RS & RT WORM GEAR BOXES

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1 RS & RT WORM GEAR BOXES C-MRS-MRT ed rev00 GB

2 Product Description Multipurpose housing Aluminium die cast & Grey Iron Modular for all mountings Wormshaft ZI profile, hardened and ground. Alloy steel. Wormwheel Bronze cast on cast iron hub. Input IEC and NEMA motor adapters. Universal elastic coupling or traditional quill input. Oil seals NBR as standard; VITON and SILICONE on request. Bearings Ball or roller types. Tapered roller bearings for heavy duty operation. Output Hollow bore as standard. Single or double solid shaft on request. Modular attachments Helical one-stage gearbox, Output Flange, Torque Arm & Torque Limiter. Single worm gear boxes The worm gearboxes, RS and RT series, specifically designed for universal mounting, are manufactured with die cast housings and covers in aluminium up to the size 85 and cast iron from the size 0. Torques listed in selection tables are output torque values for the specific size, and motor powers are always referred to 440 rpm. Input Viton oil seals, fitted on request, allow free-trouble operation with 2-pole standard ac motors or 3000 rpm dc motors and Silicone oil seals for low temperatures. Gearboxes are delivered filled with synthetic long-life oil (without plugs), in quantities as recommended on page 9, and valid for all mounting positions. Selection table data are intended for service factor SF.0 i.e. 8-0 running hours per day, uniform load, less than 6 start/ stops per hour, and room temperature ranging from 5 to 35 C. Helical worm gear boxes The gearboxes, RA and TA series, made up of an independent single stage helical gearbox FXA fitted to a standard FRS or FTR gearbox, allow greater output torques and higher efficiency than the FRS and FRT gearbox with equivalent ratios

3 Product Description Two stage worm gear boxes The gearboxes, RS/RS and RT/RT series, are made up of two gearboxes RS or RT and offer a full selection of high reduction ratios to obtain the very low output speeds. AS, AD - Output shafts All the gearboxes are manufactured with hollow output shaft as standard version and, optionally, a single AS or double AD solid output shaft - made of steel C43 - can be supplied. An ASC safety shield for the opposite side of a single output shaft AS, is available on demand. Torque arms Standard gearboxes are supplied normally with covers on each side allowing torque arm fixing when gearboxes have to operate as shaft mounted units. The torque arm, standard or with Vulkollan vibration-damping, is made of extra thick plate and white galvanized. Directive ATEX The gearboxes Series VARVEL-ATEX, delivered on request, are designed and manufactured according to Directive 94/9/CE «ATEX» and therefore, they are qualified for installation in potentially explosive atmospheres of: Zones of Group II, Category 2 (or 3), Explosion hazard with gas presence (Zones or 2). The gearboxes VARVEL-ATEX are identified by the marking: II 2 GD ck IP66 T max =35 C - 3 -

4 Product Description GENERAL SPECIFICATIONS Range Sizing Sizes: 9 RS + 7 RT 55 reduction ratios 3020 Nm max. output torque According to BS72. 5,000 hrs average lifetime with service factor SF Housing, Covers Pressure die cast aluminium AlSi2Cu2Fe till size 85 and cast iron from size 0. Toothed parts Worms of steel 20MnCr5 CH and tooth profile ZK ground. Wheels of bronze CuSn2 on CI hub. Shafts & Keys Steel C43 Shafts h6 - Bores E8 Keys according to DIN6885 B Bearings Ball- or roller-types according to sizes and technical requirements Oil seals Lubricant Type NB - nitrile-butadiene with additional anti-dust lip accord-ing to DIN 3760 Synthetic long-life oil Grade ISO VG 320 Baking painting RS/RT 0: epoxy powder paint, standard colour RAL 702. RS/RT28-85: real aluminium

