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Summary of Contents for Rottler VR12
- Page 1 8029 S 200th Street, Kent, WA 98032 USA | www.rottlermfg.com | Ph: (253) 872-7050 | Fax: (253) 393-0230 Rev 082621...
- Page 2 8029 S 200th Street, Kent, WA 98032 USA | www.rottlermfg.com | Ph: (253) 872-7050 | Fax: (253) 393-0230 Rev 082621...
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Page 3: Parts Ordering
PARTS ORDERING https://www.rottlermfg.com/documentation.php For optional equipment catalogs, please visit For fastest service ordering parts or equipment, contact us via e-mail with the information below. For customers within the U.S., send emails to parts@rottlermfg.com, for customers outside of the U.S., use intlparts@rottlermfg.com Have the following information on hand to expedite the ordering process: 1. -
Page 4: Manual Sections
MANUAL SECTIONS INTRODUCTION SAFETY CONTROL DEFINITIONS AND SWITCHES OPERATING INSTRUCTIONS 8029 S 200th Street, Kent, WA 98032 USA | www.rottlermfg.com | Ph: (253) 872-7050 | Fax: (253) 393-0230 Rev 082621... -
Page 5: Table Of Contents
Section 1: Introduction VR12 Operations Manual INTRODUCTION Contents Introduction .........................1-1 Description ........................1-2 Disclaimer ........................1-2 Limited Warranty ......................1-3 Online Documentation Access ..................1-4 8029 S 200th Street, Kent, WA 98032 USA | www.rottlermfg.com | Ph: (253) 872-7050 | Fax: (253) 393-0230 Rev 082621... -
Page 6: Introduction
“Installation Report” located in the Installation Chapter of this manual. We suggest that the new user of the VR12 read the CONTROL DEFINITIONS to get an idea how the machine operates. The Operating Instructions chapter should be read in order to familiarize the user with the actual button pushing sequences required to carry out a job. -
Page 7: Description
Section 1: Introduction VR12 Operations Manual Description Rottler’s Centerless Grinding System is able to grind a set of valves to exact same length without adjusting settings. The Centerless System rotates the valve stem on it’s own centerline. Precision drive rollers rotate the valve stem and a pneumatic low friction steady rest support the valve stem similar to a precision balancing machine, resulting in extremely accurate valve stem to valve seat run out less than .0002”... -
Page 8: Limited Warranty
Should a product not be as warranted, Rottler sole obligation shall be, at its option, to repair, correct or replace the product or to refund the amounts paid for the Product upon its return to a location designated by Rottler. -
Page 9: Online Documentation Access
VR12 Operations Manual Online Documentation Access Online documentation for machines and optional equipment can be accessed at the Rottler website. To access documentation open your browser and navigate to https://www.rottlermfg.com. Scroll to the bottom of the page and under the Owner Resources title click the type of documentation you want to access. - Page 10 Safety Instructions for Machine Use .................2-1 Electrical Power ......................2-3 Machine Operator ......................... 2-4 Emergency Procedure ......................2-4 When Using the VR12 Machine ................... 2-5 8029 S 200th Street, Kent, WA 98032 USA | www.rottlermfg.com | Ph: (253) 872-7050 | Fax: (253) 393-0230 Rev 082621...
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Page 11: Safety Information
Section 2: Safety VR12 Operations Manual Safety Information For Your Own Safety Read This Instruction Manual Before Operating This Machine. This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. - Page 12 DO NOT MODIFY OR ALTER THIS EQUIPMENT in any way. If modifications are deemed necessary, all such requests must be approved and/or handled by Rottler Manufacturing. Unauthorized modifications could cause injury and/or damage to machine and will void the warranty.
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Page 13: Electrical Power
If the VR12 is on the same power lines that are running to other electrical equipment (grinders, welders, and other AC motors) electrical noise can be induced into the VR12 electrical system. -
Page 14: Emergency Procedure
“REMEMBER” metal cutting tools have the speed and torque to severely injure any part of the human body exposed to them. When Using the VR12 Machine • Never use wheels, which that have been dropped or damaged •... - Page 15 Section 3: Control Definitions VR12 Operations Manual CONTROL DEFINITIONS AND SWITCHES Before attempting to operate this machine, first familiarize yourself with all controls and switches and the functions of each component of the machine. E-STOP Switch Pushing the E-STOP switch will shut off all power functions. Release the E-STOP switch the regain full machine function.
