Landis
Thread Cutting - Chasers
Landis has a wealth of experience in designing, making and customizing tangential chasers. All are created to produce better performance, improve productivity, lower costs and boost threading efficiency.
Landis Standard and Non-Stock Chasers are available in a variety of sizes, pitches and throat angles.
The throat of 20º standard "long" throat chasers, normally furnished for use with Lanco heads, starts below the root and are used to trim away scale or nominally excess material on the O.D. The throat of 20º
standard "short" throat chasers start at the root and are supplied for use with Landmatic and Landex heads where the blank is usually prepared to the proper size. Unless otherwise specified, all
"bolt" chasers are supplied with a 22º lip-rake grind suitable threading mild steel. Chasers for threading pipe are furnished with a 22º
straight rake grind 30º and 45º throats are furnished only where the relief or thread run-out is restricted.
Technical Paper:
Tangential Chaser Overview
Technical Paper:
Die
Head Chaser Management
Specifications: Landis
Chaser System
Chaser Grinding Fixture
For use on surface, universal tool, and cutter grinders,
the No. 15 and No. 20 fixtures are used to grind the cutting angles on Landis die head chasers.
The No. 15 die head chaser fixture and No. 15T tap chaser
fixture use a common base which allows the same fixture, when appropriate auxiliary equipment is added, to grind
both types of chasers.
Capacity
| No. 15 |
1/2" to 1-1/4" wide die head chasers |
| No. 20 |
7/8" to 4-3/8" wide die head chasers |
| No. 15T |
tap chasers for 1" to 12" size tap heads |
Diameter
Threads