5 Designation GEAR BOX DESIGNATION F SR [../] 40 B3 28 IEC7 B4 (OPS, OPP) OPS = Standard Options, pages OPP = Options at the foot of the page B5, B4 = Motor form Motor frame Reduction ratio Gear box munting Gear box size RS (28, 40, 50, 60, 70, 85, 0, 30, 50) - RT (28, 40, 50, 60, 70, 85, 0) Helical stage size RA (63/, 7/, 80/, 00/) st stage size (28/, 40/, 50/, 60/, 70/) Gear box size M = Geared motor F = IEC input flange S = without IEC flange = Nothing - Input free shaft MOTOR DESIGNATION MT 0,37 kw 7b4 B4 230/400/50 IP55 F X Terminal box position Cl. F (std) = Insulation class IP55 (std) = Protection Voltage / frequency X3 X3 Power MT = Three-phase motor MM = Single-phase motor MA = Brake motor B5 or B4 = Mounting IEC size and number of poles X4 RT X2 X4 RS X2 std X X OPTIONS OPP The standard fitting side, unless otherwise requested, is the gearbox right side when seen from input. ACø - Not std hollow shaft ø mm GRM - Reduced end play CS - Not std output bearings LNS - Not std lubrication FL - Additional output flange FL VB - NDE wormshaft extension - 5 -

6 Mounting positions RS RS, RA, RS/RS Output S - SA I - IA D - DA PC - PC FL - FA - FB - PA - PB B3 (std) B3 (std) B3 (std) B5 (std) B5 (std) B5i V5 V5 V5 B5 B5a B5ai B8 B8 B8 B5 B5b B5bi V6 V6 V6 B5 B5c B5ci B6 B6 B6 V V Vi B7 B7 B7 V3 V3 V3i RA Input 0 (std)

7 RS Gear boxes Series RS and RT Mounting positions RS / RS Output S - SA I - IA D - DA PC - PA - PB FL - FA - FB

8 Mounting positions RT RT TA RT/RT Output B3 (std) B6 B7 B8 V5 V6) F (std Fi TA Input 0 (std) 2 3 RT/RT Input 20 (std)

9 Service Factors - Weights - Lubricants SERVICE FACTORS FS = F F 2 Load type F uniform variable shocks Starts/ stops F 2 Starts per hour 3-4 h h h WEIGHTS AND LUBRICANTS (litres) RS - RT kg l RA - RT kg l / l 2 RS / RS RT / RT kg l / l / / / / / / / / / / / / / / / / / / / / / / / / / / /.50 * / /0.23 *60/ /2.75 * / /0.35 *70/ / / / / /.50 00/ /.50 *00/ /2.75 * only RS *00/ /4.40 XA kg l

Input external loads Input radial (overhung) loads R [dan] A = 0,2 R min - 2800 400 900 700 500 300 RS-RT 28 5 7 8 9 0 2 RS-RT 40 5 6 7 8 20 RS-RT 50 5 20 22 25

10 Input external loads Input radial (overhung) loads R [dan] A = 0,2 R min RS-RT RS-RT RS-RT RS-RT RS-RT RS-RT RS-RT RS RS

Output external loads A 2 = 0.2 x R 2 Output radial (overhung) loads R 2 [dan] with standard bearings min - 280 200 40 93 70 50 35 29 25 20 8 4 Nr. rodam.

11 Output external loads A 2 = 0.2 x R 2 Output radial (overhung) loads R 2 [dan] with standard bearings min Nr. rodam. RS-RT RS-RT RS-RT RS-RT RS-RT RS-RT RS-RT RS RS RS: 6008 / RT: RS: 600 / RT: RS: 6009 / RT: RS: 602 / RT: 622 Output radial (overhung) loads R 2 [dan] with heavy duty bearings min Nr. rodam. RS-RT RS-RT RS-RT RS-RT RS-RT RS-RT RS-RT RS RS RS: / RT: RS: 3200 / RT: RS:3202 / RT:

12 Motor Frames FRS - FRT FRS FRT IEC min - i = i / / *30 00/ *50 00/ * only RS - B5 & B4 - B5 - B5 & B4 - B5 (Elastic coupling G input) (Elastic coupling G input) (Quill IEC input) (Quill IEC input) - 2 -

13 FRA - FTA Gear boxes Series RS and RT Motor Frames FRA IEC i = /40 63/50 56 B5&B4 63/ /40 63/50 63 B5&B4 63/ / /60 7 7/70 B5&B4 7/ / / /85 B5&B4 80/0 80/ / /85 90 B5&B4 80/0 *00/0 *00/30 90 B5 00 B5 *00/50 90 B5 00 B5 * only RS * - Helical stage input * * - Helical stage output & FRS-FRT input - ø05 x4 - ø20 x 9 - ø40 x 24 - ø ø40 x 28 - ø (Wormshaft bore ø38 mm + Bush ø38/ø28) - 3 -

