RATHI Gear-Flex RGD User manual

INSTALLATION & OPERATION MANUAL
FOR
TYPE - RGD / RGS
RATHI TRANSPOWER PVT. LTD.,
Gaia Apex, S.No.33/2D, Viman Nagar,
PUNE – 411 014 (INDIA)

GEAR-FLEX COUPLING
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TABLE OF CONTENTS
SR. No. Topics Page No
Product details
1 Notes 3
2 Technical Data 5
3 Marking Details 8
4 Installation 9
5 Start-Up and Operations 14
6 Failures - Causes and Remedies 16
7 Maintenance and Repair 18
8 Storage 18
9 Coupling Spare Components 19
10 Declaration : ATEX 20

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1. NOTES
1.1 GENERAL INSTRUCTIONS
Please read the assembly instructions carefully before starting to operate the coupling. Pay
particular attention to the safety instructions.
The GEAR-FLEX coupling is approved for use in hazardous areas, if marked with CE
mark.
When using the coupling in potentially hazardous areas, pay special attention to the
safety instructions.
The assembly instructions are part of your product, and should be available with
maintenance personnel at all times until it is assembled.
Keep these instructions in a safe place, so they can be referred to by maintenance
personnel.
1.2 SAFETY AND ADVICE INSTRUCTIONS
Danger! Danger of injury to persons.
Caution! Damages on the machine possible.
Attention! Pointing to important items.
Caution! Hints concerning explosion protection.
1.3 GENERAL INSTRUCTIONS OF DANGER
Danger!
With assembly, operation and maintenance of the coupling make sure that the entire drive
train is protected against unintentional engagement. Serious injuries can occur from
rotating parts. Likewise, make sure to read through and observe the following safety
instructions:
• All operations on and with the coupling must be performed with “safety first” being the
primary consideration.
•Make sure to disengage the power supply before you perform your work.
•Protect the power supply against unintentional engagement, for example, by providing
hints at the place of engagement, or removing the power supply fuse.

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•Do not touch the coupling’s working area while it is operating.
•Protect the coupling against unintentional touch. Provide the necessary protective
covers and devices.
1.4 PROPER USE
Assembly, operation and maintenance work may be performed on the coupling only if:
• The assembly instructions are read carefully and understood.
• The personnel are technically qualified, & are authorized to do so by the company.
The coupling shall only be used in accordance with the technical data.
Unauthorized modifications to the coupling are not admissible. We decline any warranty due to
consequent damage. For future development of the product, we reserve the right to make
technical modifications.
The GEAR-FLEX coupling described here corresponds to the technical status at the time of
printing these assembly instructions.
1.5 INTENDED USE OF THE COUPLING
The intended use of the coupling is to connect input and output of a power transmission drive
with each other, in most cases these are two shafts. For Stationary Application Additional
equipment like brake drums, torque limiter, etc. can be added to the couplings and will not
change the intended use.
The coupling compensates within the technical limits misalignment and dampens shock loads or
vibrations.
MANUFACTURER’S DECLARATION IN CONFORMANCE TO EC MACHINE DIRECTIVE
2006/42/EC
Rathi Gear-Flex Couplings must be treated as components in the sense of the EC machine
directive 2006/42/EC.
Therefore M/s Rathi need not issue a separate declaration of conformity.
Information for safe use, installation, start up and operation can be found in this manual.

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2. TECHNICAL DATA
2.1 DIMENSIONS, SPEED & WEIGHTS
Double Engagement Couplings: TYPE-RGD
THIS END COVER PLATE CONSTRUCTION FOR SIZE RGD-80 ONWARDS.
Coupling
Rating
Bore Dia
mm Dimensions in mm Solid Hub
Siz
e kW at
100
RPM
Rated
Torque
Nm
Max.
Speed
RPM Min.
Bore
Max.
Bore ØA L C ØD ØF J M GAP Mas s Kg
WR²
Inertia
Kg m²
10 14 1337 8000 14 52 116 89 43 69 84 39 51 3 4.4 0.0052
15 30 2865 6500 22 65 152 103 50 86 105 48 61 3 9 0.0192
20 53 5061 5600 27 80 178 127 62 105 127 60 76 3 15 0.041
25 105 10027 5000 32 98 213 159 77 131 155 72 92 5 27 0.105
30 168 16043 4400 42 115 240 187 91 152 181 84 106 5 40 0.195
35 231 22059 3900 47 135 279 220 107 178 211 98 130 6 65 0.454
40 336 32086 3600 47 160 318 248 121 210 250 111 145 6 96 0.86
45 472 45073 3200 52 180 346 278 135 235 274 123 165 8 131 1.39
50 650 62070 2900 72 195 389 314 153 254 306 141 183 8 186 2.53
55 880 84034 2650 72 215 425 344 168 279 334 158 203 8 247 3.83
60 1205 115069 2450 77 235 457 384 188 305 366 169 228 8 299 5.21
70 1823 174084 2150 92 280 527 451 221 356 425 196 266 9 473 11
80 2639 252006 1750 95 285 590 508 249 385 485 243 300 10 682 20.72
90 3037 290012 1550 100 300 660 565 276 420 535 265 325 13 898 34.95
100 4100 391521 1450 120 330 711 623 305 470 595 294 355 13 1242 55.95
110 5300 506.1 1330 130 370 775 683 335 521 653 322 386 13 1608 86.14
NOTES:-
1. All dimensions in mm.
2. The outer dimensions of flanges are rounded up to nearest figure in above table.
3. For special versions contact M/s RATHI.
4. Couplings generally used up to 120°C. Can be used for higher temperatures by using proper grade of grease.
5. Weight & M.I. specified are with solid hubs.
6. Max. bore with key way as per DIN 6885/1.
7. ‘M’ minimum clearance required for aligning.