Taper Pin Drill Size Chart

Taper pin reamer hand taper pin reamer with square end tapered cut british made used for reaming tapered holes in work to receive 148 taper in bs122 for inch sizes or 150 taper in din 9a for metric sizes. Taper pin drills have chipbrealers throughout the cutting edge and have special web and helix construction.

An386 Taper Pin

Materials to receive 150 taper pins din1 and din7178 metric sizes.

Taper pin drill size chart. To approximate the drill size needed to drill the new shaft drop the existing tapered pin or better yet a new pin into the pulley and mark the small side of the pin in the bore where it re enters the pulley hub. Pin number basic diameter large end major diameter d end crown radius r pin length l drill size inches approx. End of the pin is the size for the through drill.

Taper pin drills taper pin drill inch sizes taperpin drills metric sizes drill hss taperpin drills hss 332 to 78 taper pin drills hss metric sizes 25mm to 13mm taper pin drills hss taper pin straight shank tapered drills right hand taper pin drills with plain end tapered cut with chipbreakers throughout the cutting edge. Of taper pin diameter large end d approx. Size d 1st drill thru size second drill size depth 70 00625 116.

There is likely no correct drill size as the existing hardware has been reamed with a tapered reamer. Diameter large end d. Standard taper pins sizes 11 14 turning thread rolling if threaded nominal diameter nominal length.

The nominal diameter of imperial pins is. High speed steel metric taper pin drillreamers are designed to drill and ream tapered holes in metal to t taper pins in. 2 to find the number and sizes of drills to be used to step drill holes prior to reaming taper pin hole to fit standard taper pins use the chart on page 1 to to find the length of pin to be used.

Max min max min 60 0078 564 0079 0078 0088 0068. American standard taper pins no. Tapered pin drills are used for drilling tapered holes in solid materials prior to using the appropriate reamer to finish the hole.

Taper pin drills metric in 2mm 25mm 3mm 4mm 5mm 6mm 8mm 10mm 12mm 13mm taper pin drills hss straight shank tapered drills metric sizes 150 taper to din 1858a. Step drilling and using straight fluted reamers have specific requirements. Range of lenghts l.

Diameter large end d. Metric taper pin reamers and metric taper pin drill reamers author. Ics cutting tools subject.

Ramge of lenghts l.

Metric System Conversion Online Charts Collection