14 Selection Table 2800 min - Single worm gear boxes RS - RT RS RT i = min kw Nm eff kw 2.,5,2 0,82 0,56 0,49 0,36 0,30 0,26 0,2 0,9 0,5 40 Nm eff ,87 0,85 0,8 0,78 0,72 0,66 0,62 0,6 0,57 0,54 0,5 kw 3.8 3,0 2,0,5 0,95 0,92 0,63 0,5 0,43 0,33 0,3 0,23 50 Nm eff ,88 0,86 0,82 0,8 0,75 0,69 0,66 0,64 0,58 0,58 0,52 kw 5.8 4,4 3,5 2,6,9,6, 0,72 0,73 0,60 0,52 0,34 60 Nm eff ,88 0,87 0,84 0,82 0,76 0,73 0,7 0,66 0,64 0,6 0,58 kw 8. 5,7 4,3 3,2 2,4 2,2,5,2,0 0,80 0,69 0,54 70 Nm eff ,89 0,88 0,85 0,83 0,78 0,74 0,7 0,68 0,63 0,6 0,58 kw 3.0 9,6 7,5 5,3 4,3 3, 2,4 2,0,7,3, 0,93 85 Nm eff ,89 0,88 0,86 0,8 0,8 0,76 0,72 0,7 0,67 0,64 0,6 kw ,5 4,8 0,7 8,6 7,0 5,0 4,5 3,6 3, 3,0 2, 0 Nm eff ,9 0,88 0,86 0,84 0,79 0,76 0,73 0,7 0,7 0,67 0,62 kw *30 Nm eff kw *50 Nm eff * only RS - 4 -

15 400 min - Single worm gear boxes RS - RT Gear boxes Series RS and RT Selection Table RS RT i = min kw ,45 0,33 0,23 0,6 0,6 0,0 0,09 0,08 0,06 0,05 0,03 28 Nm eff kw.5, 0,8 0,55 0,38 0,37 0,25 0,2 0,8 0,4 0,2 0,09 40 Nm eff kw 2.7,8,3 0,93 0,63 0,63 0,4 0,37 0,3 0,25 0,20 0,3 50 Nm eff kw 4. 2,8 2,3,6,2,0 0,75 0,62 0,54 0,46 0,37 0,25 60 Nm eff kw 5.7 4,0 3, 2,2,8,5,2 0,84 0,74 0,58 0,50 0,37 70 Nm eff kw 9. 6,2 4,6 3,4 2,9 2,2 2,0,4,2 0,96 0,86 0,55 85 Nm eff kw ,5 9,0 6,5 5,7 4,4 3,5 2,7 2,2 2,0,5, 0 Nm eff kw ,5 7,5 5,5 3,9 3,7 2,7 2,4,8 *30 Nm eff kw ,5 9,5 8,0 5,9 5, 3,8 3,3 2,6 *50 Nm eff * only RS - 5 -

16 Selection Table 900 min - Single worm gear boxes RS - RT RS RT i = min kw ,36 0,24 0,8 0,3 0,2 0,08 0,07 0,06 0,04 0,03 0,02 28 Nm eff kw.2 0,84 0,64 0,44 0,30 0,28 0,9 0,6 0,4 0,2 0,0 0,08 40 Nm eff kw 2.,5, 0,75 0,52 0,5 0,35 0,28 0,25 0,9 0,7 0,2 50 Nm eff kw 3.2 2,4,9,4,0 0,87 0,56 0,43 0,40 0,32 0,28 0,9 60 Nm eff kw 4.5 3,2 2,4,7,3,2 0,87 0,64 0,53 0,42 0,38 0,30 70 Nm eff kw 7.2 5,0 3,9 3,0 2,,8,5,0 0,83 0,73 0,64 0,5 85 Nm eff kw ,8 8,0 5,7 4,4 3,7 2,7 2,3,9,7,5 0,94 0 Nm eff kw ,9,7 8,4 6,5 5, 4, 3, 2,8 2,,8,3 *30 Nm eff kw ,8 5,9 2,2 9,3 7,3 5,6 4,5 3,3 2,9 2,5 2,0 *50 Nm eff * only RS - 6 -

