Free Next Day Delivery
on orders over £59 ex vat*

Expert Technical Team
Get advice on 01924 869 615

Same Day Despatch
On orders placed up to 5.45pm

MAIN STYLE TAGS

MOBILE VIEW HTML

Rich Mill RM4 90° Milling System

With strong inserts & 4 cutting edges for cost-effective machining

The most economical 90° Korloy milling system, with inserts double the thickness of similar systems

★★★★☆

Diameter
Range (mm)

Insert
Sizes (mm)

Metal Removal
Rates

Material Versatility

Surface
Finish

High Accuracy Machining

Square Shoulder Milling

Chip
Control

14-160 10 & 15 ★★★★☆ ★★★★☆ ★★★★☆ ★★★☆☆ ★★★★☆ ★★★★☆

Browse the Range

Rich Mill RM4
90° End Mill

Application
Diameters 14-63mm

Double core geometry for slotting and profiling, long tool life and best all-round performance

Rich Mill RM4
90° Face Mill

Application
Diameters 40-160mm

Best for profiling offering high feed rates and tool stability

Rich Mill RM4
90° Screwed Shank End Mill

Application
Diameters 20-63mm

With 45° chamfer preparation for
added corner protection

Rich Mill RM4Z
90° Plunge End Mill

Application
Diameters 25-40mm

Double core geometry for slotting and profiling, long tool life and best all-round performance

Rich Mill RM4Z
90° Plunge Face Mill

Application
Diameters 40-100mm

Best for profiling offering high feed rates and tool stability

Rich Mill RM4Z 90°
Screwed Shank Plunge End Mill

Application
Diameters 25-40mm

With 45° chamfer preparation for
added corner protection

Advantages

Economical Milling

Double sided insert gives 4 usable cutting edges, offering long-term savings

Through Coolant

Reduces cutting heat for improved chip control and tool life

Wide Application Range

Ideal for shoulder milling, facing, helical cutting & ramping

Metal Removal

Extra thick negative insert design for large depths of cut and high feed rates

Features

RM4Z Plunge Milling

Horizontally mounted inserts offer large depth of cut in plunge milling

High Rake Angle

High rake chipbreaker combined with strong cutting edge for long tool life

Lightweight Machining

Versatile system with chipbreakers for lightweight machine tools

Insert Mounting

Vertically mounted inserts give large depth of cut in shoulder and face milling

Rich Mill RM4 Inserts

Insert Designation:

 

LNMX - Standard Tolerance
LNEX - Ground Tolerance & Non-Ferrous

Rich Mill RM4 inserts are double sided and feature 4 cutting edges in total.

The high rake angle chip breaker and step design improves chip control and reduces cutting load.

The unique cutting edges ensure better surface roughness.

Chip Breaker Guide

Chipbreaker Cutting Edge Application Description
MA Aluminium Optimal cutting edge, high positive rake and buffed surface prevents built up edge and smooth chip flow in aluminium machining
MF Light Cutting / Finishing / Soft Steel Chip breaker with low cutting load and sharper cutting edge. Excellent for finishing operations, general milling of soft steels and also ideal for low power machines due to low cutting resistance
MM General Machining Optimal for milling in general machining conditions

Grade Guide

Grade Chipbreaker Materials Features & Benefits
PC3700 MM
MF
Steel <40 HRC
Dedicated steel grade for continuous-light interrupted cutting at medium-high surface speeds. Provides advanced performance & maximum efficiency.
PC5300 MM
MF
Steel <40 HRC
Stainless Steel
HRSA's
Cast Iron
General PVD coated grade with high toughness for longer tool life. Suitable for light-heavy interrupted cutting at medium-high surface speeds.
PC5400 MM
MF
Steel <35 HRC
Stainless Steel
HRSA's
Cast Iron
General purpose grade with excellent wear resistance & surface roughness when low speed machining. Ideal for continuous-heavy interrupted cutting.
PC6510 MM
MF
Cast Iron
Specialised grade for multi-purpose milling applications of cast iron. Suitable for continuous-light interrupted cutting at medium-high surface speeds.
PC9530 MM
MF
Stainless Steel
Ultra fine substrate for medium & roughing in stainless steel milling. Ideal for high feed continuous-light interrupted cutting.
H01 (Uncoated) MA
Non-Ferrous
Dedicated non ferrous grade for high speed, high feed milling & mirror surface finish. Uncoated polished grade for maximum swarf control in medium-high speed cutting.

Application

Material Suitability

Material Excellent Good
P
Steel
H
Hardened Steel
M
Stainless Steel
S
HRSA's
K
Cast Iron
N
Aluminium & Non-Ferrous

Possible Machining Methods

Face Milling

Trochoidal Milling

Side Cutting

Slotting

Circular Interpolation

Downloads

Full Product PDF

Cutting Data PDF