Rohm DURO-A RC Translation Of The Original Operating Manual
Power chuck with quick-action jaw replacement
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Summary of Contents for Rohm DURO-A RC
- Page 1 Translation of the Original Operating Manual Power chuck with quick-action jaw replacement DURO-A RC Store for reference Version 1.1 • 16.04.2019 RÖHM GmbH Heinrich-Röhm-Straße 50 89567 Sontheim/Brenz +49 7325 160 www.roehm.biz...
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Page 3: Table Of Contents
Permissible Operating Materials ............ 22 Transport.................... 22 Personal Protective Equipment and Personnel Qualification .... 22 Tapped Holes for Transport Purposes ............. 23 Assembly .................... 23 Personal Protective Equipment and Personnel Qualification .... 24 Assembly on Intermediate Disk ............... 24 DURO-A RC... - Page 4 Lubricating Jaw Guides .............. 42 7.3.3 Checking the Device for Correct Operation........ 42 7.3.4 Checking the Tightness of Screw Connections ........ 43 7.3.5 Inspection of the Power Chuck ............ 44 Storage ..................... 46 Troubleshooting.................. 46 Disposal .................... 47 DURO-A RC...
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Page 5: About This Operating Manual
About this Operating Manual This operating manual describes in detail the use, installation, assembly and maintenance of the power chuck DURO-A RC. The efficiency of the power chuck depends primarily on correct use and careful maintenance. This operat- ing manual serves as the leading document and is provided on delivery of the product. -
Page 6: Warranty And Liability
RÖHM GmbH offers a warranty of up to 36 months on the power chuck DURO-A RC purchased by you after delivery of the goods. The warranty is extended by a further 12 months in each case (max. 2 times / 36 months) if a fee-based inspection is carried by RÖHM GmbH within the first 12 months... -
Page 7: Conventions Of Presentation
Ø List of all measures which must be taken to prevent con- sequences. WARNING Indicates a possible danger which may lead to permanent personal injury or death if not avoided. Ø List of all measures which must be taken to prevent con- sequences. DURO-A RC 7 / 48... -
Page 8: Safety
Maximum protection of personnel and the environment from dangers and trouble-free operation is only possible when all safety instructions and warnings in this op- erating manual is observed. 8 / 48 DURO-A RC... -
Page 9: Intended Use
The maximum permissible clamping diameter of the jaws and the limits of the jaws must be observed. The power chuck DURO-A RC can be used for both wet and dry machining. The permissible usage and environmental conditions must be observed (Environmental and Operational Conditions [} 20]). -
Page 10: Improper Use
Any utilisation beyond the scope of the intended use poses risks and is not approved by RÖHM GmbH. Improper use refers to the following: ▪ use of the power chuck DURO-A RC for suspending loads; ▪ use of non-OEM parts as replacement parts; ▪ use of a non-OEM safety key;... -
Page 11: Obligations Of The Owner
(e.g. machining force, centrifugal force). In the event of a sudden drop or failure of the actuation energy, machining must be interrupted immediately and the tool or machine spindle stopped im- mediately. DURO-A RC 11 / 48... -
Page 12: Qualification Of Operating And Specialist Personnel
Work on the mechanical equipment may only be carried out by a trained mechanic or by personnel under the direction and supervision of a trained mechanic. Work on gas, pneumatic and hydraulic equipment may only be car- ried out by mechanics trained for this purpose. 12 / 48 DURO-A RC... -
Page 13: Personal Protective Equipment And Personnel Qualification
Safety | 2 Personal Protective Equipment and Personnel Qualification When working on and with the power chuck DURO-A RC, personal protective equipment must be worn. The owner is responsible for providing personal pro- tective equipment. ▪ Personal protective equipment must be in perfect condition when carrying out work. -
Page 14: Skin Irritation Due To Operating Materials
With rotating spindles, clamping of imbalanced workpieces generates a centri- fugal force which affects smooth running of the power chuck DURO-A RC. The power chuck DURO-A RC has a balance quality of G 6.3 as per DIN ISO 21940. Additional risks may occur due to insufficient rotational bal- ance. -
Page 15: Dangers Due To Power Failure
RC and the machine. In order to compensate for unwanted imbalances and to prevent resulting damage, the symmetrical mass distribution must be restored and the power chuck DURO-A RC dynamically balanced with the workpiece. 2.6.6 Dangers due to Power Failure An unexpected power failure during operation may lead to immediate failure of the clamping force of the power chuck. -
Page 16: Procedure In The Event Of Danger And Accidents
2. Remove the person involved from the danger zone and sit or lay the per- son down. 3. Call a doctor. Ø Do not make any changes to the accident site. 4. Administer first aid. Ø Stop any bleeding. Ø Cool burns. 5. Report all accidents to a superior. 16 / 48 DURO-A RC... -
Page 17: Product Description
Product Description | 3 Product Description About this Power Chuck 70 Safety key 8 Turning bolt 1 Basic body 2 Flange 36 Lubricating nipple 26 Chuck fixing screw 14 Base jaw DURO-A RC 17 / 48... - Page 18 4 Piston 3 Protective bushing The DURO-A RC is a power chuck with adjustable jaws (14), which is used to clamp regularly and irregularly shaped workpieces. It is only possible to assemble and disassemble the jaws (14) when the wedge bar (5) is unlocked.
