Specifications and Blade Types

OBJECTIVE: give basic facts on the reciprocating saw tool.

By: Phuong Dinh

Points of Discussion• Definitions

• Types of Reciprocating Saws

• Main Types of Blades Available

Definitions• Reciprocating: an alternating forward and reverse

motion• Saw: any tool that is hand or power driven composed

of a sharp metal blade used to cut materials• Motor: a device that converts any form of energy into

mechanical energy• No Load Speed: range of possible speeds of the

blade measured in strokes per minute. • Blade Stroke: distance covered by the blade per half-

cycle• Shank Capacity: the maximum blade height that can

be fitted into the unit.

Types of Reciprocating Saw

Mastercraft

Cordless (Battery)

Electric Model

Air Model (Industrial

Applications)

Motor 14.4 V 120 V 90 psi- air pressure

No Load Speed

0-3000 spm 0-2800 spm 0-10 000 spm

Blade Stroke

7/8 inch 1 ¼ inch 1 1/8 inch

Shank Capacity

½ inch blade clamp

standard blade clamp

standard blade clamp

Main Types of Blades Available• 3” to 12” in length, thickness and heights varies• TPI (teeth per inch): ranges from 3 to 18- more

teeth allow a smoother cut but slower• Teeth may vary in shape- granular, wavy,

triangular…

1. Bi-Metal – composed of two types of metals, high durability (some strong ones are composed of 8 % cobalt)

2. Carbide Steel Coated - used on extremely hard or abrasive materials such as cement and tile

3. Tungsten Carbide Tipped (Granulated with carbide) – fast cutting for wood, plastic, fiberboard…

Summary• Blade stroke, TPI, no load speed are some

terms applicable to other things.

• Many types of blades available such as: fire & rescue bi-metal, u-shank bi-metal, demolition bi-metal… with its own unique design for a unique task

REFERENCEhttp://www.masonrymagazine.com/10-05/sawblades.htmlhttp://www.mkmorse.com/recips.htmlhttp://www.workbenchmagazine.com/main/recip-saw.htmlhttp://www.csunitec.com/saws/recip_cat.htmlhttp://www.toolprice.com/product/8376Nhttp://www.handsontools.comhttp://www.dictionary.comhttp://www.toolbarn.com/category/elecrecipsaw/http://www.sears.com/sr/javasr/product.do?BV_UseBVCookie=Yes&vertical=SEARS&sid=I0033900150001800085&pid=00919668000Craftmaster Manual Guidehttp://news.thomasnet.com/fullstory/463506/rss/1106