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Summary of Contents for SCHUNK ROTA NCK plus
- Page 1 Power Chuck ROTA NCK plus Assembly and operating manual Translation of the original manual...
- Page 2 Imprint Imprint Copyright: This manual is protected by copyright. The author is SCHUNK GmbH & Co. KG. All rights reserved. Technical changes: We reserve the right to make alterations for the purpose of technical improvement. Document number: 0889048-en Version: 02.00 | 12/04/2023 | en...
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Page 3: Table Of Contents
7.3.3 Mounting the ROTA NCKplus Chuck with straight recess mount ..... 32 8 Function .................... 35 8.1 Function and handling ................. 35 8.2 Replacement or renewal of jaws............. 35 8.3 Disassembly and assembly of the Chuck ........... 36 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 4 9.1 Lubrication ..................37 9.2 Changing the top jaws ................. 38 9.3 Maintenance intervals................38 10 Disposal ..................... 39 11 Assembly drawing ................40 12 Spare parts ..................41 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
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Page 5: General
Non-observance can lead to irreversible injury and even death. CAUTION Dangers for persons! Non-observance can cause minor injuries. NOTICE Material damage! Information about avoiding material damage. WARNING Warning about hand injuries 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 6: Applicable Documents
Catalog data sheet of the purchased product * Calculation of the jaw centrifugal forces, "Technology" chapter in the lathe chuck catalog * The documents labeled with an asterisk (*) can be downloaded from schunk.com. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 7: Basic Safety Instructions
02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 8: Notes On Particular Risks
The lathe chuck may only be used on machines and facilities that fulfill the minimum requirements of the EC Machinery Directive; specifically, they must have effective technical measures to protect against possible mechanical hazards. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 9 Wear suitable safety shoes. Follow the safety and accident-prevention regulations when operating the chuck, especially when working with machine tools and other technical equipment. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
- Page 10 Ensure the chuck's axial and concentric runout. Check options for remedying imbalances on special top jaws and workpieces. Reduce the speed. Wear hearing protection. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
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Page 11: Notes On Safe Operation
If the machine tool or technical equipment can reach a higher speed than the chuck's top speed, a reliable speed limiter must be installed and proof must be provided that the speed limiter is effective. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 12 500 clamping strokes, at the latest (This moves the lubricant back to the surfaces of the force transmission, so that the clamping force is retained for longer). 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
- Page 13 Replace damaged parts with original SCHUNK spare parts. Replace the chuck jaw mounting screws if there are signs of wear or damage. Only use screws with a quality of 12.9. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
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Page 14: Substantial Modifications
Only allow specialists to remedy malfunctions. Spare parts Only ever use original SCHUNK spare parts. Environmental regulations Comply with the applicable legal norms when disposing of waste. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 15: Using Personal Protective Equipment
When using this product, you must comply with the relevant health and safety at work rules and you must use the required personal safety equipment (minimum: category 2). 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 16: Warranty
Observe the maximum number of clamping cycles } 6 [/ 19] Observe the specified maintenance and lubrication intervals, } 9 [/ 37] Parts touching the workpiece and wear parts are not included in the warranty. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 17: Torques Per Screw
(screw quality 12.9) Screw size Max. admissible torque M (Nm) Tightening torques for the protection sleeve mounting screws (screw quality 8.8) Screw size Tightening torques M (Nm) 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 18: Scope Of Delivery
Scope of Delivery 5 Scope of Delivery Power chuck Fastening screws T-nuts with screws or 3 Jaw-Nuts Mounting wrench Eye bolt from size 210 and up 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 19: Technical Data
Control of function (piston movement and actuation pressure) has to be accomplished in accordance with the guidelines of the professional association. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 20: Clamping Force / Speed Diagrams
Clamping force per jaw Center of gravity Center of gravity radius Max. jaw center of gravity eccentricity in axial direction Max. actuating force Clamping force / speed diagram ROTA NCKplus 165-45 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 21 Technical data Clamping force / speed diagram ROTA NCKplus 210-52 Clamping force / speed diagram ROTA NCKplus 250-75 Clamping force / speed diagram ROTA NCKplus 315-91 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
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Page 22: Calculations For Clamping Force And Speed
