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bevel gearbox / for valve actuators / motorized / multi-turn
bevel gearbox
IB range

Torque: 0 Nm - 10846 Nm

Complete range of heavy duty cast iron multi-turn bevel gearboxes suited for the most demanding motorised applications for cast and fabricated sluice gates, gate valves and globe and pinch valves.

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Rotork plc
worm gearbox / for valve actuators / motorized / quarter-turn
worm gearbox
IW range

Torque: 250000 Nm - 850000 Nm

Complete range of heavy duty cast and ductile iron quarter-turn worm gearboxes suited for plug, ball and butterfly valves serving the water, gas, chemical, power, and general industrial applications.

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Rotork plc
bevel gearbox
bevel gearbox
HOB/MPR range

Torque: 0 Nm - 8018 Nm

Cost effectively designed commodity hand operated bevel gears suited for sluice gates, gate, and globe valves.

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Rotork plc
spur gearbox / for valve actuators / manual / multi-turn
spur gearbox
IS range

Torque: 0 Nm - 46100 Nm

Complete range of heavy duty cast iron multi-turn spur gearboxes suited for the most demanding manual and motorised applications where the gearbox input shaft needs to be parallel with the valve stem ...

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Rotork plc
worm gearbox / for valve actuators / quarter-turn
worm gearbox
AB/242 range

Torque: 0 Nm - 32000 Nm

... range of quarter-turn operators are heavy duty cast iron gearboxes suited for ball, plug and butterfly valves. The 242 range of quarter-turn operators are robust and light weight cast iron gearboxes ...

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Rotork plc
planetary gearhead
planetary gearhead

Torque: 0 Nm - 32 Nm

Gearheads FAULHABER developes high performance modular gearheads to complement each of its motor technologies. From high torque planetary technology in a variety materials, to zero backlash spur gears, ...

planetary gear reducer / coaxial / precision
planetary gear reducer
1.32 - 20.000 Mint.(mNm), 3.33 - 23 014 :1

Torque: 0 Nm - 32 Nm

Planetary Gearheads Their robust construction make the planetary gearheads, in combination with FAULHABER DC-Micromotors, ideal for high torque, high performance applications. For applications requiring medium to ...

spur pinion gear reducer / coaxial
spur pinion gear reducer
15 - 100 Mcont.(mNm), 3.1 - 983.447 :1

Torque: 0.01 Nm - 0.4 Nm

Spur Gearheads A wide range of high quality spur gearheads are available to compliment FAULHABER DC-Micromotors. The all metal or plastic input-stage geartrain assures extremely quiet running. Features ...

spur pinion gear reducer / right-angle / zero-backlash
spur pinion gear reducer
15 - 100 Mcont.(mNm), 69.2 - 2 050 :1

Torque: 0.01 Nm - 0.4 Nm

... backlash. The backlash is reduced to a minimum by counter-rotating the two individual gear passes to each other and locking them in place on the motor pinion gear. Features and benefits Available ...

planetary gear reducer / coaxial / precision
planetary gear reducer
GP 4 series

Torque: 0 Nm - 0.02 Nm

Precision spur- and planetary gearheads matched to maxon motors. Gears are advantageously adapted directly to the desired motors in the delivery plant. The motor pinion is the input gearweel for the ...

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maxon motor
planetary gear reducer / coaxial / single-stage / three-stage
planetary gear reducer
GPX 8 series

Torque: 0.01 Nm - 0.1 Nm

maxon GPX gearheads combine extremely high power transmission with a very short construction. High torques and speeds, low noise and backlash… the maxon GPX 08 has virtually every quality that could be required of a ...

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maxon motor
planetary gear reducer / coaxial / single-stage / three-stage
planetary gear reducer
GPX 12 series

Torque: 0.08 Nm - 0.17 Nm

maxon GPX gearheads combine extremely high power transmission with a very short construction. The modular design provides the basis for a customer-specific solution. The use of metal components makes a wide range of ...

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maxon motor
planetary gear reducer / coaxial / single-stage / three-stage
planetary gear reducer
GPX 12 C series

Torque: 0.11 Nm - 0.23 Nm

maxon GPX gearheads combine extremely high power transmission with a very short construction. The modular design provides the basis for a customer-specific solution. The gearhead's ceramic components make it suitable ...

