Friday’s tools: Suhner's PolyDrill Multi-Spindle Drilling Heads
Source: Suhner

The PolyDrill series of multi-spindle heads, available from Suhner, includes fixed and adjustable hole pitches and compact models. 

Drilling capacity is available between 1.5 and 25 mm. Minimum hole spacing is 7 mm, while maximum hole spacing is virtually limitless, according to the company. Optional tool holders include ER, ST, JT33, Weldon and other customized styles. Options include axial and radial compensation as well as custom layout and spacing.

The range includes the MH 20/5, MH 20/7, MH 20/10 and MH 20/13 multi-spindle heads in addition to multiple spindle heads with two adjustable spindles. The MH 20/5, MH 20/7 and MH 20/10 have maximum speeds of 4,000 rpm. Maximum drilling capacities are 5, 7 and 10 mm, respectively. The MH 20/13 has a maximum drilling capacity of 13 mm and a maximum permissible speed of 3,000 rpm.

The MHF can be equipped with up to 10 spindles in a custom pattern and fixed spindle distance. Maximum drilling capacity is between 5 and 13 mm with speeds ranging between 2,500 and 4,000 rpm. The MHFP is equipped with eight spindles with preloaded angular contact bearings for use with carbide tools and fixed spindle distance. Maximum drilling capacity is between 7 and 20 mm with a speed range of 0 to 8,000 rpm. 

The VG 4-8 drive system can power up to eight machining units with a single motor with flex shaft power delivery. The speed range for this drive system is between 46 and 9,320 rpm. Flexible drive shafts NA 7, 10 and 12 provide speeds ranging from 12,000 to 20,000 rpm.