Drilling machines and screw drivers
The drill family covers:
- Standard drills
- Hammer drills
- Impact drivers wrenches
The "Do It Yourself" market asks for drills which offer reliability, economy and easy handling. Professional users ask for the same features, but in addition require a high power output while maintaining a low operational power loss.
Hammer drillsHammer drills for the DIY market are designed in a similar way to conventional drills, but incorporate a percussion device that operates on the spindle shaft and gives the hammering effect.
In heavy duty professional hammer drills the electric motor is usually mounted vertically and gives the motion to the spindle shaft through a series of gears. The hammering system operates with or without the rotation of the spindle.
The environment for hammer drills is highly contaminated with dust etc. Hence the need to ensure good contamination protection.
Bearing solution for rotary drills
Single row deep groove ball bearings are used to support the armature and output shafts
Single row deep groove ball bearings for hammer drills
Bearings are subject to heavy loads, vibration and a dusty environment
Integrated garter seal units
Used in highly contaminated environments
SKF Sealed Energy Efficient deep groove ball bearing
SKF offers a new sealed deep groove ball bearing line which offers 30% lower friction while maintaining high seal ability