GTA Square Insert Face Mills

GTA Square Insert Half Side Mills

Geometry Specifications:

Axial: Positive
Radial: Negative
Lead: 1°

GTA Series Half Side Mills free cutting positive geometry accommodates a variety of workpiece materials with precision hardware components that ensure quick accurate insert indexing. The hardened hardware components provide body protection for superior tool durability, and the unique nest design can be used in both right and left hand cutters. These cutters having 1° lead angle generate utilize the standard SPE-43 inserts.

**GTA Half Side Mill - Dimensional Specifications**
Product Number	D	OD	B	H	A	DOC	Insert	Teeth
4GTARH-1-5H	4.000	4.030	1.25	1.31	1°	.375	SPE-43__	8
5GTARH-1-6H	5.000	5.030	1.50	1.31	1°	.375	SPE-43__	10
6GTARH-1-6H	6.000	6.030	1.50	1.31	1°	.375	SPE-43__	12
7GTARH-1-8H	7.000	7.030	2.00	1.31	1°	.375	SPE-43__	14
8GTARH-1-8H	8.000	8.030	2.00	1.31	1°	.375	SPE-43__	16

Milling Cutter Nomenclature

**Parts**
Insert IC & Thickness	Insert Number	Anvil	Anvil	Adjusting Screw	Insert Lock	Lock Screw	Anvil Lock	Lock Screw	Wrench

.500 x .188	SPE-43__	1357R	1357RA	1399	1570	1573	1571	BHCS 10-32 x 1/2	1557-PT8

Insert Nomenclature

**Starting Machining Parameters**
Material	SFPM	FPT	Primary	Secondary
Gray Iron, Class 30	200-500	.005-.012	SPE-432 GR LTC-586XRm	SPE-432 GR LTC-21
Tool Steel, D2	250-350	.005-.012	SPE-432 GR LTC-606jRm	SPE-432B GR LTC-14
Medium Alloy Steel	300-700	.005-.012	SPE-432B GR LT-50	SPE-432B GR M+
Tool Steel, P20	300-700	.005-.012	SPE-432B GR LT-50	SPE-432B GR LTC-14
Soft Alloy Steel	400-800	.005-.012	SPE-432 GR LT-40	SPE-432 GR LTC-14