- Page 16 Section 4: Operating Instructions VR12 Operations Manual OPERATING INSTRUCTIONS Contents Operating Instructions ....................4-1 Machine Operator ........................ 4-2 Work Area ............................4-2 Overreach ............................4-2 Hand Safety ............................4-2 Machine Capacity ........................ 4-2 Avoid Accidental Starting........................4-2 Careless Acts ...........................4-2 Job Completion ..........................4-2 Replacement Parts ...........................4-2 Misuse ...............................4-2...
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Page 17: Operating Instructions
The power must always be OFF if the operator is not present. Machine Operator The operator of the VR12 should be a skilled machinist craftsman who is well versed in the caution, care, and knowledge required to safely operate metal cutting tools. -
Page 18: Overreach
Use only Rottler replacement parts and accessories; otherwise, warranty will be null and void. Misuse Do not use the machine for other than its intended use. If used for other purposes, Rottler Manufacturing disclaims any real or implied warranty and holds itself harmless for any injury or loss that may result from such use. - Page 19 Section 4: Operating Instructions VR12 Operations Manual Before mounting a wheel, always check for damage before installing. Unplug machine power before starting the procedure. Remove the 4 screws on the grinding wheel cover and remove cover. Push the spindle locking pin in and rotate the grinding wheel until the pin locks the grinding wheel shaft in place.
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Page 20: Valve Stem Grinding Wheel Removal
Section 4: Operating Instructions VR12 Operations Manual Remove retaining bolt and flange from grinding wheel shaft. Remove old wheel from mounting flange and clean mounting flange. Place new wheel on mounting flange. Place the lettering on wheel as shown in photo above. Be certain that mounting flange is all the way on the shaft and aligned with the drive key on the shaft. -
Page 21: Dressing The Main Grinding Wheel
VR12 Operations Manual Dressing the Main Grinding Wheel Use ONLY the ROTTLER grinding wheels using the reference numbers listed on consumable section of this manual. Those grinding wheels are already balanced before delivery. Attention! The use of original parts is required. -
Page 22: Dressing The Butt Wheel
Section 4: Operating Instructions VR12 Operations Manual 5. Set the proper speed for dressing (Truing) 6. Firmly grasp the main handle and sweep the dresser across the wheel slowly while slightly pushing in towards the wheel. Adjust diamond slightly in and continue to sweep the wheel until completely dressed or until the face on the grinding wheel is complete clean. -
Page 23: Operating Guide
VR12 Operations Manual Operating Guide The ROTTLER VR12 MODEL is a machine fitted with high speed rotating grinding wheels, it is therefore very important to apply the following safety instructions. Do not use the machine without all the guards on. - Page 24 Section 4: Operating Instructions VR12 Operations Manual 5. Press the Reset button (RST) so that the display shows 0.0 6. Remove the calibrating device, The Digital Angle Display has been calibrated to the perfect zero setting. 8029 S 200th Street, Kent, WA 98032 USA | www.rottlermfg.com | Ph: (253) 872-7050 | Fax: (253) 393-0230...
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Page 25: Resurfacing Procedure
Section 4: Operating Instructions 4-10 VR12 Operations Manual Resurfacing Procedure Note: To achieve a good run out on the valve head is imported to keep valve stem clean and the butt must be resurface. Grinding of Valve 1. Grinding angle setting 2. -
Page 26: Stem Ends
Section 4: Operating Instructions 4-11 VR12 Operations Manual c. By means of the lever H, pull the machine arm to the operator to release the upper valve driving roller. d. Rise up the valve pressing finger F located on the rest. -
Page 27: Valve Stem Chamfering
Section 4: Operating Instructions 4-12 VR12 Operations Manual Install the valve stem on the clamping block axis, on the right side of the machine, with the straight "V" near the wheel. To do that, you have to lock the index in position B, and rotate the clamping block by using the lever handle F. - Page 28 Section 4: Operating Instructions 4-13 VR12 Operations Manual Put the end stop knob A on the valve and block it in position (not too tight). Use the "V" 45° to the wheel to clamp the valve onto the clamping block.
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