Portamill 308

• Replaceable and exactly centered connection between machine and tool
• For use in milling machines, machining centers, and drill units
• Taper shank, ground inside and outside
• Secure seat, high repeatability for tool changes

• Pull-down system: absolutely secure workpiece hold even during cutting of heavy parts
• Hardened and precision-ground steel jaws
• Dial turns 360° and has 1° scale division
• Parallelism ± 0,03 mm / 100 mm
• Precise, hardened jaw guides
• Made of high-quality cast-iron

• High-grade machine vise for hydraulic clamping of parts
• Hardened and ground surfaces ensure high-precision clamping, even when working with in-series connected vises
• 4 work surfaces
• Pull-down system for maximum secure clamping
• Spindle safety guard protects from chips
• Face parallelism 0.02 mm

• High quality cast iron
• Hardened and ground replaceable steel jaws
• Covered spindle
• Forged bronze spindle nut
• Including hand crank, swivel-base and scale

• 20 each (10 pairs) in wooden box
• Black-finished steel

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• For tools with cylindrical shank and setup area in accordance with DIN 1835 B
• Forged, case-hardened, precision-ground

• Shaft 19 mm, Weldon shaft with torque surface
• With carbide tips, quality P20

Set = 10 pieces

• DIN 844 B, DIN 1835 B, Weldon shaft
• HSS, ionized and therefore HRC 68
• Right-hand cut
• For materials up to 1000 N/mm2 strength
• Diameter: 6, 8, 10, 12, 14, 16, 18, 20, 22, 25 mm

• Gear ratio 1:90, disengages for direct division, manual 360° rotation of chuck
• Hand wheel with scale ring
• Nonius division 10''
• 6 masks for direct division of 2, 3, 4, 6, 8, 12, 24 parts
• Hardened and ground teeth with 3-jaw chuck, 160 or 200 mm

Applications: Workpieces can be clamped between the divider and the tailstock for a horizontal workpiece alignment.

Upgrade to a Universal Divider

Dividing plate set for indirect dividing:

• The spindle is positioned via dividing plates that have several concentric hole pattern
• Using so-called shears (two pointers rotating around the crank shaft) simplifies positioning through several crank rotations, since counting between holes on the divider plate is not necessary
• The user only has to count the number of full rotations
• Benefit: Many divisions can be performed with only a few divider plates, higher accuracy is achieved by using a reduction worm gear, which causes a high-resolution continued rotation of the crank

• Hardened and precision-ground jaws and body
• High precision and wear-resistant material ensure long service-life
• Clamping pressure is up to ten times as high as with conventional machine vises
• Swivel-base mounted vise body, 360° swivel
• Constant clamping pressure, unaffected by vibration and shock
• Hydraulic power booster

• For direct and indirect division
• From 2 to 66, all divisions from 68 to 132 dividable by 2, 3 a. 5 can be performed

• Completely enclosed design, prevents contamination from dirt and chips
• Setup table rotates on a large ring-shaped box way
• The very effective clamp pulls the setup table down straight, without any change of position or radial pressure and presses it against the guideway
• For quick manual turning, the worm can be disengaged from the worm gear by pushing down the hand-lever
• Setup table with 360° scale
• The zero-backlash of worm and worm gear is adjustable
• Hand wheel scale gradation 10''
• Hand wheel can be replaced with indexing plate

• With 6 radial setup T-slots
• Very low profile
• Guide slot in the vertical base plane
• Can be used vertically

Accuracy (max. deviation):

• Sface concentricity of work table setup surface 300 : 0.015
• Concentricity of setup < = 0.015
• Parallelism of setup to base surface 300 : 0.02
• Concentricity of setup table taper bore < = 0.010
• Parallelism of bore axis to vertical setup surface 0.03
• Parallelism of bore axis to slot in the vertical setup surface 0.02
• Parallelism between vertical setup area and conus taper connection axis - tailstock center 0.02
• Parallelism between slot in the vertical setup surface and the connecting axis between centers 0.02
• Division accuracy 45"

For precise machining or corner bores, angular cutting, angular grinding, etc.

• 1 scale gradation direct read-out at the table
• Cast-iron frame, ground table surface and guideways