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maxon motor
planetary gear reducer / coaxial / three-stage / modular
planetary gear reducer
GPX 12 LN series

Torque: 0.06 Nm - 0.11 Nm

maxon GPX gearheads combine extremely high power transmission with a very short construction. The modular design provides the basis for a customer-specific solution. Plastic planet gears enable use in ...

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maxon motor
planetary gear reducer / right-angle
planetary gear reducer
FLENDER PLANUREX® 3 series

Torque: 1700000 Nm - 5450000 Nm

... planetary gear units that have extremely high power capacity, can be used in a wide range of applications and are setting new benchmarks in terms of quality, flexibility and ease of use. PLANUREX 3 offers a complete, ...

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Siemens AG - PD - Mechanical Drives
helical gear reducer / planetary
helical gear reducer
Jack-up Rigs

Torque: 1185000 Nm
Power: 90 kW

... rig is raised and lowered by in average 54 helical planetary gear units driving pinions on racks. A high transmission ratio in excess of 7,000 and high torque are characteristic of FLENDER gear units. The ...

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Siemens AG - PD - Mechanical Drives
gear reducer for mining applications / dual-stage
gear reducer for mining applications
P2MT 240

Torque: 1050000 Nm
Power: 2000 kW

Mining companies lose time and money. We are changing that. Operating costs, energy requirements, safe and reliable operation, and productivity are the decisive factors for the success of a mine. Our promise: with FLENDER® drives you ...

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Siemens AG - PD - Mechanical Drives
shaft-mounted gear reducer / for Yankee dryers / for the paper industry / three-stage
shaft-mounted gear reducer
GHZP, GHDP

Torque: 14000 Nm - 100000 Nm

... cylinders, the gear unit is attached to the cylinder pin as a shaft-mounted gear unit. As with the drying cylinders, steam is led through this cylinder pin into the M.G. cylinder. Just as throughout ...

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Siemens AG - PD - Mechanical Drives
gearbox for marine applications / multiple-input
gearbox for marine applications
GVLQ, GVA , GVL, GVLS

Power: 10000 kW - 50000 kW

Multiple input/single output marine gearboxes direct the output of several diesel engines or electric motors to a propeller. Here, different drive concepts can be implemented. Via clutches, the gearboxes ...

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Siemens AG - PD - Mechanical Drives
shaft-mounted gearbox / helical
shaft-mounted gearbox
6.3:1 - 710:1 | RN series

Torque: 180 Nm - 2360 Nm
Power: 0.22 kW - 22 kW

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VARVEL
bevel gearbox / helical / right-angle
bevel gearbox
6.3:1 315:1 | RO series

Torque: 180 Nm - 3360 Nm
Power: 0.22 kW - 22 kW

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VARVEL
bevel gearbox / right-angle
bevel gearbox
6.3:1 - 315:1 | RV series

Torque: 180 Nm - 3400 Nm
Power: 0.18 kW - 22 kW

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VARVEL
worm gearbox / right-angle
worm gearbox
4205:1 - 10 000:1 | RS/RS series

Torque: 260 Nm - 3020 Nm
Power: 0.18 kW - 3 kW

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VARVEL
double worm gearbox / right-angle
double worm gearbox
25:1 - 800:1 | RA series

Torque: 280 Nm - 2860 Nm
Power: 0.18 kW - 4 kW

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VARVEL
bevel gear reducer / right-angle / precision
bevel gear reducer
SC+, SPC+, TPC+

Torque: 315 Nm - 1600 Nm
Rotational speed: 6000 rpm

The right-angle gearhead portfolio is rounded off at low ratios by the powerful bevel gearhead family. The gearheads are available with output shaft and output flange and are positioned ...

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WITTENSTEIN AG
planetary gear reducer / coaxial / low-backlash
planetary gear reducer
alpheno®

Torque: 35 Nm - 3360 Nm
Rotational speed: 6000 rpm

Wittenstein’s Alpheno® is a planetary gearhead unit designed and manufactured to be the "next step in planetary gearhead operating efficiency". This high-quality planetary gearhead unit ...

