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Small-Diameter 90° Square Shoulder Inserts

JDMT070204 & JDMT070208 Small-Diameter Square Shoulder Milling Inserts

Compare JDMT070204 and JDMT070208 by corner radius, dimensions and five grade options. The supplied ASM07 cutter range specifies JDMT070208 for compact Ø8–16 mm shoulder, side, step and profile milling.

View JDMT Specifications Match ASM07 Cutters Compare JDMT and LPGT Request Pricing

ASM07 is confirmed for JDMT070208 in the supplied cutter data. JDMT070204 has the same core dimensions but must be checked separately for corner clearance and pocket compatibility.

JDMT070204 and JDMT070208 carbide milling inserts

JDMT070204 and JDMT070208 inserts

JDMT070204 and JDMT070208 insert dimension drawing

JDMT dimensions: L, W, T, D and RE

Insert ModelsJDMT070204 and JDMT070208

Core SizeL 6.40 × W 4.3 × T 2.45 mm

Corner RadiusRE 0.4 or 0.8 mm

Relief Direction15° positive-relief platform

Grade OptionsD530, D570, D580, D7320 and D9920S

Confirmed CutterJDMT070208 → ASM07

Browse by Corner Radius

JDMT070204 and JDMT070208 Models

Both models use the same length, width, thickness and hole size. The final two digits identify the corner radius.

JDMT070204

RE 0.40 mm

Smaller corner radius for tighter internal corners and generally lower cutting load at the tip. Confirm the cutter pocket before use.

View 070204 specifications

JDMT070208

RE 0.80 mm

Larger corner radius with more material behind the edge. This is the model specified for the ASM07 cutter range.

View ASM07 compatibility

Insert Identification

What Is a JDMT Milling Insert?

JDMT is a compact positive-relief indexable milling insert used in small-diameter shoulder-milling systems.

The complete designation identifies a manufacturer-specific shape family, relief direction, tolerance, clamping form, size and corner radius. Similar JDMT0702 inserts may differ in radius, edge geometry or pocket details, so the complete code should be retained.

JShape / Family CodeManufacturer-specific compact insert form

D15° ReliefPositive side-clearance direction

MM ToleranceDimensional tolerance class

TClamping FormHole and type configuration

JDMT070208 is the confirmed ASM07 insert in the supplied cutter range. Treat JDMT070204 as a separate radius option until the exact pocket clearance is verified.

Dimensions and Grade Options

JDMT070204 and JDMT070208 Specifications

The two inserts use identical L, W, T and D dimensions. The corner radius changes from 0.40 to 0.80 mm.

Dimension Guide

LOverall insert length WInsert width TInsert thickness DMounting-hole diameter RECorner radius Relief15° direction

The same core dimensions do not prove complete interchangeability. Corner clearance and the exact cutter pocket still need confirmation.

Complete Designation	L (mm)	W (mm)	T (mm)	D (mm)	RE (mm)	Relief	Grade Options	Cutter Direction
JDMT070204	6.40	4.3	2.45	2.15	0.40	15°	D530D570D580D7320D9920S	Confirm the exact cutter pocket and corner clearance
JDMT070208	6.40	4.3	2.45	2.15	0.80	15°	D530D570D580D7320D9920S	ASM07 confirmed in the supplied cutter range

RE 0.4

Smaller Corner Radius

Produces a tighter workpiece corner and generally lowers tip engagement. Confirm the required shoulder geometry and feed.

RE 0.8

Larger Corner Radius

Provides more edge support and is the radius specified for the ASM07 cutter range.

Carbide Grade Direction

JDMT Grade Options

Select only a grade available for the complete JDMT model, then confirm the workpiece material, machine stability, coolant and observed wear.

D530

Toughness-oriented supplier grade for interrupted or less stable cutting conditions.

D570

Balanced supplier grade for general steel and selected stainless-steel milling.

D580

Wear-resistance direction for stable milling and selected cast-iron applications.

D7320

General-purpose catalogue option; confirm the complete material recommendation before use.

D9920S

Special catalogue option for demanding materials or wear conditions; verify the exact recommendation.

ASM07 small-diameter square shoulder cutter for JDMT070208 inserts

Cutter Compatibility

Match JDMT070208 Inserts to ASM07 Cutters

The ASM07 range uses JDMT070208 in compact Ø8–16 mm right-angle milling holders. Confirm diameter, shank, flute count, total length and the complete cutter code.

Ø8–9 mmOne-flute holders, 8 mm shank and 100 mm total length.

Ø10–11 mmTwo-flute holders, 10 mm shank and 100 mm total length.

Ø12–13 mmTwo- or three-flute holders, 12 mm shank and 120 mm total length.

Ø14–16 mmThree- or four-flute holders with 14 or 16 mm shanks.

The supplied cutter range specifies JDMT070208, M1.8 clamping screws and a T6 wrench.