17 700 min - Single worm gear boxes RS - RT Gear boxes Series RS and RT Selection Table RS RT i = min kw ,29 0,2 0,4 0,0 0,0 0,06 0,05 0,04 0,03 0,02 0,0 28 Nm eff kw.00 0,74 0,54 0,39 0,26 0,24 0,7 0,4 0,2 0,0 0,09 0,07 40 Nm eff kw.8,4 0,92 0,65 0,44 0,43 0,29 0,24 0,2 0,6 0,5 0,2 50 Nm eff kw 2.8 2,0,6, 0,87 0,73 0,49 0,35 0,34 0,26 0,24 0,7 60 Nm eff kw 3.9 2,7 2,,4,,0 0,7 0,55 0,46 0,36 0,32 0,24 70 Nm eff kw 6.2 4,6 3,5 2,5,9,5,2 0,93 0,78 0,59 0,56 0,44 85 Nm eff kw ,5 6,8 4,9 3,9 3,3 2,3 2,0,7,5,2 0,79 0 Nm eff kw ,8 0,3 7,4 5,6 4,4 3,6 2,7 2,4,8,6, *30 Nm eff kw ,0 3,7 0,6 8, 6,2 4,9 3,8 3,0 2,6 2,3,7 *50 Nm eff * only RS - 7 -

18 Selection Table 400 min - Helical worm gear boxes RA - TA i = min XA63 kw Nm R 2 [N] XA7 kw Nm R 2 [N] XA80 kw Nm R 2 [N] XA00 kw Nm R 2 [N] A 2 = 0.2 x R 2 Dimensions: page 44 i = i i i = 3.5 min i /40 kw Nm eff /50 kw /50 Nm eff /60 kw /60 Nm /60 eff /70 kw /70 Nm eff /85 kw /85 Nm eff /0 kw /0 Nm eff RA kw /30 Nm eff RA kw /50 Nm eff

19 400 min - Helical worm gear boxes RA - TA Gear boxes Series RS and RT Selection Table i = i x i i = 6.3 min i /40 kw Nm eff /50 kw /50 Nm eff /60 kw /60 Nm /60 eff /70 kw /70 Nm eff /85 kw /85 Nm eff /0 kw /0 Nm eff kw /30 Nm eff kw /50 Nm eff

20 Selection Table 400 min - Helical worm gear boxes RA - TA i = i x i i = 8 min i /40 kw Nm eff /50 kw /50 Nm eff /60 kw /60 Nm /60 eff /70 kw /70 Nm eff /85 kw /85 Nm eff /0 kw /0 Nm eff RA kw / 30 Nm eff RA kw / 50 Nm eff

21 400 min - Two stage worm gear boxes RS/RS - RT/RT Gear boxes Series RS and RT Selection Table i = i x i RS/RS min RT/RT i = i 2 = /28 W Nm eff /40 W Nm eff /50 W Nm eff /60 W Nm eff /70 W Nm eff /85 W Nm eff /0 W Nm eff RS/RS 60/30 RS/RS 70/50 kw Nm eff kw Nm eff

22 Selection Table 400 min - Geared motors 0.06 kw min - i = Nm SF kg MRS-MRT >3 3.6 MRS-MRT >3 3.6 MRS-MRT >3 3.6 MRS-MRT MRS-MRT MRS-MRT MRA-MTA 63/ >3 6.5 MRS-MRT MRS-MRT MRA-MTA 63/ >3 6.5 MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ kw min - i = Nm SF kg MRS-MRT >3 3.7 MRS-MRT >3 3.7 MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRA-MTA 63/ >3 6.6 MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 40/ MRS-MRT 40/ kw min - i = Nm SF kg MRS-MRT 40/ MRS-MRT 40/ kw min - i = Nm SF kg MRS-MRT >3 4.8 MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ kw min - i = Nm SF kg MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRS-MRT MRA-MTA 63/ MRS-MRT MRS-MRT MRA-MTA 63/ MRA-MTA 63/ MRS-MRT 28/ MRA-MTA 63/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 28/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ kw min - i = Nm SF kg MRS-MRT >3 8.3 MRS-MRT 40 MRS-MRT >3 > MRS-MRT MRS-MRT MRS-MRT MRS-MRT