F . Consequently, the spmin workpiece is released spontaneously. Do not exceed the calculated RPM. Do not fall below the necessary minimum clamping force. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 23 NOTICE For safety reasons, in accordance with DIN EN 1550, the centrifugal force may be a maximum of 67% of the initial clamping force. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
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Page 24: Calculation Example: Required Initial Clamping Force For A Given Speed
Note: Masses of the jaw mounting screws and T-nuts are not taken into account. First the required effective clamping force F is calculated using the machining force stated: Initial clamping force during shutdown: 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 25: Calculation Of The Permissible Speed In Case Of A Given Initial Clamping Force
The following data is known from previous calculations: Initial clamping force during shutdown F = 17723 N Machining force for machining job F 3000 N (application- specific) 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 26: Grades Of Accuracy
6.3, as well as uneven lubricant application. In order to prevent damage resulting from these residual risks, the entire rotor is to be dynamically balanced in accordance with DIN ISO 21940-11. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 27: Mounting Of The Chuck To The Machine Spindle
It must also be ensured that the surface of the end face is chamfered and clean at the bores. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 28: Threading Of Drawnut
G will be achieved by boring the blank draw nut. NOTICE Tighten the mounting bolt accroding to the specified torque } 4 [/ 17]. If tightening torque is insufficient or too strong, bolts might brake. Use only attached bolts. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 29: Mounting
(figure Next, turn in the fastening screws and tighten them slightly. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 30 Risk of injury by falling down of the chuck when assembling with reduction and extension flange on vertically hanging spindle. Do not remove the mounting plate before screwing in the mounting screws of the chuck. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
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Page 31: Mounting The Chuck By Means Of A Direct Mount
Chuck size [mm] max. radial run- max. axial run-out out error [mm] error [mm] 0,01 0,01 0,02 0,03 0,02 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 32: Mounting The Rota Nckplus Chuck With Straight Recess Mount
T-nuts (12). Unscrew the cap head screws (10) and draw out the protection sleeve (4). Chuck body Draw nut Base jaw Retainer ring Piston Flange Screws Mounting wrench 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 33 Mount the top jaws firmly on the base jaws with the T-nuts (12) and screws according to the markings 1, 2 and 3. Dismounting of the spindle is carried out in reverse order. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
- Page 34 Never grasp into the uncovered chuck mechanics! Bolt tightening steps. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
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Page 35: Function
} 4 [/ 17]. NOTE Tighten the jaw fastening screws with a dynamometric key. Never carry out this work by using an extension rod or by applying hammer blows. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 36: Disassembly And Assembly Of The Chuck
Clean all parts of dirt and grease and check for damage. Before mounting, grease well with lubricant LINO MAX. Only use SCHUNK original spares when replacing damaged parts. Mounting of the chuck follows in reverse order. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 37: Maintenance
If clamping force has dropped too low, or if base jaws and piston cannot be moved perfectly, it is necessary to disassemble the chuck to clean it and to relubricate it. Only use SCHUNK original spares when replacing damaged parts. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 38: Changing The Top Jaws
/ coolant utilization every 8 hours high / coolant utilization after 1200 hours or as Total cleaning with disassembly of the needed chuck, depending on type and degree of contamination 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 39: Disposal
Dispose of the chuck's metal parts as scrap metal. Alternatively, you can return the chuck to SCHUNK for proper disposal. 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 40: Assembly Drawing
Assembly drawing 11 Assembly drawing 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... -
Page 41: Spare Parts
Designation Quantity Chuck body Base jaws Piston Protection sleeve Screws Screws Screws T-nut Grease nipple draw nut Retainer ring Spring clamping element Mounting wrench Locking bolt Eye bolt 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en... - Page 42 02.00 | ROTA NCK plus | Power Chuck | en | 0889048-en...
- Page 43 H.-D. SCHUNK GmbH & Co. Spanntechnik KG Lothringer Str. 23 D-88512 Mengen Tel. +49-7572-7614-0 Fax +49-7572-7614-1099 info@de.schunk.com schunk.com Folgen Sie uns I Follow us Wir drucken nachhaltig I We print sustainable...
- Page 44 2B, NCA, NCD, NCE, NC, NCF, NCK, NCO, NCR, NCS, NCX, TH, THW Heinz-Dieter SCHUNK GmbH & Co. Spanntechnik KG certifies that the above-mentioned products, when used as intended and in compliance with the operating manual and the warnings on the product, are safe according to the national regulations and: −...
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