ERD
JETMILL BUTTON
Specifications
Button Style End Mill
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Corner Angle
-
Rake Angle
Axial
+8 ~ +10º
Radial
-6º ~ -4º
Work Material
Recommended Grade
Cutting Speed
(sfm)
Feed Rate (ipt)
Plunging operations
All other operations
Carbon Steels
T3030
 400~700
0.002~0.004
0.012~0.020
AH330
 450~800 0.002~0.003 0.008~0.016
Alloy Steels
T3030
 350~650
0.002~0.004
0.008~0.018
AH330
 400~700 0.002~0.003 0.006~0.014
Die Steels
T3030
 250~600
0.002~0.004
0.008~0.014
AH330
 350~650 0.002~0.003 0.004~0.004
Cast Irons
AH120
 400~800
0.003~0.005
0.012~0.022
AH330
 400~800 0.002~0.004 0.010~0.020
Notes:
1. For small depths of cut--less than .080"--use the higher side of the recommended feed rate.
2. Converesely, for larger depths of cut--larger than .125"--use the lower side of the recommended feed rate.
3. When using long shank type (RLU) the cutting feed and speed should be reduced by 40% to reduce chatter.
4. Max plunge depth=.157".
INSERTS <Back to top>
: Stocked Standard Chicago Warehouse
: Stocked Standard Japan Warehouse; shipment within 1 week
ERD CUTTING LIMITATIONS <Back to top>
Cutter
Plunging Depth (d)
Clean-up-Length (L)
Maximum Ramp Angle (θº)
ERD12125RSU/RLU
0.157"
0.817"
16
ERD12150RSU/RLU
1.067"
8
ERD12200RSU/RLU
1.567"
6
Notes:
When z-axis feeding (plunging) please take care to follow the above specifications.

2. When z-axis feeding (plunging) a feed rate of .002"~.004" per tooth should not be exceeded.

3. When z-axis feeding (plunging) a peck feeding operation every .040" should be used to break chips.

4. When slant feeding (ramping) please take care to follow the above specifications.
Cutter
Minimum
Maximum
P
D1
D2
D1
D2
ERD12125RSU
2.00
.750
2.39
1.14
~0.239
ERD12150RSU
2.50
1.00
2.89
1.39
ERD12200RSU
3.50
1.50
3.89
1.89
D:   cutter diameter
D1: hole diameter
D2: helical diameter
P:   maximum depth of cut per helical pass

Notes:
1. When using helical interpolation please take care to follow the above minimum and maximum specifications.
2. The spike that remains on the center of the bottom face should be removed with Traverse-Feed milling during final
     operation.
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HELICAL INTERPOLATION <Back to top>
ERD RECOMMENDED CUTTING CONDITIONS <Back to top>
Cat No.
Stock
# of Teeth
Dimensions (inch)
Insert
Screw
Wrench
Insert
Shank Type
øD
ød
L
L1
L2
ERD12125RSU
2
1.250
1.000
4.781
2.500
2.281
 CSTB-3.5 T-15D RDMT 1204 Weldon
ERD12150RSU
3
1.500
1.000
4.781
2.500
2.281
ERD12200RSU
4
2.000
1.250
4.781
2.500
2.281
ERD12125RLU
2
1.250
1.000
10.000
2.500
7.500
 Straight
ERD12150RLU
3
1.500
1.000

10.000
2.500
7.500
ERD12200RLU
4
2.000
1.250
10.000
2.500
7.500
Milling>>Endmilling>>ERD
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Cat No.
Class
Grades
AH140
AH120
AH330
T3030
RDMT1204ZDPN-MJ
M
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• Inserts
• Recommended Cutting Conditions
• Cutting Limitations
• Helical Interpolation

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