Reamer Bits

When completing high-performance projects that require the forming of precise holes in or through materials, the sides of the hole may require additional work to ensure they are completely smooth. In this case, reamers are designed to completely smooth the hole to a high degree of accuracy.


Due to the removal of the uneven material, reaming will slightly enlarge the hole you have created, therefore making it advisable to form the initial hole fractionally smaller to allow for the reaming space – this is called the allowance. It is recommended that the drilled hole should not be enlarged by more than 5% of the drilled diameter.


Typically made from carbide or high-speed steel (HSS), these multi-edged rotary cutting tools are used in metalworking for enlarging and finishing holes to a high level of precision and accuracy.


What types of reamer are there?


At RS Components, we have both machine reamer bits and hand reamer bits. The main difference between the two is that hand reamer bits have a longer taper or lead in at the front end of the bit, which compensates for the difficulty of using hand power alone.


Straight reamer bits are used to make only minor enlargements to holes, typically ones used for the force-fitting of location dowel pins or for unthreaded shoulder bolts.


With helical/spiralled reamer bits, a clockwise reamer will pull any debris up and out of a blind hole, whereas an anti-clockwise reamer will push debris forward, which can be helpful when creating a through-hole.


A tapered reamer is used to make a tapered hole for a tapered pin, which is a self-tightening device due to the shallow angle of the taper. They are commonly used in aircraft assembly and may only be re-reamed a small number of times during an aircraft’s career.


Combination reamers have two or more cutting surfaces, cut to resemble the part’s multiple internal diameters. Using combination reamers reduces the number of separate operations as well as precisely creating relative depths and diameters.


Adjustable reamers consist of several blades along a tapered groove that can be adjusted to cover a small range of hole sizes. They are restricted to light usage due to the absence of any spiral in the flute, meaning they will only remove minimal material for each diameter setting, and cannot be used in holes that have an axial split.


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Omschrijving Prijs Shank Type Diameter Overall Length Material
RS-stocknr. 394-263
FabrikantRS PRO
€ 53,40
Each
Aantal stuks
Straight 6.5 → 7mm 85 mm HSS
RS-stocknr. 394-302
FabrikantRS PRO
€ 119,54
Each
Aantal stuks
Straight 19 → 21mm 180 mm HSS
RS-stocknr. 394-291
FabrikantRS PRO
€ 95,72
Each
Aantal stuks
Straight 17 → 19mm 170 mm HSS
RS-stocknr. 394-289
FabrikantRS PRO
€ 80,53
Each
Aantal stuks
Straight 12.75 → 13.75mm 145 mm HSS
RS-stocknr. 394-267
FabrikantRS PRO
€ 65,19
Each
Aantal stuks
Straight 10 → 10.75mm 125 mm HSS
RS-stocknr. 188-2507
FabrikantRS PRO
€ 41,40
Each
Aantal stuks
Morse Taper 3/8in 127 mm HSS
RS-stocknr. 188-2504
FabrikantRS PRO
€ 56,28
Each
Aantal stuks
Morse Taper 16mm 167 mm HSS
RS-stocknr. 188-2503
FabrikantRS PRO
€ 48,27
Each
Aantal stuks
Morse Taper 14mm 152 mm HSS
RS-stocknr. 394-273
FabrikantRS PRO
€ 54,25
Each
Aantal stuks
Straight 7 → 7.75mm 90 mm HSS
RS-stocknr. 394-295
FabrikantRS PRO
€ 89,96
Each
Aantal stuks
Straight 15.25 → 17mm 165 mm HSS
RS-stocknr. 188-2506
FabrikantRS PRO
€ 75,10
Each
Aantal stuks
Morse Taper 26mm 184 mm HSS
RS-stocknr. 188-2502
FabrikantRS PRO
€ 45,46
Each
Aantal stuks
Morse Taper 12mm 152 mm HSS
RS-stocknr. 188-2501
FabrikantRS PRO
€ 41,40
Each
Aantal stuks
Morse Taper 10mm 127 mm HSS
RS-stocknr. 188-2508
FabrikantRS PRO
€ 45,46
Each
Aantal stuks
Morse Taper 1/2in 5-15/16 in HSS
RS-stocknr. 188-2477
FabrikantRS PRO
€ 96,22
1 Set
Set(s)
Straight 14 mm, 18 mm, 22 mm 105 mm HSS
RS-stocknr. 188-2505
FabrikantRS PRO
€ 69,64
Each
Aantal stuks
Morse Taper 22mm 184 mm HSS
RS-stocknr. 394-239
FabrikantRS PRO
€ 141,70
Each
Aantal stuks
Straight 21 → 23mm 85.72 mm HSS
RS-stocknr. 394-285
FabrikantRS PRO
€ 87,51
Each
Aantal stuks
Straight 13.75 → 15.25mm 150 mm HSS
RS-stocknr. 188-2509
FabrikantRS PRO
€ 75,10
Each
Aantal stuks
Morse Taper 1in 7-1/4 in HSS
RS-stocknr. 394-279
FabrikantRS PRO
€ 74,35
Each
Aantal stuks
Straight 11.75 → 12.75mm 130 mm HSS
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