23 400 min - Geared motors Gear boxes Series RS and RT Selection Table 0.25 kw min - i = Nm SF kg MRA-MTA 7/ MRS-MRT MRS-MRT MRA-MTA 7/ MRS-MRT MRS-MRT MRA-MTA 7/ MRS-MRT MRA-MTA 7/ MRS-MRT 40/ MRA-MTA 7/ MRS-MRT 40/ MRA-MTA 7/ MRS-MRT 40/ MRA-MTA 7/ MRA-MTA 7/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 50/ MRS-MRT 50/ MRS-MRT 50/ MRS-MRT 50/ kw min - i = Nm SF kg MRS-MRT >3 8.7 MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRA-MTA 7/ MRS-MRT MRS-MRT MRA-MTA 7/ MRS-MRT MRS-MRT MRA-MTA 7/ MRS-MRT MRA-MTA 7/ MRS-MRT 40/ MRA-MTA 7/ MRS-MRT 40/ MRA-MTA 7/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 40/ MRS-MRT 50/ MRS-MRT 50/ kw min - i = Nm SF kg MRS-MRT 40 MRS-MRT > MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRA-MTA 80/ kw min - i = Nm SF kg MRA-MTA 80/ MRA-MTA 80/ MRA-MTA MRA-MTA MRS-MRT MRA-MTA MRA-MTA MRS-MRT MRS-MRT kw min - i = Nm SF kg MRS-MRT >3 4 MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRS-MRT MRA-MTA 80/ MRA-MTA 80/ MRA-MTA MRA-MTA MRA-MTA MRS-MRT MRA-MRT MRS-MRT kw min - i = Nm SF kg MRS-MRT >3 9 MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRA-MTA MRA-MTA MRA-MRT MRA-MTA MRA 00/ MRS-MRT MRA 00/ MRA 00/ MRA 00/ MRS-MRT 70/ kw min - i = Nm SF kg MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT

24 Selection Table 400 min - Geared motors.5 kw min - i = Nm SF kg MRA-MTA 80/ MRS-MRT MRS-MRT MRS-MRT MRA-MTA 80/ MRS-MRT MRS-MRT MRA-MTA 80/ MRS MRA-MTA 80/ MRA-MTA 80/ MRA 00/ MRA 00/ MRA 00/ MRA 00/ MRA 00/ kw min - i = Nm SF kg MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS MRS MRA 00/ MRA 00/ MRA 00/ MRA 00/ MRA 00/ MRA 00/ kw min - i = Nm SF kg MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS MRS MRS MRA 00/ MRS MRA 00/ MRS MRA 00/ MRA 00/ MRA 00/ MRA 00/ kw min - i = Nm SF kg MRS MRS MRA 00/ MRA 00/ MRA 00/ MRA 00/ kw min - i = Nm SF kg MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS MRS MRS MRA 00/ MRS kw min - i = Nm SF kg MRS-MRT MRS-MRT MRS-MRT MRS MRS MRS MRS MRA 00/ MRA 00/ kw min - i = Nm SF kg MRS MRS MRS MRS MRS kw min - i = Nm SF kg MRS MRS MRS kw min - i = Nm SF kg MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS-MRT MRS MRS MRS

25 Electric Motors Gear boxes Series RS and RT Dimensions MOTOR IEC S / L 00 / 2 32 S / M 60 M / L D ( j6 ) x L 9 x 20 x 23 4 x 30 9 x x x x x 0 F F 3 M.5 M.5 M.6 M.6 M.8 M.8 M.0 2 G 2 ( j6 ) G 3 ( j6 ) M N R R X / Y / / / / 522 Y Y Z / Peso kg 2,5 4,5 6,0 0,0 3,5 2 / / / 78 Not binding dimensions

26 Dimensions Single worm gear boxes RS S I D FL PC RS

27 Single worm gear boxes RS Dimensions RS A AA B B C , C D (H7) D* (H7) D 2 (h6) E F F 5, G (H8) G (f8) H H H ,5 2,5 9 26, ,5 38 H I K * 93-94* 7-8* 34-37* 5-53* 65-66* 9-2* L M , M 6,3 2,8 27,3 28,3 3,3 35,3 45,3 5,8 59,3 M 2 0,2 2,5 6 22,5 22, N N P , P P , , R R S , ,5 74, S S ,5 2, ,5 5 5 U V 6,5 (4) 9 (4) 9 (4) (4) 3 (4) 3 (4) 5 (8) 5 (8) 9 (8) V M6x6 (4) M6x9 (4) M8x2 (4) M8x5 (8) M8x8 (8) M0x20 (8) M2x2 (4) M2x24 (4) M4x30 (8) V 2 M4x0 M4x0 M6x5 M8x20 M8x20 M8x20 M8x20 M0x22 M2x25 Z D* - Bores on request V - 90 for RS28 (*) - IEC7-B4 (FRS50) IEC7-B4 (FRS60) IEC 80-B4 (FRS70) IEC 90-B4 (FRS85) (*) - IEC00/2-B4 (FRS0) IEC 00/2-B5 (FRS30) IEC 60-B5 (FRS50) Motor Dimensions: page 25 Not binding dimensions

