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Junker Lean Selection
Lean Selection speed

Lean Selection speed - Cylindrical grinding machines

Cylindrical grinding with speed

The Lean Selection speed is an extremely efficient high-speed grinding machine, perfect for grinding small and medium-sized production series in single or multiple-shift operation. When it comes to grinding shaft-type parts, including blanks for cutting tools, the Lean Selection speed is a very cost-efficient solution and is both highly flexible and efficient.


  • CBN and/or diamond grinding wheels
  • Peripheral speed of up to 140 m/s
  • High stock removal capacity
  • Fast retooling
  • High rate of availability
  • Minimal non-productive times
  • Rigid machine base design
  • Easy to operate
  • Sophisticated automation concepts
  • Comprehensive service package

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Technical data: Lean Selection speed

Lean Section Speed Shaft
Grinding Length
500 mm
Clamping Length
800 mm
Center Height
150 mm
Component Weight
10 kg
Grinding Wheel Diameter
400 / 350 mm
WxDxH mm (without peripherals)
3340 x 2660 x 2325
12000 kg

Wheelhead Lean Selection speed

  • /B1
  • /B12 speed
  • /B13 speed
  • /B4 speed

Equipment and Options


The Erwin Junker Operator Panel was specifically developed to control grinding machines. All machine components are controlled using the operator panel – irrespective of the series and the used control system. The identical structure, intuitive menu guidance and visualization of the workpiece geometry make for extreme user convenience and flexibility in operation. Programming takes place directly using the operator panel or an external programming tool.


JUNKER offers both internal and external loading systems for all its machine series, depending on customer and workpiece requirements. The loading systems can be combined with different infeed and discharge systems such as conveyor belts or custom tailored systems.


The measurement systems are also individually adjusted to the various workpieces and customer specifications. The measurement processes entail evaluating the recorded measured values and utilizing them for measurement correction in line with the prepared measurement strategy. A grinding wheel measuring system to determine the diameter, axial position and width of the grinding wheel completes the wide range of systems on offer.


Grinding wheel dressing is CNC controlled. A driven diamond dressing wheel or a workpiece-dependent diamond profile roller can be used. Dressing takes place manually or using an automatic dressing program with grinding wheel compensation.


Depending on the application, the abrasive CBN or diamond is used. The basic bodies of the grinding wheels comprise steel or carbon. In conjunction with CBN, it can make sense to use a carbon base body: It is light, has vibration-damping properties and remains dimensionally stable even at high speeds.


The machine bed made of mineral cast provides impressive damping behavior and torsional rigidity. The temperature stability allows fluctuations in the ambient temperature to be compensated with a minimum of effort, ensuring a high level of dimensional stability throughout the whole day.


In case of an fire, the machine interior is automatically hermetically sealed, suffocating a fire before it has a chance to spread. If required, extinguishers (CO² or water mist systems) and exhaust air purification systems can be additionally installed. A competent partner for fire protection and filtration solution solutions is LTA Lufttechnik GmbH, which also belongs to the JUNKER Group and which researches, develops and produces filtration systems for industrial air purification.

The Filtration systems


  • Axle
  • Starter shaft
  • Drive shaft
  • Countershaft
  • Bolt
  • Bushing
  • Excentric shaft
  • Gear shaft
  • Piston pin
  • Piston ring
  • Motor shaft
  • Pump piston
  • Pump pinion
  • Pinion shaft
  • Pipe
  • Roller Bearings
  • Rotor
  • Worm wheel
  • Worm shaft
  • Spindle
  • Rod
  • Stator shaft
  • Stud
  • Turbine shaft
  • Cylinder
  • Rolling element
  • Shaft
  • Tool holder
  • Tool Blank
  • Gearwheel
  • Gear rod
  • Spigot
  • Cylinder rollers

Product Brochures Lean Selection speed

Lean Selection speedLean Selection speed
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