15% Discount: Alvord Polk 131-2 High-Speed Steel Chucking Reamer, Left Hand Spiral Flute, Taper Shank, Uncoated Finish, Size: 1/2 Inch

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Description

The Alvord Polk 131-2 left-hand spiral flute chucking reamer (also called a machine reamer) is a self-holding taper shank tool made of high-speed steel with no finish or coating, and is most commonly chosen for reaming interrupted cuts. This tool can be used in a drill press, screw machine, lathe, or other good-quality toolholder.

Left-hand spiral reamers are useful for interrupted cuts and in through holes. Spiral reamers prevent whole flute contact with the leading edge in an interrupted cut, as in a keyway. This prevents damage to the interruption and reamer flute. Left-hand spiral style tools also push chips ahead of the tip of the tool, instead of pulling chips out of a hole. Left-hand spiral reamers are also useful for reaming through holes, since pushing chips into the hole can cause clogging, which may damage the tool. Taper shank tools can be self-holding or self-releasing based on the degree of taper – small tapers are self-holding within the toolholder, while large tapers are self-releasing and will easily release from the toolholder. The end of Morse taper shank tools (held in a toolholder) is tapered to ensure accurate alignment of the tool in its socket and is self-holding (friction between the tool and the tool-holder prevents slippage). Morse taper is one of the most widely used standards for self-holding tapers.

For reamers in the 131-2 series with 0.0280 – 0.1561 inches diameter there are four flutes, for 0.1562 – 0.5220 inches diameter there are six flutes, for 0.5221 – 0.8820 inches diameter there are eight flutes, for 0.8821 – 1.1950 inches diameter there are 10 flutes, and for 1.1951 – 1.5000 inches diameter, there are 12 flutes. Tolerances are +0.0002 -0.0000 inches for all reamers in the 131-2 series.

Reamers are used to finish existing holes. When holes are created using common applications like drilling or punching they often have minute imperfections. Their roundness may be flawed, or their diameter may be slightly smaller than required. Reamers are made to exacting tolerances, so they can correct such errors and create precisely round holes of exacting dimensions. Reaming is often used before tapping screw threads.

Alvord Polk manufactures a broad family of cutting tools, brushes, and tooling components, following ISO 9001 standards for quality and environmental impact of their products. Their offices and manufacturing facilities have been located in the United States since 1881.

Specifications

Model

02144

Finish Types

Uncoated (Bright)

Flute Length

2 inches

Part Number

02508

Shank Width

8 inches

Brand Name

Alvord Polk

Number of Flutes

6

Cutting Direction

Right Hand

Material Type

High Speed Steel

Outside Diameter

0.5000 inches

UPC

662783025085

Size Name

1/2 in

Flute Type

left hand spiral

EAN

0662783025085

Shank Type

Morse Taper

System of Measurement

Inch

Overall Length

8 inches

Features

Details

Shipping Weight

0.35 pounds

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