EDP: 4501929 - Part Number: ST3/4X4.000ER20M - Series: ST*ER*M

Careers About Us

Big Cutter One - Next Stop

,

Big Cutter Two - Next Stop

,

Visit the Big Cutter Page

In-Person
Seminars

View our Schedule

Mobile
Seminars

View our Schedule

View the Trade Shows page...

Our Upcoming Trade Shows

	Show Name	Dates	Location	Website
1	PMTS (Precision Machining Technology Show)	April 1–3, 2025	Huntington Convention Center, Cleveland, OH	Show Website

Contact Us
Address:

Ingersoll Cutting Tools
845 S. Lyford Rd.
Rockford, Illinois 61108

Phone or E-Mail:

- 815-387-6600
- info@ingersoll-imc.com

Tech
Support

For Technical Questions

Customer
Service

Get General Assistance

Home > Tool Holders > ST*ER*M > 4501929 ST3/4X4.000ER20M

EDP: 4501929
Part: ST3/4X4.000ER20M
Series: STERM

View STEP

SS Connection Code Machine Side

3/4"

CSI Connection Code Workpiece Side

ER20

d min Shank Dia. Min.

0.041

d max Shank Dia. Max.

0.514

D3 Retention Nut Dia.

1.102

L Gauge Length

1.650

L2 Body Length 2

4.000

J Pre-set Screw

M12

Available : 0
International: 7

Product Series Features:

Cylindrical Shank
ER Collet Chuck DIN 6499
Central Coolant Hole

SS - Connection Code Machine Side	3/4"
CSI - Connection Code Workpiece Side	ER20
d min - Shank Dia. Min.	0.041
d max - Shank Dia. Max.	0.514
D3 - Retention Nut Dia.	1.102
L - Gauge Length	1.650
L2 - Body Length 2	4.000
J - Pre-set Screw	M12
DXF File
STEP Light File
STEP Detailed File

Photo of MultiSurfer

MultiSurfer
ER*L - Solid ER, Neck Relief

Solid ER
MultiSurfer Connection
Neck Relief
Coolant Options
Strong and precise Pilot, Screw & Tri-Lobe Drive Connection

Photo of ChipSurfer

ChipSurfer
ER*T - Solid ER, Neck Relief

Solid ER in sizes 11, 16, 20, 25 & 32
Chip Surfer Connection
Neck Relief
Coolant Options

Photo of Tool Holders

Tool Holders
BT*MAXIN

BT MAS-403
Power Milling Chuck
Chucking forces will be reduced by 25% when reduction sleeves are used
Optional reduction sleeves sold separately

Photo of Tool Holders

Tool Holders
BT*SRKIN

BT MAS-403
INCH Thermal Shrink Chuck
AD Style Coolant (coolant through the center)
For use with Inductive Heating devices ONLY
-C Indicates coolant ports in nose
BT40 balanced G2.5@25,000RPM

Photo of HydroMax

HydroMax
C*HYDRO*HD

C-Adapter (ISO 26623-1)
Heavy Duty Hydraulic Milling Chuck
Quick Change Holder
Runout Accuracy <.00012"
High Torque Transmission
Recommended for chatter dampening when machining high temperature alloys such as titanium
Chucking forces will be reduced by 25% when using sleeves
Balanced G2.5@25,000 RPM
*See Notes below

Photo of Tool Holders

Tool Holders
C*MAXIN

C-Adapter (ISO 26623-1)
Power Milling Chuck
Quick Change Holder
Chucking forces will be reduced by 25% when reduction sleeves are used
Optional reduction sleeves sold separately

Photo of Tool Holders

Tool Holders
C*SRKIN

C-Adapter (ISO 26623-1)
INCH Thermal Shrink Chuck
Quick Change Holder
For use with h6 carbide, steel, or HSS shank tooling
For use with Induction style heating units only

Photo of Tool Holders

Tool Holders
CAT*FC*MAXIN

CAT Face Contact
Power Milling Chuck
Chucking forces will be reduced by 25% when reduction sleeves are used
Optional reduction sleeves sold separately

Photo of Tool Holders

Tool Holders
CAT*FC*SRKIN

CAT Face Contact
Thermal Shrink Chuck
AD Style Coolant (coolant through the center)
For use with Carbide, HSS, and Steel tools with h6 tolerance
Balanced G2.5@25,000RPM
For use with Inductive Heating devices only

