High Feed Milling 250 Series End Mills are a Multi-purpose positive/negative geometry cutter that optimizes horsepower utilization. This allows you to get the most from your low horsepower machines. Also, this cutter is designed to perform at accelerated spindle speeds. To extend its application range (value), the pockets are designed to accept either the round or the octagon inserts.

High Feed Milling
250 Series End Mills

Geometry Specifications:
Axial: 8° Reverse Dish
Radial: Negative

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250 Series End Mills have an 8 degree reverse dish angle and has a .040 depth of cut with Ramping capabilities.

Strong square insert geometry with 4 cutting edges available in high performance coated carbide to machine most materials or high performance silicon nitride to machine gray cast iron.

Cutter bodies are plated for chip erosion and corrosion resistance and are available in kits.

Also, this cutter is designed to perform at accelerated feeds.

250 Series End Mill Kits Include:
• 1 End Mill
• 10 Inserts
• 1 Torx® driver 1557-TX20
• 1 Tube of Anti-seize
• 5 Extra Set of locking screws

**250 Series End Mill - Dimensional Specifications - click for Kits**
Product Number See Kit Order Number:	D	S	L	A	DOC	Insert	Teeth
250E0125ASP4-S100R	1.250	1.00	6.00	8º	.040	SPEX-436 SPCW-436W820	2
250E0150ASP4-S125R	1.500	1.25	6.00	8º	.040	SPEX-436 SPCW-436W820	3

Milling Cutter Nomenclature

**Parts**
Insert I.C. & Thickness	Insert Number	Insert Number	Torx Screw	Wrench

.500 x .188	SPEX-436		3605-0001-0023	1557-TX20
.500 x .188		SPCW-436W820	SR-16-212	1557-TX20

Use Checkbox Selections for Multi-Select feature to work

Insert Nomenclature

**Starting Machining Parameters**
Material	SFPM	FPT	Max. Depth
Low Carbon Steel	650-750	.020-.060	.040
Alloy Steel	500-600	.020-.060	.040
Austenitic Stainless	550-650	.020-.060	.040
Martensitic Stainless	500-550	.020-.060	.040
Aluminum	1000+	.020-.060	.040
♣ Gray Iron - SPCW	2500-2800	.020-.060	.040
♦ Gray & Ductile Iron - SPEX	750-850	.020-.060	.040
Titanium / Super Alloys	80-150	.020-.060	.040

Steel

Stainless

Cast Iron

Non-Ferrous

High Temp Alloy