HSS Adjustable Expanding Hand Reamers and Pilots

adjustable reamer

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Reamers | Pilots | Info

Adjustable Hand Reamers are versatile tools each capable of reaming a series of odd sized holes over a limited range of adjustment which goes from about 0.31 in (0.8 mm) in the smaller diameters up to around 0.593 in (15.0 mm) in the larger sizes.


Adjustment is easily done with two screwed collars which raise or lower the cutting blades by moving them along tapered seatings.

They are locked in position when the required diameter is reached.


Note that replacement blades are always supplied and fitted as a matched set.


adjustable reamer

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4 blades Adjustable Hand Reamers
   Range

 L1

 L2
Expansion
inch
Sq. A
inch
   inch metric inch metric inch metric
R.HV
1/4-9/326.35-7.14 1-11/3234.133-1/482.551/320.117
R.HW
9/32-5/167.14-7.94 1-1/3234.133-1/288.901/320.129
R.HZ
5/16-11/327.94-8.731-1/238.104-1/8104.781/320.152
R.HY 11/32-3/88.73-9.521-1/238.104-3/8111.121/320.152

6 blades Adjustable Hand Reamers
   Range  L1  L2 Expansion
inch
Sq. A
inch
   inch metric inch metric inch metric
R.H-1 3/8-13/32 9.52-10.31 1-1/2 38.10 4-3/4 120.65 1/32 0.176
R.H-2 13/32-7/16 10.31-11.11 1-1/2 38.10 5 127.00 1/32 0.187
R.H-3 7/16-15/32 11.11-11.90 1-5/8 41.28 5-1/4 133.35 1/32 0.211
R.H-4 15/32-17/32 11.90-13.49 1-5/8 41.28 5-1/2 139.70 1/16 0.234
R.H-5 17/32-19/32 13.49-15.08 1-13/16 46.04 5-3/4 146.05 1/16 0.258
R.H-6 19/32-21/32 15.08-16.66 2-1/16 52.39 6-1/2 165.10 1/16 0.281
R.H-7 21/32-23/32 16.66-18.25 2-3/16 55.56 6-3/4 171.45 1/16 0.316
R.H-8 23/32-25/32 18.25-19.84 2-1/2 63.50 7 177.80 1/16 0.363
R.H-9 25/32-27/32 19.84-21.43 2-5/8 66.68 7-3/8 187.32 1/16 0.422
R.H-10 27/32-15/16 21.43-23.81 3 76.20 8 203.20 3/32 0.445
R.H-11 15/16-1-1/16 23.81-26.98 3-1/4 82.55 9 228.60 1/8 0.492
R.H-12 1-1/16-1-3/16 26.98-30.16 3-3/8 85.72 10 254.00 1/8 0.562
R.H-13 1-3/16-1-11/32 30.16-34.13 3-7/8 98.42 11 279.40 5/32 0.562
R.H-14 1-11/32-1-1/2 34.13-38.10 4-1/4 107.95 12 304.80 5/32 0.656
R.H-15 1-1/2-1-13/16 38.10-46.03 4-7/16 112.71 14 355.60 5/16 0.797
R.H-16 1-13/16-2-7/32 46.03-56.35 4-7/8 123.83 16 406.40 13/32 1.031
R.H-17 2-7/32-2-3/4 56.35-69.85 5 127.00 18 457.20 17/32 1.312
R.H-18 2-3/4-3-11/32 69.85-84.93 5-1/4 133.35 20 508.00 19/32 1.500

 

OPERATION


Adjustment is a simple operation carried out by the loosening of one nut while tightening the other, thus allowing the blades to progress along the taper bottomed slots resulting in an increase or decrease in the Reamer diameter according to the direction of adjustment.


ADJUSTABLE HAND REAMERS


The Adjustable Hand Reamer is designed to fulfil the requirements of a section of the Engineering Industry which has need of a versatile tool capable of reaming a small number of odd size holes.
The Reamer being simple in design and free from complications is easily adjusted to any diameter within the limits of the expansion range and by use of a set of Reamers holes of any size and tolerance from 1/4" to 3-11/32" or 6.35mm to 84.93mm can be obtained.

 

SCREW ON EXTENSION PILOTSreamers pilot

 

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Complimentary to the Adjustable Reamer is a range of Screw-on Extension Pilots designed to meet the demand for an attachment which makes easier the use of the conventional Expanding Hand Reamer when line reaming on such jobs as king pins and piston bushing.


The Screw-0n Extension Pilot is supplied complete with a double-taper sliding Cone Bush and replacement Collar.

When using the Extension Pilot it is essential to ensure that threads of both the Reamer and the Pilot are clean.


The method of fitting the Pilot is a simple operation carried out by removing the front adjustment nut and replacing it with the plain collar with the internal chamfer facing the blades.

Screw on the Extension Pilot and replace the sliding bush using either the long or short taper whichever is the more suitable for the operation in hand.


For inline reaming of two holes, seat the tapered cone supplied into the second hole to be reamed and pass the Pilot through the first hole and locate into the Cone and commence to ream the first hole, to ream the second hole reverse the procedure.

 

pilot dimensions

Part Number L1
inch mm
R.P-HV 4 101.60
R.P-HW 4 101.60
R.P-HZ 4 101.60
R.P-HY 4 101.60
R.P-1 5 127.00
R.P-2 5 127.00
R.P-3 5 127.00
R.P-4 5 127.00
R.P-5 5 127.00
R.P-6 5 127.00
R.P-7 6 152.40
R.P-8 6 152.40
R.P-9 6 152.40
R.P-10 6 152.40
R.P-11 6 152.40
R.P-12 6 152.40
R.P-13 6 152.40
R.P-14 6 152.40
R.P-15 6 152.40
R.P-16 6 152.40
R.P-17 7 177.80
R.P-18 7 177.80

Info

expanding reamer info

SIZE RANGE 1/4" to 3-11/32"


Adjustable Hand Reamers are versatile tools each capable of reaming a series of odd sized holes over a limited range of adjustment which goes from about 0.31 in (0.8 mm) in the smaller diameters up to around 0.593 in (15.0 mm) in the larger sizes.


Adjustment is easily done with two screwed collars which raise or lower the cutting blades by moving them along tapered seatings.

They are locked in position when the required diameter is reached.


Note that replacement blades are always supplied and fitted as a matched set.

link to reamer index page

link to US standard expanding reamers

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