Photo of HydroMax

HydroMax
CAT*HYDRO

CAT V-Flange
Hydraulic Milling Chuck
CAT40 Balanced G2.5@18,000 RPM
CAT50 Balanced G2.5@12,000 RPM
Runout Accuracy <.00012"
Recommended for chatter dampening when machining high temperature alloys such as titanium
Chucking forces will be reduced by 25% when using sleeves
*See Notes below

Photo of Tool Holders

Tool Holders
CAT*MAXIN

CAT V-Flange
Power Milling Chuck
Chucking forces will be reduced by 25% when reduction sleeves are used
Optional reduction sleeves sold separately

Photo of Tool Holders

Tool Holders
CAT*SRKIN

CAT V-Flange
Thermal Shrink Chuck
ADB Style Coolant (convertible coolant through the center & flange)
For use with Inductive Heating device ONLY
Balanced G2.5@25,000RPM

Photo of Tool Holders

Tool Holders
ER*EX

ER Series DIN6499 Spring Collet
Single Diameter
.0004" Runout Tolerance
Super Finish Surface with Anti-Corrosion Protection
Recommended for improved runout & clamping torque
For use with solid shank cutting tools

Photo of Tool Holders

Tool Holders
ER*SEAL*AA JET

DIN 6499/ISO 15488-B Collet
Single Diameter
8 Slot Rubber Sealed Design with 4 Cooling Jets directing coolant flow to the cutting edge
AA High Precision
.0002" TIR
Collapse Range 0.008" Max
Super Finish Surface with Anti-Corrosion protection
1450 PSI Max
For use with solid shank cutting tools
Recommended for improved runout & clamping torque

Photo of Tool Holders

Tool Holders
ER*SPR

ER Series DIN 6499 /ISO15488-B Spring Collet
Inch/Metric Combination
.0004" TIR
Hard Touch Coated
NOTE: ER11 COLLETS SHOWN WITH .039" (1 mm) CLAMPING RANGE HAVE BEEN PHASED OUT AND REPLACED WITH .020" (0.5 mm) CLAMPING RANGE

Photo of Tool Holders

Tool Holders
ER*SPR*AA

ER Series DIN 6499 Spring Collet
Inch/Metric Combination
AA High Precision
.0002" TIR
Hard Touch coated

Photo of HydroMax

HydroMax
HSKA*HYDRO

HSK-A (DIN 69893/A)
Hydraulic Milling Chuck
HSKA50-A63 balanced G2.5@25,000RPM
HSKA100 balanced G2.5@18,000RPM
Note: Chucking forces will be reduced by 25% when optional reduction sleeves are used
*See additional notes below

Photo of Tool Holders

Tool Holders
HSKA*MAXIN

HSK-A (DIN 69893/A)
Power Milling Chuck
Chucking forces will be reduced by 25% when reduction sleeves are used
Optional reduction sleeves sold separately

Photo of Tool Holders

Tool Holders
HSKA*SRKIN

HSK-A (DIN 69893/A)
INCH Thermal Shrink Chuck
For use with carbide, HSS, and steel shank tooling
HSKA63 balanced G2.5@25,000RPM
HSKA100 balanced G2.5@20,000 RPM

Photo of Tool Holders

Tool Holders
HSKFM*SRKIN

HSK-FM (DIN 69893/F)
INCH Thermal Shrink Chuck with removeable Drive Pins for use on Makino models MAG Series A
HSK FM balanced G2.5@33,000RPM
For use with caribide, HSS, & steel tools with h6 shank tolerance
Note: Compatible with inductive heating devices only

Photo of HydroMax

HydroMax
SC*HYDRO

Sealed Reduction Sleeve
For use in hydraulic milling chucks
Note: Sleeves are compatible with all cylindrical shanks and Weldon shanks .250"-.750" diameter (Sleeves are not recommended for use with Weldon shanks over .750" diameter)

Photo of Tool Holders

Tool Holders
SC*SPR

Straight Sleeve/Collet
For use with MAXIN Power Milling chucks
Preset Screw available for tool positioning (Sold Separately)
*Chucking forces will be reduced by 25% when optional reduction sleeves are used

	EDP	Part Number	ISO Number	Description	Additional Info	DXF File	STEP Light File	STEP Detailed File
	4542350	NUTER20MINI	NUTER20MINI	Mini Clamping Nut for use with DIN 6499 Mini Collet Chuck		n/a	n/a	n/a
	4513011	WRENCHER20MINI	WRENCHER20MINI	Spanner Style Wrench for ER20 Mini Nut	Optional Accessory Item; Sold separately		n/a	n/a