Choose from a large inventory of 5C, 16C, 20C, 25C and 3J collets, FlexC vulcanized collet systems, emergency collets and step chucks, as well as B42 and B65 stationary collets. Let Hardinge solve your workholding problems such as hard-to-grip shapes and surfaces, part length control, thin-wall turning, etc. Hardinge supplies D-style, WW and 3C collets and step chucks for instrument lathes, turret lathes and micro-drilling machines for the medical, dental, electronic, watchmaking, model engineering and related industries.

Replace your standard collet or 3-jaw chuck to ramp up productivity. When compared to a jaw chuck, the precision-engineered Hardinge® FlexC Collet Systems allow you to increase the spindle rpm without concern for centrifugal forces for faster setup, changeover, higher accuracy, and a wide gripping range for stock variation. Advanced cutting tools, along with higher feed rates and spindle speeds with our FlexC Collet Systems. Systems available for A2-5, A2-6, A2-8 and some flat-back CNC lathe spindles.

Hardinge® Swiss-type Collets are ground to precise size and TIR to meet precision machining requirements with a standard accuracy that rivals the industry! Every collet and guide bushing is inspected on a Hardinge Super-Precision (.000015″ TIR) headstock before reaching the stockroom. Hardinge manufactures to Swiss quality, in the USA, for all brands of Swiss-style machines and cam-operated lathes. Hardinge round Swiss Guide Bushings are carbide-lined to keep the stock clean and unmarked. Hardinge manufactures bar feed collets for FMB, IMECA, LNS and Robobar bar feeders. Collets available for other brands on request. Hardinge offers a complete line of tool holders, tap holders, toolholder collets, tap collets and bushings that can be used on Swiss-type lathes. You’ll find reliable and economical solutions for back-end, sub-spindle and end-working slides.

Hardinge® Sure-Grip® Expanding Collet Systems offer solutions to difficult machining problems for turning, milling, grinding, assembly and automation applications. Hardinge is the expert when it comes to exact part length control, patenting the first Dead-Length 5C and 16C collets used for high-production manufacturing. Our Sure-Grip Expanding Collet Systems have true part length control built into its double-angle design, assuring exact workpiece lengths by locating the part against the face of the arbor or against a machineable work stop. The collet draws the workpiece firmly against the stop, producing an extremely stable part. The results are heavier cuts, better surface finishes, and closer tolerances. Long parts can be easily machined due to this added stability. Sure-Grip Collets can be custom manufactured for special applications for spindles, sub-spindles and mill tables. Pick-off collets are frequently engineered for Swiss and multi-spindle machines. Splined or serrated surfaces can be made for special grips and shapes, while recessed draw-plug styles might solve your short gripping problem.

Hardinge® HCAC Collet Chucks offer collet capability for higher precision and accuracy when you need it. Increase productivity, capability and control when compared to 3-Jaw chucks. HCAC Collect Chucks offer faster job changeover at higher spindle speeds for reduced cycle times. Achieve higher precision and improved concentricity for optimum part roundness. Available in 42, 65 and 90mm sizes for A2-5, A2-6 and A2-8 spindle noses.

Hardinge® provides an extensive line of collet blocks that can be used for milling, drilling, grinding, crimping, inspection, testing and assembly applications. Collet blocks can be used vertically or horizontally on mill tables, flat or angled fixture plates, tombstones or rotary trunnions. Sizes are available from the 1C micro medical manufacturing needs up to the 35J mid-range for applications in the automotive and aerospace industries. Purchase individual components to build our own pneumatic or hydraulic system, or let Hardinge configure a complete turnkey package for you.

