CoroTurn® SL

Modular system of adaptors and cutting heads for internal turning, grooving, threading, boring, and multi-task machining, for hole diameters down to 20 mm. For machining in turning centers, lathes, and multi-task machines.

Overview

How to use

Assortment

Choose a suitable adaptor

There are several adaptive items and tool holding options to choose from. If working with long overhangs or want to increase productivity, consider a Silent Tools™ damped boring bar.

Choose shortest possible overhang

For best performance of your CoroTurn SL tool, always choose the shortest possible overhang.

Select suitable cutting head

Choose cutting head that fits your application (recommendations below). Consider SL70 interface for profiling or pocketing of large components or difficult-to-reach features.

Always use the right torque

Use correct tightening torque when mounting the cutting head.

SL size: Torque, Nm (lbs)
16: 2 Nm (17.7 lbs)
20: 2.8 Nm (24.8 lbs)
25: 3.7 Nm (32.7 lbs)
32: 8.8 Nm (77.9 lbs)
40: 17 Nm (150 lbs)

View more instructions

Use a device for correct centre height

To set correct centre height of cylindrical CoroTurn SL boring bars, use a setting tool following these steps:

Attach to bar using serrated edge
Twist bar to get the correct centre height
When the bubble is in correct position the bar is parallel and ready to use

Cutting head maintenance

For best tool performance, check the insert seat so it hasn´t been damaged during machining or handling. Remember to check and clean the coupling between cutting head and bar when changing cutting head.

Application tips

Tips for internal grooving

Long overhangs and poor chip evacuation are two of the challenges with internal grooving. Long overhangs can cause problems with both deflection and vibration while vibrations and poor chip evacuation can cause insert breakages

Application tips for internal grooving

Turning tool set-up

Learn what to think about when working with long overhangs and how to get an optimal tool set-up.

Turning tool set-up

Machine tools and tooling considerations

Find out how to choose the right spindle interface depending on machine and tooling system considerations and get the most out of your machine.

Minimize vibration with Silent Tools™

You can’t avoid vibration entirely in metal cutting operations, but there are several ways to reduce it. This Silent Tools™ application guide will help you achieve productive machining with minimized vibration.

Recommendations

Cutting head recommendations

Get our recommendations for which cutting head to use depending on application. Click on links to learn more about respective product family.

Turning

CoroTurn® 107 for turning small to medium sized holes, slender components
CoroTurn® Prime for excellent chip evacuation, for diameters above 40 mm (1.575 inch)
T-Max® P for turning of large diameter bores
CoroTurn® TR for profiling

Grooving

CoroCut® 1-2 for versatile grooving, system includes SL70 cutting heads for machining complex components
CoroCut® QD first choice for deep grooving on larger components

Face grooving

CoroCut® QF, first choice for secure face grooving
CoroCut® 1-2, versatile system for face grooving

Thread turning

CoroThread® 266 for rigid thread turning

View CoroTurn SL cutting head assortment here

Adaptor system recommendations

CoroPlex® SL mini-turret – four turning tools in one for turning, grooving or threading
CoroBore 825 SL for face grooving on non-rotating components

Is your set-up coolant compatible?

The new generation of CoroTurn® SL cutting heads (SL16 and SL20) seamlessly integrate with the through coolant functionality of the new generation Silent Tools™ turning adaptors, delivering side-oriented internal through coolant to the insert edge.

To utilize the benefits of both products, your set-up needs to be coolant compatible. See the matrix below to find out which cutting heads that can be paired with which adaptors.

	New generation CoroTurn® SL cutting head, SL16 & SL20	Old generation CoroTurn® SL cutting head, SL16 & SL20	CoroTurn® SL cutting head with HPC, SL25	CoroTurn® SL cutting head, SL25
New generation Silent Tools™ turning adaptor, 16 & 20 mm (⅝ & ¾ inch)	Yes	No	N/A	N/A
Old generation Silent Tools™ turning adaptor, 16 & 20 mm (⅝ & ¾ inch)	Yes	Yes	N/A	N/A
New generation Silent Tools™ turning adaptor (through coolant), 25 mm (1 inch)	N/A	N/A	Yes	No
Old generation Silent Tools™ turning adaptor (side coolant), 25 mm (1 inch)	N/A	N/A	No	Yes
Old generation Silent Tools™ turning adaptor (through coolant), 25 mm (1 inch)	N/A	N/A	Yes	No

From diameter 32 mm (1 ¼ inch), all old cutting heads can be used.

Spare part recommendations

Hexagon key boxes

For tightening the hexagon screws on CoroTurn SL cutting heads there are hexagon key boxes, both metric and inch version.

Torque wrenches

It is important to have the correct insert tightening torque, these are the torque wrenches available in our assortment.

Torque wrench	Torque range		Handle
Torque wrench	Nm	In-lbs	Handle
5680 105-01	0.3-1.2		Straight
5680 105-02	1.2-3.0		Straight
5680 105-05	3.0-6.0		Angled
5680 105-06	4.0-8.8		Angled
5680 105-03		2.5-11.5	Straight
5680 105-04		11.0-26.0	Straight
5680 105-07		26.0-55.0	Angled
5680 105-08		35.4-78.0	Angled
5680 099-01	3-15		Angled
C-TK-01M	20-100		Angled

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Part of global industrial engineering group Sandvik, Sandvik Coromant is at the forefront of manufacturing tools, machining solutions and knowledge that drive industry standards and innovations demanded by the metalworking industry now and into the next industrial era. Educational support, extensive R&D investment and strong customer partnerships ensure the development of machining technologies that change, lead and drive the future of manufacturing.

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