| Adjustable Expanding | Automotive Taper | Bridge | Brown & Sharpe Taper | Car | Carbide | Chucking | Cobalt | Decimal | Die Makers | Dowel Pin | Expanding Adjustable | Hand Reamers | Jarno Taper | Morse Taper | P62 | RWMA Welding Equipment | Shell | | Stub Screw Machine | Taper Pin | Taper Pipe | Taper Shank | Tapered |
Why reaming is done?
A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides. ... The process of enlarging the hole is called reaming.
Reamer - Wikipedia
Reamer Guide
| Reamer Type | Use | Pros | Cons |
|---|---|---|---|
| Hand Reamers | Finishing small, precise holes manually | Very accurate; gentle on delicate materials | Slow; labor-intensive |
| Machine Reamers | Lathes, drill presses, milling machines | Fast; consistent; ideal for production | Requires proper machine setup |
| Straight Reamers | Finishing holes to exact size | High precision; smooth finish | Needs pre-drilled hole close to final size |
| Tapered Reamers | Press-fit holes; aligning tapered pins | Guides easily into holes | Cannot produce uniform, straight holes |
| Expansion / Adjustable Reamers | Flexible reaming for multiple hole sizes | Reduces need for multiple tools | Slightly less rigid; precision can vary |
| Shell Reamers | Large-diameter holes on an arbor | Cost-effective; replaceable cutting heads | Requires arbor and machine setup |
| Spiral Flute Reamers | Soft or gummy metals; through holes | Smooth cutting; reduces binding | More expensive; less rigid than straight flutes |
| Straight Flute Reamers | General-purpose hole finishing | Simple; precise; widely available | Chip removal is slower; can clog deep holes |
| Taper/Shank Reamers | Fit directly into machine spindles | Self-centering; secure fit | Limited to specific machine tapers |
| Step Reamers | Create multiple diameters in one tool | Saves time; precise finishing | Only suitable for specific hole designs |
| Counterbore Reamers | Drill and finish flat-bottomed holes | Saves time; precise finishing | Only suitable for specific hole designs |
Reamers for:
Reamers for Straight ( Parallel) Holes
CHUCKING REAMERS: A general purpose Reamer that is used in a variety of applications and materials. These are available in a variety of different styles such as Straight Shank, Taper Shank, and Stub Screw Machine.
R1500 Straight shank Chucking, LH spiral, RH cut

R1501 Straight shank Chucking, straight flute

R1100 Taper shank Chucking, LH spiral , RH cut
R1101 Taper shank chucking, straight flute
HAND REAMERS: Designed to be used by hand these reamers have a tapered lead for easy entry and a square on the end for use by a wrench. Used by maintenance and many other applications where the holes need to be reamed by hand.
R1400 Hand Reamer, LH spiral , RH cut
R1401 Hand Reamer, Straight Flute
Adjustable Hand Reamers are versatile tools each capable of reaming a series of odd sized holes over a limited range of adjustment
COBALT REAMERS: Made in a variety of sizes and styles, Cobalt Reamers afford quality finishes and increased tool life.
R1511"size" (fractional sizes)(straight flutes)
R1600"size"CO for decimal sizes

CARBIDE REAMERS: Made from premium Micro-Grain Carbide, they are precision ground to tight tolerances, provide superior finishes, improved hole sizes, and can be ran at higher speeds and feeds.
link to Carbide Tipped Straight Shank Chucking Reamer page
DOWEL PIN REAMERS: Made with a minus tolerance, used for reaming holes for dowel pins in the automotive industry and mold shops.

TAPER SHANK: Designed to fit MORSE Taper Sockets and Sleeves. These Reamers are similar in design to Straight Shank Reamers. They can be used in a number of different types of applications and materials.
R1000 Taper Shank, LH spiral , RH cut
R1001 Taper Shank, straight flutes
Helical Chucking Reamer
Morse Taper Shank
Duplex Chucking Reamer
Reamers for Tapered Holes
TAPER PIN REAMERS: These are designed for reaming holes so that standard taper pins will be able to fit properly. Best results will be attained if the hole is drilled a few thousandths smaller than the small diameter of the finished reamed hole.

TAPER PIPE REAMERS: Taper Pipe Reamers are used before tapping with a variety of different types of pipe taps those include NPTF, Dryseal, and ANPT.
Diemaker Tapered Reamers
Die Maker Reamers are used to create tools such as die sets, punches, and steel rule dies.
Reamers for enlarging Holes
CAR REAMERS: Car Reamers are designed for Railroad Car building work. A special cutting chamfer allows for easy entry and fast cutting in badly offset and burnt holes.
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BRIDGE REAMERS: Bridge Reamers are designed for use in structural steel, in the building industry, bridge erection, and ship construction. The cutting end of the flutes is tapered therefore allowing the reamer not only to enter overlapping holes but also permits insertion into very badly misaligned holes. Bridge Reamers are commonly used in portable electric or pneumatic machines.

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