28 Dimensions Helical worm gear boxes RA S I D FL PC RA

29 Helical worm gear boxes RA Gear boxes Series RS and RT Dimensions RA 63/40 63/50 63/60 7/50 7/60 7/70 7/85 80/60 80/70 80/85 80/0 00/0 00/30 00/50 A AA B B C , C D , D* D E F F G G H H H 2 5 7,5 2,5 7,5 2,5 9 26,5 2,5 9 26, ,5 38 H I I K 53, , 250, 264, * 88* 24* 229* * 326* L M 2,8 27,3 28,3 27,3 28,3 3,3 35,3 28,3 3,3 35,3 45,3 45,3 5,8 59,3 M 2 2,5 2,5 2, ,5 22,5 22,5 22, ,5 22,5 N N P 82 9,5 6 9, P P , , ,5 72, R R S , , ,5 57, ,5 74,5 74, S S 2 2 2,5 2,5 2,5 2, , ,5 2,5 5 5 U V 9 (4) 9 (4) (4) 9 (4) (4) 3 (4) 3 (4) (4) 3 (4) 3 (4) 5 (8) 5 (8) 5 (8) 9 (8) V M6x9 M8x2 M8x5 M8x2 M8x5 M8x8 M0x2 M8x5 M8x8 M0x2 M2x2 M2x2 M2x2 M4x3 (4) (4) (8) (4) (8) (8) (8) (8) (8) (8) (8) (8) (8) (8) V 2 M4x0 M4x0 M4x0 M6x5 M6x5 M6x5 M6x5 M8x20 M8x20 M8x20 M8x20 M8x20 M8x20 M8x20 Y Z D* - Bores on request V - 90 for RS28 (*) - IEC7-B4 (FRA 7/.) - IEC00-B5 ( FRA30 ) - IEC00-B5 ( FRA50 ) Motor Dimensions: page 25 Not binding dimensions

30 Dimensions Double worm gear boxes RS/RS S I D FL PC RS/RS

31 Double worm gear boxes RS/RS Dimensions RS/RS 28/28 28/40 28/50 28/60 40/70 40/85 50/0 60/30 70/50 A AA B B C , C D (H7) D* (H7) D 2 (h6) E F F 5, G (H8) G (f8) H H H ,5 2,5 9 26, ,5 38 H H H H I I K 99, , K 57,5 57,5 57,5 57,5 70,5 70, * 93-94* 7-8* L M M 6,3 2,8 27,3 28,3 3,3 35,3 45,3 5,8 59,3 M 2 0,2 0,2 0,2 0,2 2,5 2,5 6 22,5 22,5 N N P , P P , , R R S , ,5 74, S S ,5 2, ,5 5 5 S U V 6,5 (4) 9 (4) 9 (4) (4) 3 (4) 3 (4) 5 (8) 5 (8) 9 (8) V M6x6 (4) M6x9 (4) M8x2 (4) M8x5 (8) M8x8 (8) M0x20 (8) M2x2 (4) M2x24 (4) M4x30 (4) V 2 M4x0 M4x0 M4x0 M4x0 M4x0 M4x0 M6x5 M8x20 M8x20 Y Z D* - Bores on request V - 90 for RS28 (*) - IEC7-B4 (FRS50) - IEC7-B4 (FRS60) - IEC 80-B4 (FRS70) Motor Dimensions: page 25 Not binding dimensions - 3 -

32 Dimensions Alternative Mountings RS SA IA DA FA FB FR PA PB

33 Alternative Mountings RS Dimensions RS SA - IA - DA A B F H FA F G (H8) P R U V 6.5 (4) 9 (4) (4) 0.5 (4) (4) Z FB F G (H8) P R U V (4) (4) (4) 3 (4) Z FR F G (h8) P R U V (4) Z PA G (h8) P R S S V M6x8 (4) M6x2.5(4) M8x4 (4) M8x4 (4) PB G (H8) P R S S V M6x2.5(4) M8x4 (4) Not binding dimensions