The Style “S” master collets and pads overcome all the problems associated with master collets. When loading bars, the rugged shoulder of the pad locates against the front of the groove in the master collet. There are no set screws or clamps to be damaged or loosened. When a part is machined, the working forces are against the rear shoulder of the pad which is located against the rear shoulder of the groove in the master collet. Again, there are no screws or clamps to wear or break. The clamp which holds the pads captivated in the collet literally floats longitudinally, assuring that there is never any pressure on the clamp. There are no holes in the OD of the master collet, or on the ID of the pads, resulting in maximum bearing on the workpiece and the spindle collet seat. When Style “S” collets are used, there will never be high spots on the spindle collet seat caused by the master collet and pad design. When selecting master collets from this catalog, remember the Style “S” design has been in existence for over 50 years and is the preferred system.

Style “B” master feed finger pads are uniquely designed and proven by over fifty years of use in the machine tool industry. The straight-forward design allows for full bearing of the pad ID on the workpiece. There are no screws or tabs to wear, or to remove bearing area from the pads ID. The master feed fingers are spring tempered to the proper gripping tension for maximum longevity. Custom master feed fingers can be easily and quickly manufactured at Hardinge to give extremely light grip, or heavier grip for nonstandard applications. The use of Style “B” master feed fingers will assure you of minimum downtime on your production floor.

Hardinge Style “B” feed fingers and pads are the most practical feed fingers for high production bar machining. Designed and manufactured to be the most reliable on the market today, they offer many advantages over other styles.

Hardinge® HQC Quick-Change collets can be changed from one size to another in less than 20 seconds. The HQC System requires less draw bar force to adequately grip the bar, greatly reducing the breakage of closing fingers and pins common when the bar varies beyond the range of a standard solid collet or master collet with pads. Eliminating the need to change collets due to normal variations in bar stock, greatly reduces the downtime normally required. Since solid collets and master collets are of a one-piece construction, considerable force is required to flex the leaves of a solid collet and bring the gripping surface in contact with the workpiece OD. Because there are no leaves in the HQC system, additional gripping pressure is directly applied to the workpiece. Higher feed rates and higher spindle speeds are possible. Because of the extra gripping force, tool life increases and parts come off the machine quicker. There is no collet shank. Therefore, the collet segments remain parallel to the stock even when there are variations in the stock size. Parallel clamping minimizes stock “push back” and requires less draw bar force to achieve the same gripping capability as conventional collets. The HQC patented operator-replaceable slot-seal system eliminates the need to return the collet to the manufacturer to have the seals changed.

Scroll Chucks offer dead true precision and guarantee .0005” repeatability on duplicate parts. This precision comes from a built-in .020” clearance between the chuck body cavity and the mounting plate hub. This allows opposing screws ample movement to adjust work accurately.

This adjustment takes less than a minute, andno further adjustment is needed to get precision within .0005” TIR on duplicate parts.

The Buck Chuck model independent chucks provide rugged versatility and a quick change jaw system. The independent jaws can be adjusted individually, making the PSA ideal for both cylindrical and irregular shaped workpieces. The spindle housing and jaws are made from hardened steel, guaranteeing a long service life and high precision.

The Buck Chuck model independent chucks provide rugged versatility and a quick change jaw system. The independent jaws can be adjusted individually, making the PSA ideal for both cylindrical and irregular shaped workpieces. The spindle housing and jaws are made from hardened steel, guaranteeing a long service life and high precision. The jaws are made according to American Standard Tongue and Groove and are equipped with a quickchange jaw system. The base jaws are divided with a thread for the adjustable spindle and stepped reversible top jaws. To turn the top jaw on the base jaw, simply release the jaw mounting bolt.

The Buck Chuck power chucks provide a high precision, universal application chuck that is suited for practically all turning applications. The lightweight design allows for faster speeds, which combined with the optional quick change jaw system makes an excellent choice for decreasing machine cycle times while saving energy and spindle wear.

They feature a higher clamping force and higher precision especially suited for heavy duty machining of disk and bar components as well as high precision finish machining of easily deformed workpieces. The jaw selections available are compatible with the industry standards in the US, Europe and Asia, making top tooling purchases simple and economical.