Каталог Widia инструментальная оснастка - страница 1098

General Design (continued)

Application Hydraulic expansion chucks work best when clamping these style shanks:

• Shanks to DIN-6535 — forms HA, HB, and HE.
• Shanks to DIN-1835 — forms A and B (with shank tolerance h6 and Ra minimum of 0,3 μm).
• Forms HA and A — plain cylindrical shank, 6–32mm diameter.
• Forms HB and B — Whistle Notch ™ shank, 6–20mm maximum diameter.
• Form HE — Whistle Notch shank, 6–20mm maximum diameter. (WIDIA™ suggests the use of a reducer collet).
• Inch straight shanks: - 1/4–5/8" (.0004 under nominal diameter maximum). - 3/4–1-1/4" (.0005 under nominal diameter maximum).

0,003mm (.0001")

D h6

2.5 x D max 50mm (2")

Slim Line Design

Weldon® shanks with a maximum diameter of 20mm (3/4") can be gripped without reducer collets. However, WIDIA recommends using reducer collets for all flatted shanks. Highest accuracy is obtained with plain, cylindrical shanks.

0,006mm (.0002")

D h6

2.5 x D max 50mm (2")

Using a sleeve gives higher grip torque: Formula: sleeve bore x chuck torque = assembled torque chuck bore Example: 12mm (sleeve bore) x 220 Nm = 132 Nm 20mm (chuck bore) While chart shows for a 12mm Hydraulic Chuck = 70 Nm approx. 2x grip advantage