34 Dimensions Accessories RS AS AD ASC Safety cap for AS BR BRV SL TLE TLI VB TLI Oil quantity Type / Litres

35 Accessories RS Dimensions RS AS & A AD B C C D 5 (g6) 4 9 (8) 24 (25) (35) E L M N V 5 M5x0 M8x20 M8x20 M8x20 M8x20 M0x25 M0x ASC E L S BR A BRV C F F F G I R S S SL L P S TLE D E E L L M TLI D (H7) D D x x x x x x x L M 5.4* * N (H9) VB D L M M N V 8 M4x0 M4x0 M6x5 M8x20 M8x20 M8x20 M8x * = Undersized key - D 5 (..) = Diemetre on request

36 Dimensions Single worm gear boxes RT B3 F, [FV], {FL} RT

37 Single worm gear boxes RT Dimensions RT A A AA 97 2, AA 7 9, B B C ,5 C D (H7) D* (H7) D 2 (h6) F 80 0 {0} 25 [60] 25} 80 {80} F G (H8) {60} 70 [0] {70} 5 {5} G (h8) H ,5 H 57 7, ,5 H ,5 I K * 93-94* 7-8* 34-37* 5-53* L M ,5 46 M 6,3 2,8 27,3 28,3 3,3 35,3 45,3 M 2 0,2 2,5 6 22,5 22, N N P {99} 93 [90,5] {23} 86 {6} 3 P P {58} 44 [4,5] {74} 25 {56} ,5 R {87} 90 [30] {90} 50,5 {50,5} R S 27,5 38,5 46, S S 2 2,5 2, ,5 U 0 4 {4} 5 [] {5} 6,5 {6,5} V 7 9 {9} 0,5 [9] {9} {} V M6x0 (4) M6x8,5 (4) M8x0 (4) M8x6 (8) M8x6 (8) M0x8 (8) M0x2 (8) V 2 M4x0 M4x0 M6x5 M8x20 M8x20 M8x20 M8x20 Z 7 6 {8} 0 [3] {0} 0 {0} Z , ,5-7,5 5,5-8, D* - Bores on request V - 90 for RT28 (*) - IEC7-B4 (FRS50) - IEC7-B4 (FRS60) - IEC 80-B4 (FRS70) - IEC 90-B4 (FRS85) - IEC00/2-B4 (FRS0) Motor Dimensions: page 25 Not binding dimensions

38 Dimensions Helical worm gear boxes TA B3 F, [FV], {FL} TA

39 Helical worm gear boxes TA Dimensions TA 63/40 63/50 63/60 7/50 7/60 7/70 7/85 80/60 80/70 80/85 80/0 00/0 A A AA 2, AA 9, B B C ,5 C D (H7) D* D 4 (h6) F {25} {25} F G (H8) 60 {60} 70 [0] 5 70 [0] {70} {70} G (h8) H ,5 H 7, ,5 H ,5 I I K 53, ,5 250,5 264,5 L M 2,8 27,3 28,3 27,3 28,3 3,3 35,3 28,3 3,3 35,3 45,3 M 2 2,5 2,5 2, ,5 22,5 22,5 22,5 N N P 69 {99} {6} {6} 86 {6} {23} {23} P P 2 28 {58} {56} {56} {56} , {74} {74} {56} R ,5 90 [30] 50, , {90} {50,5 {90} {50,5 {50,5 R S 38,5 46, , S S 2 2, ,5 U 4 {4} 5 [] {5} 6,5 {6,5} 5 [] {5} 6,5 {6,5} 2 6 6,5 {6,5} V 9 {9} 0,5 [9] 0,5 [9] V M6x8 (4) M8x0 (4) M8x6 (8) M8x0 (4) M8x6 (8) M8x6 (8) M0x8 M8x6 (8) M8x6 (8) M0x8 (8) M0x2 (8) V 3 M4 x 0 M4 x 0 M4 x 0 M6 x 5 M6 x 5 M6 x 5 M6 x 5 M8 x 20 M8 x 20 M8 x 20 M8 x 20 Y Z 6 {8} 0 [3] {0} 0 {0} 0 [3] {0} 0 {0} {0} Z 2 D* - Bores on request V - 90 for RT28 (*) - IEC7-B4 (FTA 7/.) Motor Dimensions: page 25 Not binding dimensions , ,5 67,5 42, , , ,5 5 4 M0x2 (8) M8 x

