Boring Bar, 3/8" Indexable, 80 Deg HSS Diamond Inserts, A R Warner Kit #13

3/8" diameter, 5" long boring bar
3 CEMW-21.5.5 high speed steel inserts
1 extra Torx screw
1 wrench

Part Number: 4788
Weight: 0.53 lb

Price: $124.95

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This Arthur R. Warner Co. precision boring bar uses high speed steel inserts. Combine the advantages of high speed steel cutting tools with the convenience of indexable tooling.

The minimum boring diameter is 0.330".

The Arthur R. Warner Co. is a family-owned American manufacturer of high speed steel products with specialization in cutting, shaping, pre-grinding, heat treating, and finish grinding of premium grades of flat high speed steel. Their quality is excellent and LittleMachineShop.com is proud to carry their products.

Chris' Tips

Chris' Tips

ABOUT A.R. WARNER

The Arthur R. Warner Co. is a family-owned American manufacturer of high-speed steel products with specialization in cutting, shaping, pre-grinding, heat treating, and finish grinding of premium grades of flat high-speed steel (and tool steel).

Our Indexable Turning Tool Set was first introduced in July of 1998. Since the introduction, we have expanded our sizes of Turning Tool Sets, introduced 2 sizes of Indexable Boring Bar Kits, a Profiling Kit and a Threading Kit with the appreciated input from numerous Home Shop Machinists.Our latest kits, designed for grooving, have been very well received in both hobbiest and manufacturing markets.

Our kits contain T-15 HSS throw-away inserts. Most machinists are familiar with "Steel" toolbits and Carbide inserts, and now they can achieve the convenience of indexability while using a cutting material which is typically better suited for their smaller lathes and milling machines. Overall, we consider T-15 HSS to be the best grade of readily available HSS for wear resistance, toughness, and hot hardness.

Use T-15 HSS for:

Interrupted Cuts
Underpowered Spindles
Gummy material like stainless, aluminum, and brass
Less than rigid setups

Make sure you get the correct inserts and retaining screws for your indexable turning tools.

Our chart of indexable inserts shows which inserts and which screw to use with each of our indexable tools.

Here's a video that talks about high speed steel tooling.

Specifications

Specifications
Overall Length	5.0" (127 mm)
Minimum Bore	.330
Lead Angle	5°
Insert Relief	20°
IC	0.250" (6.35 mm)
Insert Thickness	0.093" (2.36 mm)
Insert Hole	0.110" (2.79 mm)
Insert Top Opening	0.146" (3.71 mm)
Insert Radius	0.008" (0.20 mm)
Screws	CO-2205 S
Wrench	T-7

Compatibility

Compatibility

This product works with these LittleMachineShop.com products:

AUGUST MINI LATHE SALE!!!

Boring Bar, 3/8" Indexable, 80 Deg HSS Diamond Inserts, A R Warner Kit #13