Solid Carbide End Mills Technical Information Recommended Adaptors per End Mill Platform Recommended Adaptors SCEM Platform First Choice Alternate Choice VariMill I™ HydroForce™ Shrink Fit VariMill II™/VariMill II™ ER HydroForce Shrink Fit VariMill III™ ER HydroForce Shrink Fit VariMill II™ Long HydroForce Shrink Fit High-Performance Finishers HydroForce Shrink Fit High-Performance Roughers HydroForce Weldon Adaptor AluSurf™/Arcut™/Aluminium Tools HydroForce Shrink Fit VisionPlus™/VisionPlus X-Feed™ HydroForce Shrink Fit VariMill GP Shrink Fit Weldon Adaptor HSS/WavCut™ Weldon Adaptor — Select Adaptor per Technical Data/Characteristics Toolholders HydroForce Milling ER Weldon® Technical data/characteristics high torque Shrink Fit chuck collet chuck adaptor torque transmission radial runout (T.I.R.)1 radial rigidity2 tool length adjustment tool shank tolerance requirement through coolant minimum quantity lubrication (MQL) dampening capability shank diameter range3 cost of toolholder low requirement of external devices4 ease of handling dust resistance high-speed capability balancing accuracy 1 Radial runout may affect tool life. 2 Radial rigidity for Weldon holder is low at a direction perpendicular to the screw. 3 Accepts different shank diameters through the use of reduction sleeves or due to collapse range. 4 Collet chucks and milling chucks may require the use of a torque or special wrench; Shrink Fit adaptor requires a shrinking unit. widia.com N5