Used Gear Cutting and Hobbing Machines at Auction: A Buyer and Seller Guide

A gear hobbing machine is one of the most specialized assets that comes through an industrial auction, and it rewards buyers and sellers who understand what they are looking at. Gear cutting equipment, the hobbers, gear shapers, grinders, and the bevel gear generators built by Gleason, does not move through the used market the way a Bridgeport or a VMC does. The buyer pool is smaller, the machines are heavier and mechanically intricate, and the gap between a well-maintained unit and a worn-out one can be tens of thousands of dollars. Whether you are bidding on a used gear cutting machine to add capacity to a job shop or trying to value a gear department before you sell it, here is what matters on both sides of the auction.

The Gear Cutting Equipment Category, Briefly

Gear cutting is not one machine type, it is a family of processes, and each one shows up differently at auction.

• Gear hobbers use a rotating, helically fluted cutting tool, the hob, that generates teeth as the workpiece indexes in sync. This is the workhorse process for external spur and helical gears. Common names on the floor include Barber-Colman, Gleason-Pfauter, Liebherr, Mitsubishi, and Kashifuji, with Gleason-Pfauter P-series and Liebherr LC-series machines typical of the CNC end of the market.
• Gear shapers use a reciprocating pinion or rack-type cutter and handle internal gears, cluster gears, and teeth close to a shoulder that a hob cannot reach. Fellows and Lorenz are the names that define this category, with Fellows shapers commonly identified by a pitch-diameter and stroke designation.
• Gear grinders finish hardened gears to tight AGMA quality classes after hobbing or shaping. Reishauer and Kapp are the recognized names here.
• Bevel gear generators produce spiral bevel and hypoid gears, and Gleason is so dominant here that a Gleason gear machine is often used loosely for the whole bevel gear category, even though Gleason also owns the Pfauter hobbing line and builds gear grinders.

What Drives Value in a Used Gear Hobber or Gear Shaper

Capacity and Configuration

Maximum workpiece diameter, maximum module or diametral pitch, maximum face width, and the number of controlled axes set the ceiling on what a machine can produce, and buyers shop by these numbers first. A hobber rated to a 6 inch diameter is not a substitute for one rated to 20 inches, and pricing reflects that gap even when both machines are in similar mechanical condition.

Control and Age

Older mechanical and cam-driven hobbers and shapers, many of them long-running Barber-Colman or Fellows machines, still cut accurate gears and still find buyers, particularly for prototype and low-volume work. But a machine retrofitted with a modern Fanuc or Siemens CNC control commands a real premium over one still on original relay logic, because the retrofit removes the biggest risk in the purchase: obsolete electronics with parts that are hard or impossible to source.

Tooling and Completeness

On a mechanical hobber, the change gear set determines which diametral pitches and helix angles the machine can cut without custom gearing, so a machine missing part of its set is functionally limited no matter how clean the ways look. On any gear machine, hob arbors, shaper cutters, work arbors, and chucks included in the lot materially change what a buyer will pay, since sourcing that tooling separately is slow and expensive.

What to Inspect Before You Bid

Gear cutting machines hide their wear better than most. A machine can look clean and still cut inaccurate gears if the index train has drifted. Before you bid, check:

• Spindle runout on both the work arbor and the hob head or cutter spindle
• Backlash in the index gear train on mechanical hobbers and shapers
• Way wear and table flatness, especially on machines that ran high-volume production for years
• Hydraulic and coolant system condition, including visible leaks around the tank and lines
• Whether the control powers up and cycles through its functions, and whether OEM documentation or a maintenance log is included
• Completeness of tooling, including hobs, shaper cutters, arbors, and change gears
• Any record of a prior rebuild, control retrofit, or spindle bearing replacement
• Machine weight and rigging access, since these machines commonly run from a few tons to well over 15 tons and need a planned lift, not a forklift

How Bidding and Pricing Work at Auction

KD Auctions runs bidding fully online, with photos, condition notes, and posted inspection windows so buyers can evaluate a gear hobber, gear shaper, or grinder before the auction closes rather than guessing from one listing photo. Rigging and transportation are the buyer's responsibility after the sale, so factor that into your bid, particularly on larger CNC hobbers and bevel gear generators that need a crew and a rigging plan.

On pricing, general market context helps, but every machine is different. Older manual gear shapers and smaller mechanical hobbers, especially well-worn units without a control retrofit, often trade in the low five figures. Mid-size CNC gear hobbers with a modern control and a usable tooling package typically reach well into six figures depending on capacity and condition. Gear grinders and bevel gear generators can command a premium over comparable hobbers because so few come to market in a given year. Treat these as rough reference points, not appraised values. For an exact figure on a specific machine, KD Auctions provides AMEA-certified, USPAP-compliant appraisals accepted by lenders, courts, and the IRS, which hold up for financing, estate, and tax matters where market comparables are hard to find online.

Selling or Liquidating Gear Cutting Equipment

Gear cutting equipment is a thin market. There are far fewer active buyers for a Gleason gear machine or a Liebherr hobber than for a general-purpose VMC, so reaching the right specialized buyer, not the largest crowd, is what sets the final price. That is where KD Auctions and its network of 500,000+ industry contacts matter most, since it puts a niche machine in front of the gear shops, tooling manufacturers, and job shops actually equipped to run it.

Sellers generally choose between two paths. A cash purchase gets you an offer in 24 to 72 hours, funds typically 3 to 7 days after you accept, and removal from your facility in 1 to 2 weeks, which suits a plant that needs speed and certainty over the last dollar. A managed auction runs 6 to 10 weeks and uses competitive online bidding to find the ceiling on what a well-configured CNC gear hobber or a complete gear cutting department is worth, usually the better route when timing allows. For urgent situations, the KD Auctions team can be onsite within 48 to 72 hours to begin staging, photographing, and lotting equipment. Commission is tailored to the engagement, quoted upfront, and most sellers pay nothing out of pocket.

KD Auctions was founded by Michael and Arlene Treger in 1996 and has run hundreds of auctions since, representing hundreds of millions in machinery sales across manufacturing categories, all conducted fully online. Call 480.455.3910 to talk through whether a cash offer or a managed auction fits a gear hobber, gear shaper, or grinder you are ready to move.

FAQ

What is the difference between a gear hobber and a gear shaper?

A gear hobber uses a continuously rotating hob to generate teeth while the workpiece indexes in sync, which makes it efficient for external spur and helical gears. A gear shaper uses a reciprocating cutter that strokes up and down while indexing around the part, which lets it cut internal gears, cluster gears, and teeth close to a shoulder that a hob cannot physically reach.

How much is a used gear hobbing machine worth?

It depends on capacity, control type, tooling completeness, and how many active buyers want that configuration when it sells. Manual and older mechanical machines generally bring less than CNC units with a modern Fanuc or Siemens retrofit and a usable tooling package. Because ranges vary so widely by make and model, the reliable answer is an AMEA-certified, USPAP-compliant appraisal from KD Auctions rather than a rule of thumb.

Do I have to sell my whole gear department at once?

No. KD Auctions can sell a single gear hobber, gear shaper, or grinder as its own lot, or handle an entire gear cutting department together, including related tooling, gauging, and material handling equipment, whichever approach gets the best result for the situation.