SumiReamer SR
Carbon Steel/ Alloy Steel up to 0.28%
Carbon Steel/ Alloy Steel from 0.29%
Hardened Steel up to 45HRC
Stainless Steel
Tempered Steel
Ductile Cast Iron
Aluminum Alloy
Copper Alloy
Cast Iron
Insert for SR Reamer
● SRG General-Purpose Straight Flute: Stop and Through Holes
Fig 1
Fig 2
CW
CW
J
Stop Hole
Conceptual Image of Chip Evacuation
A01 Type
C01 Type
S02 Type
Through Hole
Chips Evacuated Toward Front
Standard Type
Good Surface Roughness
Good Straightness
: Worldwide Warehouse Item
SR Reamer Insert Identification
Specifying Inserts Using Workpiece Hole Diameter Tolerance The actual desired reamer diameter will be on the upper limit side of the median work tolerance, and will differ depending on diameter/tolerance range/grade. Contact Sumitomo Engineering Department for more details. (1) SR G 18.2 + 20 - 10 - A01 - F05 12R 1 (2) (3) (4) (5) (6) (7) (1) SR Reamer
Specifying Inserts Using Desired Reamer Diameter By adding a "Q" after the diameter, it is possible to specify exact desired reamer dimensions. Uncoated types are available within ±2μ, thin-coated layer types are available within ±3μ and thick-coated layer types are available within ±4μ. ① SRL 18.2 Q + 3 - 3 - A01 - F0512R1 ② ③ ④ ⑤ ⑥ ⑦ (1) SR Reamer (2) G = Straight, L = Lefthand helix (3) Median Desired Cutting Edge Diameter (mm) (4) Tolerance (μm) +/- (5) Approach Angle Code (6) Grade Symbol (7) Coating Code
(5) Approach Angle Code (6) Grade Symbol (7) Coating Code
(2) G = Straight, L = Lefthand helix (3) Workpiece Bore Diameter (mm) (4) Tolerance (μm) +/- or standard (e.g. H7)
J154
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