View ASM07 Models Send Your ASM07 Cutter Code

ASM07 Cutter Model	Teeth	Cutter ØD (mm)	Shank Ød (mm)	Total Length (mm)	Blade Length (mm)	Insert	Screw	Wrench
ASM07 08-S8-100	1	8	8	100	20	JDMT070208	M1.8	T6
ASM07 09-S8-100	1	9	8	100	20	JDMT070208	M1.8	T6
ASM07 10-S10-100-2T	2	10	10	100	20	JDMT070208	M1.8	T6
ASM07 11-S10-100-2T	2	11	10	100	20	JDMT070208	M1.8	T6
ASM07 12-S12-120-2T	2	12	12	120	20	JDMT070208	M1.8	T6
ASM07 13-S12-120-2T	2	13	12	120	20	JDMT070208	M1.8	T6
ASM07 12-S12-120-3T	3	12	12	120	20	JDMT070208	M1.8	T6
ASM07 13-S12-120-3T	3	13	12	120	20	JDMT070208	M1.8	T6
ASM07 14-S14-120-3T	3	14	14	120	25	JDMT070208	M1.8	T6
ASM07 15-S14-150-4T	4	15	14	150	25	JDMT070208	M1.8	T6
ASM07 16-S16-150-4T	4	16	16	150	25	JDMT070208	M1.8	T6

JDMT070208 insert for small-diameter square shoulder milling

Milling Applications

JDMT070208 Shoulder Milling Applications

The strongest positioning is compact 90° shoulder, side, step and profile milling. Entry and full-slot capability must be confirmed for the exact ASM07 body.

90° Shoulder Milling

Machine compact floors and vertical walls with a compatible ASM07 cutter body.

Shoulder milling tools

Side Milling

Machine side faces and contours after checking holder clearance and radial engagement.

Step Milling

Create small steps and shoulders using the required cutter diameter and flute count.

Pocket and Profile Milling

Use for open-pocket and profile work where a compact right-angle cutter is required.

Ramping, helical entry, plunging and full-slot capability depend on the exact cutter-body design and cutting-data sheet.

Application Comparison

JDMT vs LPGT Small-Diameter Milling Inserts

Choose JDMT for square-shoulder geometry and LPGT for small-diameter high-feed roughing. The two insert and cutter systems are not interchangeable.

JDMT0702 + ASM07Primary direction: 90° shoulder, side, step and profile milling.Corner radius: RE 0.4 or 0.8 mm.Cutter range: Ø8–16 mm ASM07 holders.

LPGT010210ER + MFHPrimary direction: small-diameter high-feed and cavity roughing.Corner radius: RE 1.0 mm.Cutter range: Ø8–16 mm MFH holders.

View LPGT010210ER Inserts

Selection rule: use JDMT when a 90° wall is the priority; use LPGT when high-feed roughing and restricted access are the priority.

Selection Checklist

How to Choose a JDMT Insert

1Confirm the Cutter BodyRecord the complete ASM07 or other cutter model and pocket.

2Select the Corner RadiusChoose RE 0.4 or RE 0.8 according to the workpiece corner and edge-strength requirement.

3Verify DimensionsCheck L, W, T, D and RE against the existing insert or drawing.

4Select the GradeChoose from the listed grades using the verified material and wear condition.

5Send Cutting DetailsProvide material, depth, radial engagement, cutter code, quantity and current failure mode.

Frequently Asked Questions

JDMT Milling Insert FAQ

What is the difference between JDMT070204 and JDMT070208?

Both use the same L, W, T and D dimensions. JDMT070204 has a 0.4 mm corner radius, while JDMT070208 has a 0.8 mm corner radius.

Which JDMT insert fits the ASM07 cutter range?

The supplied cutter data specifies JDMT070208 for the listed ASM07 Ø8–16 mm holders.

Are JDMT070204 and JDMT070208 automatically interchangeable?

No. Their core dimensions are the same, but the different corner radius may affect pocket clearance and the generated workpiece corner. Confirm the actual cutter body.

What screw and wrench does ASM07 use?

The supplied ASM07 cutter range specifies an M1.8 clamping screw and T6 wrench.

Which grades are listed for the JDMT inserts?

The page lists D530, D570, D580, D7320 and D9920S for both JDMT070204 and JDMT070208.

What is the difference between JDMT and LPGT inserts?

JDMT is positioned for small-diameter square-shoulder milling with ASM07 cutters, while LPGT010210ER is positioned for small-diameter high-feed roughing with MFH cutters.

Request Pricing

Request JDMT Insert Pricing and ASM07 Compatibility Review

Provide the complete insert and cutter details so the corner radius, grade, pocket fit and hardware can be checked.

Complete JDMT070204 or JDMT070208 designation ASM07 cutter model, diameter, shank, total length and teeth count Workpiece material, hardness and machining operation Cutting depth, radial engagement, coolant and current wear problem Required quantity and need for M1.8 screws or T6 wrench

JDMT070204 & JDMT070208 Small-Diameter Square Shoulder Milling Inserts