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Page 19: Technical Specifications
ZA 300 ZA 380 mension Piston stroke Pass Connection thread M90x1.5 M110x2 M110x2 M138x2 M138x2 Max. actuating force Max. total clamp- ing force Max. speed 4,700 4,000 4,000 3,500 3,500 Moment of inertia 0.33 0.84 [kg*m²] DURO-A RC 19 / 48... -
Page 20: Environmental And Operational Conditions
With each jaw and tool change, the power chuck must be cleaned of coarse dirt with a broom or brush. Cleaning with compressed air is not permit- ted. 20 / 48 DURO-A RC... -
Page 21: Clamping Force-Speed Diagram
The reduction in clamping force is experimentally determined with the jaw as- signed to the power chuck. It is largely independent of the initial clamping force at a speed = 0. Total clamping force kN – speed rpm DURO-A RC 21 / 48... -
Page 22: Permissible Operating Materials
Ø Wear personal protective equipment. Ø Do not remain under suspended loads. Personal Protective Equipment and Personnel Qualification When working on and with the power chuck DURO-A RC, personal protective equipment must be worn. The owner is responsible for providing personal pro- tective equipment. -
Page 23: Tapped Holes For Transport Purposes
Crushing injuries and cuts due to start-up of the machine dur- ing set-up work. Flying parts may cause serious injuries. Ø Disconnect the power supply before assembly. Ø Protect the machine against being re-started. Ø Wear personal protective equipment. DURO-A RC 23 / 48... -
Page 24: Personal Protective Equipment And Personnel Qualification
5 | Assembly Personal Protective Equipment and Personnel Qualification When working on and with the power chuck DURO-A RC, personal protective equipment must be worn. The owner is responsible for providing personal pro- tective equipment. ▪ Personal protective equipment must be in perfect condition when carrying out work. -
Page 25: Disassembly / Assembly Threaded Ring / Adapter
4. Screw in the stop disk (13) with the assembly key (M). 5. Carry out assembly as described in Chapter Assembly on Machine Spindle [} 28]. It must be possible to turn the threaded ring / adapter. DURO-A RC 25 / 48... - Page 26 M110 M138 size Min. adapter length L1 The operator or manufacturer is fully responsible for the design of the threaded ring. RÖHM GmbH assigns this to the operator or manufac- turer of the threaded ring. 26 / 48 DURO-A RC...
- Page 27 1. Previously mount the special threaded ring / adapter with thread (12/1) for the corresponding draw connection (machine) onto the draw tube. 2. Carry out assembly as described in Chapter Assembly on Machine Spindle [} 28]. DURO-A RC 27 / 48...
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Page 28: Assembly On Machine Spindle
3. Move the piston of the power chuck to rear position. 4. Screw the crane lug into the power chuck. 5. Correctly attach the load-bearing equipment to the crane lug. 6. Position the power chuck on the machine spindle. 28 / 48 DURO-A RC... - Page 29 Ø It must be easy to turn the threaded ring (2). Otherwise, readjust the height of the crane. 8. Move the draw tube back and screw the power chuck onto the machine spindle with three chuck holding screws (provisionally 5 Nm). DURO-A RC 29 / 48...
