shipments under 150 pounds.

• Returns: We accept returns and exchanges for a fee up to 30 days in unopened, new, and unused condition in the original packaging. Exceptions apply.

Please note, NO REFUNDS will be given on any new, used, or damaged item if it is not returned in the original packaging, no matter what condition the packaging is in. If the item qualifies for free shipping, you will be charged the original shipping cost and are responsible for shipping the product back with the shipping carrier of your choice.

We must receive the item undamaged. We recommend you package it accordingly and purchase insurance for higher-priced items to ensure you receive the full refund minus any incurred fees as applicable. We reserve the right to refuse the return of accessories.

Because items are your responsibility until they reach us, we recommend that you send the parcel using a delivery service that insures you of the value of the goods. Return shipping is at the customer's cost. At Beaver Industrial Supply’s discretion, delivery charges can be refunded if the goods are defective.

Returns require a return authorization number. Please call customer service at 314-773-5999 or submit a customer service inquiry to start the exchange or return process and receive an authorization number.

Machinery too large for parcel shipment (palletized or crated) is only returnable if there is a material defect that cannot be resolved by replacing components.