40 Dimensions Double worm gear boxes RT/RT B3 F, [FV], {FL} RT/RT

41 Double worm gear boxes RT/RT Gear boxes Series RS and RT Dimensions RT/RT 28/28 28/40 28/50 28/60 40/70 40/85 50/0 A A AA 97 2, AA 7 9, B B C ,5 C D (H7) D* (H7) D 2 (h6) F 80 0 {0} 25 [60] {25} 80 {80} F G (H8) {60} 70 [0] {70} 5 {5} G (h8) H ,5 H 57 7, ,5 H ,5 H I I K 79,5 8, ,5 43, K 57,5 57,5 57,5 57,5 70,5 70, * L M M 6,3 2,8 27,3 28,3 3,3 35,3 45,3 M 2 0,2 0,2 0,2 0,2 2,5 2,5 6 N N P {99} 93 [90,5] {23} 86 {6} 3 P P {58} 44 [4,5] {74} 25 {56} ,5 R {87} 90 [30] {90} 50,5 {50,5} R S 27,5 38,5 46, S S 2 2,5 2, ,5 S U 0 4 {4} 5 [] {5} 6,5 {6,5} V 7 9 {9} 0,5 [9] {9} {} V M6x0 (4) M6x8,5 (4) M8x0 (4) M8x6 (8) M8x6 (8) M0x8 (8) M0x2 (8) V 2 M4x0 M4x0 M4x0 M4x0 M4x0 M4x0 M6x5 Y Z 7 6 {8} 0 [3] {0} 0 {0} D* - Bores on request V - 90 forrt28 (*) - IEC7-B4 (FRS50) Motor Dimensions: page 25 Not binding dimensions - 4 -

42 Dimensions Accessories RT AS AD ASC Safety cap for AS BT BTV SL TLE VB TLI TLI Oil quantity Type / Litres

43 Accessories RT Dimensions RT AS & A AD B C C D 5 (g6) 4 9 (8) 24 (25) (35) 42 E L M N V 5 M5x0 M8x20 M8x20 M8x20 M8x20 M0x25 M0x25 ASC E L S BT & A BTV C F F F G I R S S SL L P S TLE D E E L L M TLI D (H7) D D x x x x x x x 38.5 L M 5.4* * N (H9) VB D L M M N V 8 M4x0 M4x0 M6x5 M8x20 M8x20 M8x20 M8x20 D 5 (..) = Diametre on request * = Undersized key Not binding dimensions

44 Dimensions One stage helical attachment XA XA D H7 G I J h8 L O Q U U T V W Z M M5x M M8x M M8x , ,5 0,5 2, M0 x 22 IEC S / L 00 2 H X / Y

45 Back-driving and Self-locking When back-driving a worm gear set using the worm wheel as input, the efficiency is lower than forwarddriving and, by varying the design data, back-drive efficiency can be reduced to zero obtaining a selflock-ing, or irreversible, gear set, When back-driving the worm gear, internal friction tends to lock the mesh, and the bigger the applied torque is, the more mesh friction increases proportionally augmenting the lockage at the same time. The most obvious example is during braking or slowing-down where the inertial load will try to backdrive the worm shaft, A worm gear is intended as a self-locking unit when the lead angle is less than the friction angle (arc tangent of friction coefficient), Tooth contact is dynamic even when the mesh velocity is zero, as vibrations in a non-rotating gear set can induce motion in the tooth contact, To provide a safety factor, a 3 lead angle is recommended for full self-locking condition, and 0 lead angle for poor self-locking condition, according to the table of relations between lead angles and selflock-ing. Lead angle Static self-locking β > 20 Full reversibility 0 < β < 20 High reversibility 5 < β < 0 3 < β < 5 Good reversibility Poor self-locking Poor reversibility Good self-locking < β < 3 Full self-locking

RS & RT WORM GEAR BOXES

RS & RT WORM GEAR BOXES Product description Multipurpose mounting Aluminium die cast and Cast iron (from size 0 up) Wormshafts ZI profile, Hardened and ground. Alloy steel. RS Input IEC and NEMA motor