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Page 30: Operation
Risk of burns due to hot surfaces. Burns on hands. Ø Do not touch the power chuck when in operation. Ø Allow the power chuck to cool down before carrying out neces- sary work. Ø Wear personal protective equipment. 30 / 48 DURO-A RC... -
Page 31: Personal Protective Equipment And Personnel Qualification
Ø Avoid skin contact with lubricants. Personal Protective Equipment and Personnel Qualification When working on and with the power chuck DURO-A RC, personal protective equipment must be worn. The owner is responsible for providing personal pro- tective equipment. -
Page 32: Basic Principles
The actual clamping force must be checked regularly. See Checking the Device for Correct Operation [} 42]. The following values apply specifically to the power chuck DURO-A RC and are required for calculation in accordance with the Röhm Norm 1391: Chuck size Centrifugal force M 0.0151... - Page 33 (jaw 1 in wedge bar 1, jaw 2 in wedge bar 2, jaw 3 in wedge bar 3.) 5. Push the jaw into the required position until the spring bolt perceptibly locks into the tooth space. Ø The jaws must not be positioned beyond the marking. DURO-A RC 33 / 48...
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Page 34: Adjusting Jaws
2. Insert the safety key into the relevant turning bolt until the pressure point is reached. 3. To unlock the jaw, turn the safety key clockwise to UNLOCK. Ø The wedge bar moves in. Ø The jaw is unlocked. 34 / 48 DURO-A RC... - Page 35 4. Move the jaw to the required position until the spring bolt perceptibly locks. Ø The jaws must not be positioned beyond the marking. 5. To lock the jaw, turn the safety key counter-clockwise to LOCK. 6. Remove the safety key. DURO-A RC 35 / 48...
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Page 36: Replacing Jaws
3. To unlock the jaw, turn the safety key clockwise to UNLOCK. Ø The wedge bar moves in. Ø The jaw is unlocked. 4. Pul the jaw out of the guide. 5. Lubricate the guide with a brush. 36 / 48 DURO-A RC... - Page 37 7. Push the jaw into the required position until the spring bolt perceptibly locks into the tooth space. Ø The jaws must not be positioned beyond the marking. 8. To lock the jaw, turn the safety key counter-clockwise to LOCK. DURO-A RC 37 / 48...
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Page 38: Clamping The Workpiece
Clamping length too short, projection Additional support with centre or length too long bezel Clamping Ø too large Insert larger chuck Workpiece too heavy and jaw step too Support with centre, jaw step short extended 38 / 48 DURO-A RC... -
Page 39: Maintenance
Maintenance Personal Protective Equipment and Personnel Qualification When working on and with the power chuck DURO-A RC, personal protective equipment must be worn. The owner is responsible for providing personal pro- tective equipment. ▪ Personal protective equipment must be in perfect condition when carrying out work. -
Page 40: Maintenance Interval
Skin irritations due to contact with lubricants. Lubricants may cause irritations in the event of contact with the skin. Ø When handling the power chuck, wear safety goggles, long work clothes and gloves. Ø Avoid skin contact with lubricants. 40 / 48 DURO-A RC... -
Page 41: Lubricating Conical Lubricating Nipples
(for grease quantity, see table). 2. Move through the complete stroke several times. Ø The grease is distributed. Ø After 400 clamping cycles, move through the complete stroke again at least twice. ü The power chuck is lubricated. DURO-A RC 41 / 48... -
Page 42: Lubricating Jaw Guides
Ø The jaw stroke must correspond with the value given in the table (Overview of Construction Sizes [} 19]). In the event of faults, the two end positions and the piston stroke of the clamping cylinder must be checked. 42 / 48 DURO-A RC... -
Page 43: Checking The Tightness Of Screw Connections
4.6 8.6 14.9 36.1 71 123 195 302 421 592 807 1,017 12.9 5.1 10 17.4 42.2 83 144 229 354 492 692 945 1,190 The table values do not apply to tightening torques expressly specified elsewhere! DURO-A RC 43 / 48... -
Page 44: Inspection Of The Power Chuck
11. Remove the threaded ring and the stop disk out of the power chuck from the rear of the chuck. Observe the bolt, as it can fall out of the power chuck due to the spring force. 44 / 48 DURO-A RC... - Page 45 ü The power chuck is cleaned. Cleaning with compressed air or a high-pressure cleaner is not permitted. Assembly of the power chuck The power chuck is assembled in reverse order. DURO-A RC 45 / 48...
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Page 46: Storage
Replace draw bar. Con- tact the Service depart- ment of RÖHM GmbH. The workpiece cannot be The workpiece diameter Use suitable top jaws or inserted. is greater than the power chuck. clamping diameter of the power chuck. 46 / 48 DURO-A RC... -
Page 47: Disposal
Obtain relevant information from the authorities. ▪ Rubber (e.g. O-rings) They must be disposed of in accordance with the valid regulations and the ap- plicable local provisions. Obtain relevant information from the authorities. DURO-A RC 47 / 48...
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