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Summary of Contents for SCHUNK ROTA NCD
- Page 1 Power Chuck ROTA NCD 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: 0889034-en Version: 01.00 | 12/04/2023 | en...
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Page 3: Table Of Contents
9 Disassembly and assembly of the Chuck ............. 32 10 Maintenance ..................33 10.1 Lubrication ..................33 10.2 Maintenance intervals................34 10.3 Changing the stepped jaws ..............34 11 Spare parts ..................35 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... - Page 4 Table of contents 12 Assembly drawing ................36 13 Accessories ..................37 13.1 Center plug ..................37 01.00 | ROTA NCD | Power Chuck | en | 0889034-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 01.00 | ROTA NCD | Power Chuck | en | 0889034-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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 7: Basic Safety Instructions
[/ 19] if workpieces are not clamped properly, paying particular attention to the clamping forces specified by the manufacturer. if it is used in working environments that are not permissible. 01.00 | ROTA NCD | Power Chuck | en | 0889034-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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... - Page 9 Ensure that the working environment is clean before starting assembly and installation work. 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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-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). 01.00 | ROTA NCD | Power Chuck | en | 0889034-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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 15: Using Personal Protective Equipment
2.7 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). 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 16: Warranty
Observe the maximum number of clamping cycles } 6 [/ 19] Observe the specified maintenance and lubrication intervals, } 10 [/ 33] Parts touching the workpiece and wear parts are not included in the warranty. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 17: Torques Per Screw
Admissible torque 400 500 1050 1500 (Nm) Tightening torques for mounting screws used to attach top jaws onto the chuck (screw quality 12.9) Screw size Max. admissible torque M (Nm) 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 18: Scope Of Delivery
3 Combi T-nuts for NCD 130 / 132 / 160 / 165 6 T-nuts for NCD 210 / 215 / 250 / 255 / 315 / 400 / 500 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 19: Technical Data
It is also assumed the chuck is in perfect condition and lubricated with SCHUNK LINOMAX plus special grease . If one or more of these prerequisites is altered, the diagrams will no longer be valid. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... - Page 20 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 diagrams ROTA NCD 132-32 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
- Page 21 Technical data Clamping force / speed diagrams ROTA NCD 165-46 Clamping force / speed diagrams ROTA NCD 185-54 Clamping force / speed diagrams ROTA NCD 215-66 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
- Page 22 Technical data Clamping force / speed diagrams ROTA NCD 255-86 Clamping force / speed diagrams ROTA NCD 315-115 Clamping force / speed diagrams ROTA NCD 400-165 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
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Page 23: Calculations For Clamping Force And Speed
Mass of one top jaw [kg] Safety factor for clamping force Mass of chuck jaw set [kg] Safety factor for machining Centrifugal force torque [Kgm] Max. clamping force of chuck [N] Σ 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 24: Calculation Of The Required Clamping Force In Case Of A Given Rpm
Minimum required clamping force Speed of rotation Reduction in effective clamping force by the magnitude of the total centrifugal force, for gripping from the outside inwards. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... - Page 25 M and the centrifugal torque of the top jaws need to be added: 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
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Page 26: Calculation Example: Required Initial Clamping Force For A Given Speed
Take the centrifugal torque of the base jaw and top jaw specified from the "Lathe chuck data" table: For the centrifugal torque of the top jaw, the following applies: 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 27: Calculation Of The Permissible Speed In Case Of A Given Initial Clamping Force
= 1.5 (according to VDI 3106) Safety factor S = 1.5 (according to VDI 3106) NOTE: Masses of the jaw mounting screws and T-nuts are not taken into account. Identifying the permissible RPM: 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 28: 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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 29: Mounting Of The Chuck To The Machine Spindle
(Item 8) firmly on the draw bar. 7. Only for ROTA NCD 160 / 165 / 185 / 210: The chuck has to be aligned to the middle of the spindle. Lift it in front of the spindle nose and screw it manually until it contacts the stop of the draw bar. - Page 30 Check the clamping force and, if necessary, repeat the lubrication process. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
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Page 31: Function
Always secure the jaw fixing screws with the torque specified (see chapter "Torque per screw"} 4 [/ 17]). NOTICE Never carry out this work by using an extension rod or by applying blows from a hammer! 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 32: 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. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 33: Maintenance
Technical Condition The base jaws must move evenly at the smallest possible operating pressure (cylinder). This method is only applicable under certain conditions and cannot replace clamping force measurement. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 34: Maintenance Intervals
Soft top jaws must be hardened in the area of the screw’s counterbore. Just deep hardened no surface hardening. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... -
Page 35: Spare Parts
Screw DIN EN ISO 4762/10.9 (2nd bolt circle) Screw DIN EN ISO 4762/10.9 (Mounting) Screw DIN EN ISO 4762/10.9 (bushing) Grease nippel O-ring DIN 3771 (guiding bushing) Bar seal kit Square-ring 01.00 | ROTA NCD | Power Chuck | en | 0889034-en... - Page 36 Assembly drawing 12 Assembly drawing *only for ROTA NCD 250-600 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
- Page 37 After this, please close the power chuck so that the base jaws with the serration at the face are clamping the inserts (Item When the base jaws “bite” into the inserts (Item 2), the assemblyclaw (Item 4) can be removed. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
- Page 38 Assembly drawing Disassembly of the center plug from the power chuck is done in reverse order. CAUTION The disk is spring-loaded. 01.00 | ROTA NCD | Power Chuck | en | 0889034-en...
- Page 39 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 40 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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