Grinding Factory Automation
Integrated Production Systems
1. Proximity to customers 2. Application of technologies 3. International operation
Plantool BGM and RGM Grinding Machines for ball valve components
Grinding Technology BGM and RGM machines for ball valve ball and seat ring grinding of ball valves. Plantool’s long experience in machine tool building extends also to grinding machines. We have been manufacturing grinding machines for four decades. With our technically sophisticated machines you can achieve accurate tolerances and good surface finish cost-effectively.
Plantool delivers: • BGM valve ball grinding machines • RGM valve seat ring grinding machines
MACHINES: Ball grinding:
Seat ring grinding:
• BGM 600
• RGM 600
• BGM 800
• RGM 1000
• BGM 1300
• RGM 1400
• BGM 1800
• RGM 1700
• BGM 2100
Valve Ball Grinding Machines Plantool’s grinding machines are designed for manufacturing of metal balls of high precision valves. Balls up to 2100 mm in diameter can be machined. Machining is done with segmented grinding wheels. Power range of the vibrationless quality spindle is 22 – 92 kW. Extra equipment includes automatic ball measurement, diamond wheel dressing and automatic tool change.
advantages: • Solid Nordic machine tools also for coated balls • Advanced grinding force control against ball surface • Diameter measuring before, during and after grinding (BGM 1300–2100) • Spindles and linear axis protected against dust • 2-axis centering function for spindle position (ball center measuring with probe)
Plantool BGM Range
Ømax Ball (mm)
Spindle Power (kW)
Tool sharpening device
Automatic tool change
BGM 600 and 800 machines have slant bed grinding spindle axis and BGM 1300, 1800 and 2100 machines feature horizontal grinding spindles. In all machines there is a possibility to adjust y-axis for positioning of the spindle compared to ball’s horizontal centre line. The machine bed is designed so that the grinding waste will be flushed away from inside of the machine to liquid handling system BGM machines are controlled either with CNC or PLC systems.
Servo controllers – braking energy can be fed to the use of other motors or back to the factory electric grid. The control of the machine is done from 12” NC-operation panel, graphical user interface. The control system is also equipped with hand held panel.
Valve Seat Ring Grinding Machines Machines for grinding valve seat rings are suitable for 100 – 1700 mm seat dimensions. The grinding is done with cup wheel tools. Power range of the vibrationless quality spindles varies between 5,5 – 10 kW and the rotation speed 0 – 10 000 rpm. The machines have three axes, all of which are servo driven. Extra equipment includes cooling unit for spindle and coolant, automatic tool change and a complete liquid filtering system.
advantages: • Solid Nordic machine tools • Advanced grinding force control against seat surface • Spindles and linear axis protected against dust and waste
Plantool RGM Range
Ømax Seat Ring (mm)
Spindle Power (kW)
Spindle Cooling System
Chiller for Coolant
Automatic Tool Change
RGM machines have been designed to high quality grinding needs – also for coated rings. Spindle positioning axes are equipped with accurate electronic linear scales. High quality finished parts can be achieved by almost zero run-out of the clamping chuck.
For the clamping of the ring the machine can be equipped with manual or there can be chuck with hydraulic clamping function.
The coolant passes to the tool through the spindle. The waste produced in the grinding operation is separated from the coolant by filtering. The machine bed is designed so that the dust and grinding waste will be flushed away from inside of the machine to liquid handling and filtration systems.
For the clamping of the ring the machine can be equipped with manual or hydraulic chuck or there can be chuck with hydraulic clamping function. Operator friendly control system makes the use of the machines easy. RGM machines are controlled either with CNC or PLC systems. For it’s user interface the machine has a 10” touch screen panel.
BGM Grinding Machines
other options: • Turning possibility, the machine will be equipped
Ball Grinding Machines can be equipped with several options which help manufacturing operations. In addition to the grinding process itself, the machinery allows for ball measuring, grinding tool sharpening as well as automatic tool change.
with chip conveyor • Robotic deburring of the ball OD/ID edge • Different coolant filtration systems • Grinding tools
Grinding tool sharpening with diamond
ATC, Automatic tool change (models BGM 1300 – 2100)
The grinding tool can be sharpened several times inside the machine without unclamping the heavy tools.
Large tools can be changed automatically. Next tool can always be in waiting position.
Ball measuring during grinding operation (models BGM 1300 – 2100)
RGM Grinding Machines The Plantool Seat Ring Grinding Machines offer a range of options for the customer to choose from. Machines can be equipped with different types of coolant handling and filtration systems depending on customerâ€™s needs. Spindle motor can be cooled with air or with liquid circulation system. Grinding tools can be changed automatically from the magazine It is also possible to have hydraulic clamping system to RGM 600 model.
ATC and tool magazine
Hydraulic clamping system
Our product support services ensure efficient operation and long operating life for the machines. Original parts can be delivered quickly and our customers can rest assured that they are receiving the best machine expertise of our personnel. Quality maintenance and servicing ensures stable and predictable profitability. Plantool Industrial Services covers all the main sectors of profitability optimization.
service portfolio: • Yearly preventive maintenance • Maintenance contract • Spare parts service • Modernizations • Servicing • Increased predictability • Rapid maintenance service • Maximization of investment benefit
Other products for industrial valve production pressure test systems: • Vertical press • In feeding table for accurate and smooth valve handling
CIRCULAR SAWS FOR WELDED BALL VALVE COMPONENT CUTTING AND END WORKING: • One and two blade circular sawing machines. • Round table end working unit • Automatic tube and work piece handling
Plantool® – complete service from product to application Plantool® is an internationally operating Finnish enterprise in the metal working industry. Our core competence lies in the field of engineering, machining solutions and system integration. Based on our know-how and longstanding experience, we design fully automated machinery and manufacturing systems that offer our customers solutions that employ only the latest state-of-the-art technology. We combine various techniques creatively and provide our customers with new solutions in the extensive field of production automation. Our comprehensive service includes design, maintenance and development of our customer’s operational environment. Plantool’s strategy is built on three cornerstones: proximity to customers, application of technologies and international operation.
Plantool Oy Verkatehtaankatu 10 FI-60100 Seinäjoki Tel. +358 (0)207 288 200 Fax +358 (0)207 288 210
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