End MillRouterMade in USA

P38-005159-1

Name: RobbJack P38-005159-1 — 4 Flute Solid Carbide Diamond Coated End Mill for Graphite & Composites
Brand: RobbJack
SKU: P38-005159-1
Price: 127.00 USD
Availability: MadeToOrder

4 Flute Solid Carbide Diamond Coated End Mill for Graphite & Composites

4 Flute Diamond Coated Ball End Mill, 0.1250in Dia, 0.125in LOC, 0.125in Shank, 3.0in OAL, 0.625in Reach, 0.0625in Radius

Scaled drawing — true to this tool's dimensions (inch)

Speeds & FeedsDialed to this exact tool — free

Free CAD & DataSTEP 3D DXF 2D ISO CSV CAM library

P38 Lightning Series diamond coated end mills, square end and ball end with reach necks

Lightning Series thin-coat diamond end mills — extra edge sharpness at a graphite-friendly price

Lightning Series diamond coating (DCC) applied thinner than standard: reduced coating thickness increases edge sharpness and reduces cost — a cost-effective solution for machining graphite electrodes
10–20x tool life over uncoated carbide from the CVD diamond coating
2-flute micro sizes from 1/64" and 4-flute sizes from 1/32" to 1/2"; square end, ball end and corner radius (.005"–.062") end styles
Reach-style tools with a 30° typical neck taper for deep-cavity electrode work — e.g. 1/32" dia with up to 29/32" reach, 1/8" dia with up to 2" reach on a 3" OAL
Run dry, with cold air, or spray mist — no coolant required in graphite; also suited to composites, aluminum and plastics (pg 114)
Graphite speeds: soft 1000–2000 SFM, medium 750–1500 SFM, hard 500–1250 SFM, with roughing/finishing chipload-per-tooth tables by diameter (pg 116)
Standard tolerances: cutting dia +0.001/−0.001", shank h6, flute length ±0.060", OAL ±0.060"

From the RobbJack Applications Guide.

About this series

P38 Lightning Diamond Coated Series End Mills

A cost-effective diamond-coated solution for graphite electrodes.

The P38 Lightning Series offers a cost-effective solution for machining graphite electrodes. By reducing the coating thickness, edge sharpness is increased and cost is reduced. Available as 2-flute and 4-flute diamond-coated (DCC) end mills in ball-end, square-end, and corner-radius styles, with a typical 30 degree taper.

Diamond Coated (DCC)
Reduced coating thickness for increased edge sharpness and lower cost
2-flute and 4-flute configurations
Ball-end, square-end, and corner-radius styles
30 degree taper typical

Aluminum, Graphite, Composites, Plastics. Dry, Cold Air, or Spray Mist. Applications: conventional, ramping, high performance, 3-D, roughing, semi-finishing, finishing.

Headline spec

10-20X tool life over carbide

Best for

Machining graphite electrodes
Cost-effective diamond-coated milling of composites and plastics

Specifications

US machining terms with ISO 13399 codes.

Cutting DiameterDC: 0.125″
Shank DiameterDMM: 0.125″
Length of Cut (LOC)APMX: 0.125″
Reach (LBS)SDL: 0.625″
Neck DiameterND: 0.1187″
Overall Length (OAL)OAL: 3″
Corner RadiusRE: 0.0625″
Number of FlutesNOF: 4
Blend Angle (neck→shank): 15°
Feather Blend: 10°
End Type: Ball End
Center Cutting: Yes — plunges
Series: P38-4 — 4 Flute Solid Carbide Diamond Coated End Mill for Graphite & Composites