The Mafell K 85-18 3 7/16 in. (88 mm) Cordless Portable Circular Saw (Ref. No. 91E324) delivers timber-framing power and precision in a high-capacity 36V dual-battery platform. Engineered for professional carpenters, timber framers, and woodworkers, this heavy-duty circular saw handles deep rip cuts, cross-cuts, bevels up to 60 degrees, birdsmouth cuts, and plunge cuts across solid wood, board materials, and insulation framing.

Powered by the high-output CUprex motor with digital control electronics, the K 85-18 offers continuously variable speed control from 2,800 to 5,200 RPM to adapt seamlessly to varying material densities. The integrated Mafell ErgoBalanceConcept optimizes tool balance and handle ergonomics to minimize operator fatigue during long cuts. For plunge cutting, the patented FLIPPKEIL spring-loaded riving knife automatically retracts into the housing during plunge cuts without requiring removal or manual adjustment, providing smooth plunge operations without compromising user safety.

Designed for jobsite versatility, the saw features a precision base plate with an integrated guide groove that connects directly to Mafell F-series guide rails or the Guide Track L cross-cutting system. An automatic pointer aligns with the selected angle throughout the 0 to 60 degree tilt range, keeping cut tracking accurate along marked lines. Bright dual LEDs illuminate the work surface, while an engineered dust channel ensures optimal chip ejection when working with fiber insulation and dense solid timbers.

Features & Benefits

• CUprex Motor: High-output motor with digital control electronics and variable speed (2,800 - 5,200 RPM) maintains cutting performance across diverse materials.
• FLIPPKEIL Riving Knife: Retracts automatically during plunge cuts without requiring tool removal, maintaining optimal user safety and plunge efficiency.
• ErgoBalanceConcept: Ergonomically balanced design reduces physical strain and enhances guidance accuracy during long ripping and cross-cutting passes.
• 36V Dual-Battery Output: Powered by two 18V CAS batteries to deliver corded-level cutting performance with complete cordless mobility.
• High Cutting Capacity: Achieves a depth of cut up to 3 7/16 in. (88 mm) off the rail and up to 3 1/4 in. (82 mm) when mounted on a guide rail.
• 60-Degree Bevel Range: Smoothly tilts from 0 to 60 degrees with an easy-to-read scale for compound miter, bevel, and birdsmouth cuts.
• Automatic Cutting Pointer: Angle-tracking pointer automatically shifts position relative to the bevel angle to maintain accurate tracking on cut marks.
• Guide Rail Integration: Base plate groove interfaces directly with Mafell F-guide rails and Guide Track L systems for straight, repeatable cuts.
• LED Work Lighting: Bright integrated LEDs flood the working area for clear visibility along layout lines.
• Optimized Chip Ejection: Ejection channel efficiently clears large volumes of wood chips and insulation materials to prevent clogging.

What's Included

• (1) TCT Saw Blade 237 x 1.8/2.5 x 30 mm (9 5/16 in.), AT, 12-Teeth (Ref. No. 092590)
• (1) Parallel Guide Fence K 85-PA (Ref. No. 205323)
• (1) Allen Key 5 mm (Ref. No. 093034)
• (1) L-MAX Carrying Case

This SKU (Ref. No. 91E324) is supplied as the PURE bare tool configuration in an L-MAX case, without batteries or charger. It is intended for tradespeople who already utilize the 18V Cordless Alliance System (CAS) battery platform. For users requiring power supplies, the Mafell Power-Set 2 (Ref. No. 209594) or individual 18V LiHD batteries (Ref. No. 094503) and APS M chargers (Ref. No. 095220) are available separately.

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.