Worm Gear Reducers (MRT) - Rotor UK

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INDEX WORM-GEAR UNITS 1 GENERAL 4 2 DESIGN 4 3 TYPE IDENTIFICATION 4 4 GEAR UNIT SELECTION 6 5 SERVICE FACTOR 6 6 RADIAL AND AXIAL SHAFT LOADS 7 7 PERFORMANCE DATA 8 8 COMBINATION OF GEAR UNITS WITH ELECTRIC MOTORS BASED ON OUTPUT POWER 39 9 DIMENSIONS OF INPUT FLANGE 40 10 DIMENSIONS OF INPUT HOLLOW SHAFT 40 11 COMBINATION OF SIZE IEC ELECTRIC MOTORS WITH GEAR UNITS 41 12 DIMENSIONS 42 13 CROSS COMBINATION OF TWO GEAR UNITS 53 14 TABLE OF WEIGHT 53 15 WORM-GEAR PARAMETERS AND REVERSIBILITY / SELF-LOCKING PROPERTIES 54 16 ACCESSORIES 55 17 SPARE PARTS 56 18 LUBRICANTS 58 19 MRT 28 SMALL WORM-GEAR UNIT 59 20 MRT 80AP / RT 80AP WORM-GEAR UNIT WITH PLANETARY REDUCTION 62 21 MRT 2850 DOUBLE WORM-GEAR UNIT 65 22 ATC – MAT GEARBOXES WITH A STEP ON THE INPUT SHAFT 66 23 ELECTRIC MOTORS 70 3 prior to alterations
MRT..A WORM-GEAR UNITS 1. GENERAL Modern design, proved quality, reliability and the involute gear profile used at the worm gearing guarantee trouble-free service of RT/MRT..A series gear units. The RT/MRT 30A to RT/MRT 80A gear unit housings, feet and flanges are made of aluminium alloy and are supplied unpainted as standard. The RT/MRT 100A to RT/MRT 180A gear units housings are of cast iron and are supplied RAL5021 green-blue painted. By request any worm-gear unit can be supplied in stainless steel execution. Characteristic properties of worm-gear units – High gear ratio 5 to 100 achieved by one gear unit only – Noise-free operation – High load capacity – Self-locking ability – Reduced weight – Easy integration to the driven machine 2. DESIGN The RT/MRT 30A to RT/MRT 80A gear units are supplied as FT-RL as standard. FF, FB flanges and feet enable combinations as shown in the Mounting Position Table. As the flanges and feet are not parts of the compact housing, the final mounting position can be modified at later stage as required. Fig. 2.1 Flanges & Feet Ground worm with ZI involute profile made of cemented and hardened steel is used for the complete RT/MRT 30A to RT/MRT 180A series. The worm wheel is made of G – CuSn12Ni bronze cast on a steel hub. Precise gearing with involute profile is advantageous for its high efficiency, minimum friction and noise-free operation. 3. TYPE IDENTIFICATION Identification of basic design RT.. Worm-gear unit with the solid input shaft MRT.. Worm-gear unit with an electric motor or with hollow input shaft fitted with a flange for B5 mounted electric motor or B14A mounted motor or B14B mounted motor MRP.. Worm-gear unit with spur gear step (i = 3) at the input shaft MAT.. MRT worm-gear unit with ATC in-line gearbox at the input shaft ( i = 3,4 and/or i = 6, and/or i = 8 MRT..x.. Combination of two worm-gear units to achieve very high gear ratios i = 4,000. Gearbox combinations up to i = 10,000 ratio are available as an option. prior to alterations 4
Page 1: JANUARY 2005 WORM GEAR REDUCERS www
Page 6 and 7: Type Identification Diagram Example
Page 8 and 9: Table 6.1 Service Factors Kind of l
Page 10 and 11: Ratio i n 2 [rpm] Ratio i n 2 [rpm]
Page 12 and 13: 7.1 Table of Rated Data RT/MRT n 1
Page 14 and 15: 7.3 Table of Rated Data RT/MRT ..x.
Page 16 and 17: 7.3 Table of Rated Data RT/MRT ..x.
Page 18 and 19: 7.4 Table of Performance Data n 2 [
Page 40 and 41: 8. COMBINATION OF GEAR UNITS WITH E
Page 42 and 43: 11. COMBINATION OF SIZE IEC ELECTRI
Page 44 and 45: Table 12.1 Outline Drawings MRT..FT
Page 46 and 47: Table 12.3 Outline Drawings D C C D
Page 48 and 49: Table 12.4 Outline Drawings Size A
Page 50 and 51: Table 12.6 Outline Drawings J L1 L2
Page 52 and 53: Table 12.8 Outline Drawings L1 L4 L
Page 54 and 55:
13. CROSS COMBINATION OF TWO GEAR U
Page 56 and 57:
16. ACCESSORIES Table 16.1 Output S
Page 58 and 59:
Bearings and Seals Table 17.1 Worm
Page 60 and 61:
19. MRT 28 SMALL WORM GEAR UNIT Typ
Page 62 and 63:
Table 19.6 Dimensions MRT 28-FO 29
Page 64 and 65:
Table 20.2 Performance Data n 1 - 1
Page 66 and 67:
21. MRT 2850 DOUBLE WORM GEAR UNIT
Page 68 and 69:
Table 22.4 Rated Data of MAT i [-]
Page 70 and 71:
Table 22.6 Dimension 30 3 49 90 ∅
Page 72 and 73:
Table 23.2 4-pole, Synchronous Spee
Page 74 and 75:
Customer ORDER FORM Company (name)
Page 76:
The technical data contained in thi
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Worm Gear Reducers (MRT) - Rotor UK

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