A91-SSD_EU-EN

2

DRILLING | Structural Steel SoluƟons | T-A® and GEN2 T-A® Replaceable Insert Drills

T-A® Structural Steel Drill Insert Holders 2 Series | Taper Shank

A

L 1

L 4

P 2

DRILLING

D 1

L 2

P 1

MT

L 3 *

Helical Flute #3 Morse Taper

B

Body

Shank

D 1

L 2

L 4

L 3 *

L 1

MT

P 1

P 2

Series

Length

Part No.

BORING

25020H-003IS100

2

Extended 25.4

181.41 239.06

242.9

337.49

#3

TTC

TSC

2 25020H-003IS100 * L 3 is 1.60 mm (0.063") shorter if using a structural steel holder with Notch Point®, GEN2 T-A®, or 150° structural steel T-A® drill insert geometry. Extended 1.0000 7.142 9.412 9.563 13.287 #3 TTC TSC

Helical Flute #4 Morse Taper

Body

Shank

C

L 2

L 4

L 3 *

L 1

MT

P 1

P 2

D 1

Series

Length

Part No.

24020H-004IS100 25020H-004IS100 26020H-004IS100 24025H-004IS112 24020H-004IS100 25020H-004IS100 26020H-004IS100

Standard 25.40 Extended 25.40

148.72 166.98 170.82 290.80 172.01 237.62 241.45 361.44 172.01 408.20 412.04 532.03 148.72 166.98 170.82 290.80

#4 #4 #4 #4 #4 #4 #4 #4

TTC TTC TTC TTC TTC TTC TTC TTC

TSC TSC TSC TSC TSC TSC TSC TSC

REAMING

2

Long

25.40

2.5

Standard 30.16

Standard 1.0000 Extended 1.0000

5.855 6.772 6.772 5.855

6.574 9.355

6.725 9.506

11.449 14.230

2

Long

1.0000

16.071 16.222 20.946

2.5 24025H-004IS112 * L 3 is 1.60 mm (0.063") shorter if using a structural steel holder with Notch Point®, GEN2 T-A®, or 150° structural steel T-A® drill insert geometry. Standard 1.1875 6.574 6.725 11.449

D

BURNISHING

E

THREADING

A91: 5

A91: 14 - 15

X

Key on A91: 1

= Metric (mm) = Imperial (in)

Screws sold in mulƟples of 10.

SPECIALS

Refer to Speed and Feed charts for recommended adjustments to speeds and feeds. Refer to page A91: 21 for deep hole drilling guidelines in this secƟon of the catalogue. Visit www.alliedmachine.com/DeepHoleGuidelines for the most up-to-date informaƟon and procedures. Factory technical assistance is available for your specific applicaƟons through our ApplicaƟon Engineering Team. email: engineering.eu@alliedmachine.com WARNING

www.alliedmachine.com | +44 (0) 1384 400 900 | enquiries.eu@alliedmachine.com

A91: 17