SMW-AUTOBLOK EN

NTL-D NTL-C

High precision power chuck Ø 500 - 1000 mm ■ Centrifugal force compensation ■ Closed center - 3 jaws ■ Long stroke ■ proofline ® chucks = fully sealed - low maintenance Application/customer benefits • For mid to large batch production • Safe clamping through centrifugal force compensation, even of deformation-sensitive parts at highest speeds • Fully sealed, ideal for dry machining of castings and forgings or if high pressure coolant is used NTL-D: Master jaws with INCH SERRATION (3/32“ x 90°) NTL-C: Master jaws with TONGUE & GROOVE Technical features • EXTRA long jaw stroke • Centrifugal force compensation via counterweights • Constant gripping force with permanent grease lubrication • Center bore for coolant and / or air • Chuck body and internal parts case hardened • proofline® chucks = fully sealed - low maintenance Standard equipment Ordering example 3-jaw chuck 3-jaw chuck NTL-D 500 / Z380 1 set soft top jaws or Mounting bolts 3-jaw chuck NTL-C 800 / Z520

INCH SERRATION

TONGUE & GROOVE



s

a l e

m a i

Actual gripping force diagram

The data in the diagram refer to 3-jaw chucks, newly maintained according to their service manuals using SMW-AUTOBLOK K67 grease. The static and dynamic gripping forces have been measured using standard soft top jaws, placed in a position not exceeding the outer diameter of the chuck.

150 120 90 180 210 240

630 NTL 500 NTL

800 NTL

1000 NTL

S

Safety advice / danger of damage: When using taller / heavier jaws and / or clamping on a bigger diameter reduce draw pull / rotating speed accordingly.

F

30 60

0

500

1500

2500

1000

2000

0

Speed (r.p.m.)

Technical data

SMW-AUTOBLOK Type

NTL-D 500 NTL-C 500

NTL-D 630 NTL-C 630

NTL-D 800 NTL-C 800

NTL-D 1000 NTL-C 1000

Radial jaw stroke Axial piston stroke Max. draw pull* Max. gripping force*

mm mm

12.1

12.1

12.1

12.1

30

30

30

30

kN kN

120 240

120 240

120 240

120 240

Max. speed

r.p.m.

2400

2000 420 21.2

1500 680 55.7

1000

Weight (without top jaws)

kg

255

970 110

Moment of inertia

kg·m 2

8.2

Recommended actuating cylinders

Type

SIN-S 175 / 200

SIN-S 175 / 200

SIN-S 175 / 200

SIN-S 175 / 200

Id. No. NTL-D Id. No. NTL-C

77184651 77189151

77184664 77189164

77184680 77189180

77184690 77189190

* For internal clamping reduce the draw pull by 30%.

on request: Tooling Standard Parts Catalog

SMW-AUTOBLOK 470

SMW-AUTOBLOK 472

SMW-AUTOBLOK 335

78 SMW-AUTOBLOK

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