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ER COLLET CHUCKS / ERC

ER COLLET CHUCKS / ERC

Product catalog summary

Overview: This document provides technical specifications and instructions for the use of ER collet chucks, which are used in various machining applications such as drilling, tapping, milling, and reaming. The document includes details on tool length adjustment, torque recommendations, and ordering information for different collet sizes and accessories.

Specifications:

The ER collet chucks are designed to accept DIN standard collets and are symmetrically ground for accuracy and smooth operation.
Tool length can be adjusted using a preset screw included in the holder. Turning the tool clockwise shortens the length, while counterclockwise extends it.
Torque specifications are provided for different holder sizes, ranging from 4 to 103 lbf-ft, depending on the size of the holder and spanner used.

Procedures:

To adjust tool length, press down on the tool shank towards the preset screw and rotate the tool. Once the desired length is achieved, tighten the nut with a special spanner wrench.
Collet removal involves pushing the collet towards the NT marking and then releasing it by pushing against the collet face.

Accessories and Ordering:

Collets and spanner wrenches are sold separately. The document provides part numbers and dimensions for ordering.
Special spanner wrenches are recommended to prevent over-tightening and ensure proper fit on NT products.

Recommendations:

Use NT spanner wrenches to avoid over-tightening and potential breakage.
Specify the class of TIR accuracy when ordering collets to ensure precision.

Catalog excerpts

NT's ER collet chucks accept the well known DIN standard collet. All ER Collet Chucks are made with NT's symmetrically ground design providing excellent accuracy and smooth operation. An excellent collet chuck for drilling, rigid tapping, milling and reaming applications. precision type ERC Tool length adjustment Preset screw is included in the holder. Press down on the tool shank toward the preset screw and rotate the tool for length adjustment. (Clockwise)Tool length shortened (Counterclockwise) Tool length extended Preset screw Holder When the desired tool projection length is reached, tighten the nut with a special spanner wrench (sold separately) securely. Holder size ERC L Completely sealed by short slotting No damage to ball bearings from coolant leakage 8 11S 11 16 20 25 32 40 50 Spanner size Recommended torque S-8E S-11E S-0 FK0030 FK0034 HS-1-16 HS -2-20 HS -2.5-25 HS-4-42 4 - 5 lbf-ft(44 - 62 lbf-in) 11 - 15 lbf-ft (133 - 177 lbf-in) 8 - 11 lbf-ft(89-133 lbf-in) 26 - 30 lbf-ft (310 - 354 lbf-in) 30 - 33 lbf-ft (354 - 398 lbf-in) 41 - 44 lbf-ft (487 - 531 lbf-in) 48 - 52 lbf-ft (575 - 620 lbf-in) 55 - 59 lbf-ft (664 - 708 lbf-in) 96 - 103 lbf-ft (1151 - 1239 lbf-in)

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S T / E R C Straight Shank Type

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Standard 16—degree taper collet

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Standard 16—degree taper collet

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ER Collet Chuck Accessories Holder Series Collet ER8 ERC8 ERC11S ERC11 ERC16 ERC20 ERC25 ERC32 ERC40 ERC50 Nut ERP-8 ERP-11S HDP-07A ERP-16 ERP-20 ERP-25 ERP-32 ERP-40 ERP-50 ER11 ER16 ER20 ER25 ER32 ER40 ER50 Preset screw HDS07A-ES11 ES16 HDS12A-ES20 HDS16A-ES25 HDS22A-ES32 ES40 ES50 Spanner Wrench S-8E S-11E S-0 FK0030 FK0034 HS-1-16 HS-2-20 HS-2.5-25 HS-4-42 ER collet chucks are supplied with preset screw and nut. (except for ER8) Special spanner wrench and collet are sold separately. Special Spanner Wrench NT spanner wrenches are manufactured to factory specifications and dimensions to achieve...

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ER COLLET CHUCKS / ERC

ER COLLET CHUCKS / ERC

Catalog excerpts

All NT Tool catalogs and technical brochures