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PWLNL 2525M08 EXTERNAL TOOLHOLDER
Indexa Lever Lock External Toolholders – PWLN R/L
95° approach for negative 80° trigon inserts.
Out of stock
SKU : IND1064130K
Indexa Lever Lock External Toolholders – PWLN R/L
95° approach for negative 80° trigon inserts.
Specification :
Brand : Indexa
Designation PWLN…. : L 2525M
Dimensions b : 25
Dimensions f : 32
Dimensions h=h1 : 25
Dimensions l1 : 150
Dimensions l2 : 32
eCl@ss Code : 28039190
Overall Weight : 0.72
UNSPSC Code : 23242106
| Weight | 1 kg |
|---|
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ENGINEERS DATA REFERENCEBOOK NOV-08 V2Read moreThe ‘Engineers Reference Handbook’
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9 Sections
194 Pages
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Cutting takes place only on the throat and the first full tooth; the remaining threads are above centre height and act as a nut, ensuring accurate pitch. Ideal for batch work or continuous production of threaded steel bar. Coventry dies are not interchangeable. An original set of new dies must always be used together. When taken from the diehead the set of dies should be retained in its box until required again.
Throat Angles
20° for general work and soft steels – supplied as standard.
33° âBâ type for cutting brass, available on request.Grinding Dies
Only two angles are ground on Coventry dies, the throat angle and the rake angle and in the particular case of Holozone dies only the throat angle is ground. All dies in a set must be ground on the throat at the same time and since they cannot be accurately ground by hand, a die grinding fixture must be used.Marking & Materials
Each die is marked with: diameter, pitch, type of die and gauge number. Non-standard or special dies are marked with an SD number which should be quoted when re-ordering. When a set of dies has been re-ground several times by grinding the throat angle, the height of the cutting edge rises above centre. This condition must be rectified by grinding the rake angle until the die height is correct according to the number shown on the die. -
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20° for general work and soft steels – supplied as standard.
33° âBâ type for cutting brass, available on request.Grinding Dies
Only two angles are ground on Coventry dies, the throat angle and the rake angle and in the particular case of Holozone dies only the throat angle is ground. All dies in a set must be ground on the throat at the same time and since they cannot be accurately ground by hand, a die grinding fixture must be used.Marking & Materials
Each die is marked with: diameter, pitch, type of die and gauge number. Non-standard or special dies are marked with an SD number which should be quoted when re-ordering. When a set of dies has been re-ground several times by grinding the throat angle, the height of the cutting edge rises above centre. This condition must be rectified by grinding the rake angle until the die height is correct according to the number shown on the die. -
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Now with 38 pages of engineering data. Each page coated with an gloss lamination to protect against the dirt and grease encountered in workshop conditions.
Contents:
⢠Basic forms of heat treatment
Colour charts for tempering and for hardening & forging.
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Colour coded machineability chart and hardness listing.
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Shore hardness and equivalent tensile strengths and conversions included.
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Sequenced logically, tapping and clearance sizes integrated into single chart and colour highlighted for quick reference. Includes special metric pitches & NPT, distinctions made between ‘Rp’ and ‘G’ series BSP. ISO 529 pitch form diagrams shown. Now also lists tapping and clearance drill sizes for fluteless tap.
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Comprehensive listing including contemporary listings and illustrations.
⢠Abbreviations used in engineering drawings
⢠Common CNC codes
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Newly added page explaining the use of letter addresses to define directional motion.
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Colour coded CAD produced illustrations for quick reference.
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Comprehensive list of commonly used abbreviations.
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