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WITTENSTEIN AG
planetary gear reducer / coaxial / high-performance / low-backlash
planetary gear reducer
RP+

Torque: 540 Nm - 10000 Nm
Rotational speed: 5000 rpm

New Rp+ is a high-performance planetary gearhead that sets standards with respect to power thickness, modularity and easy installation. Rp+ series inherits all the profits of its WITTENSTEIN alpha gearhead ...

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WITTENSTEIN AG
planetary gear reducer / coaxial / low-backlash
planetary gear reducer
SP+ series

Torque: 30 Nm - 4500 Nm
Rotational speed: 6000 rpm

The iconic all-rounder planetary gearheads from Wittenstein is perfect for high positioning precision and dynamic cyclic application (DC ≤ 60%). The basic SP+/SP+HIGH SPEED is capable of reverse and continuous operation ...

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WITTENSTEIN AG
planetary gear reducer / coaxial / low-backlash / high-torque
planetary gear reducer
TP+ series

Torque: 32 Nm - 40000 Nm
Rotational speed: 6000 rpm

The TP+/TP+ HIGH TORQUE is a sleek gearhead that was manufactured by Wittenstein. The TP+/TP+ HIGH TORQUE boasts the most excellent performance among all other gearheads that have output flange. It offers ...

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WITTENSTEIN AG
gear reducer with extended center distance / parallel-shaft
gear reducer with extended center distance
i= 500:1 | POSIRED N

Torque: 0 Nm - 500000 Nm

Lifting gears in which the cable drum and driving motor are arranged in parallel require a step-down gear with a correspondingly large axle base. The lifting gear gears ...

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Brevini Riduttori
dual-shaft gear reducer
dual-shaft gear reducer
i= 5:1 - 140:1 | POSIRED TS

Torque: 1000 Nm - 110000 Nm

... of application for these gearboxes are rolling mills, profiling plants, crushers, double-shaft mixers, kneaders, compactors and presses. These systems require two contra-rotating drives, such as is provided by the Posired ...

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Brevini Riduttori
coaxial gear reducer / custom
coaxial gear reducer

... exist for e. g.: different shifting gears, rack and pinion drives, extruder drives, distributor-mechanisms for needle-felting machines, gear boxes for pump-distributing devices, hoisting gears ...

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Brevini Riduttori
planetary gear reducer / with hollow shaft / high-torque
planetary gear reducer
S series

Torque: 34000 Nm - 2500000 Nm

Brevini "S Series" gear units are the ideal choice for applications, either fixed industrial or self-propelled machines, in need of high torque and minimum dimensions. In comparison to conventional gear ...

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Brevini Riduttori
planetary gear reducer / high-torque / industrial
planetary gear reducer

Torque: 51000 Nm
Rotational speed: 1200 rpm - 2000 rpm

... manufacturing large precision gears for any industrial application. Brevini Gear Systems facility is able to manufacture and heat treat large-diameter, high-precision gearing. We have ...

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Brevini Riduttori
helical gear reducer / parallel-shaft / precision / compact
helical gear reducer
0.25 - 55 kW, max. 13 000 Nm | Poulibloc 2000-3000 series

Torque: 820 Nm - 3000 Nm

Poulibloc are helical geared motors that feature parallel output and are suitable for normal environments. They exemplify dual lipseals on treated ground surface and boast the precision and rigidity of ribbed cast iron ...

helical gear reducer / with hollow shaft / explosion-proof
helical gear reducer
3:1 - 25:1, 100 - 10 000 Nm | Poulibloc - ATEX zone 21

Torque: 100 Nm - 10000 Nm

These hollow shaft geared motors with taper bush are designed to operate in potentially explosive dust atmospheres (ATEX zone 21 certified). These geared motors use a shaft mounting that is adaptable ...

helical gear reducer / with hollow shaft / explosion-proof
helical gear reducer
3:1 - 25:1, 100 - 10 000 Nm | Poulibloc - ATEX zone 22

Torque: 100 Nm - 10000 Nm

... ATEX zone 22 is designed specifically for use in environments with potentially explosive dust. The model is a hollow shaft geared motor with a tapered bush system, that may be mounted in various areas. Its ribbed cast ...

spur pinion gear reducer / right-angle
spur pinion gear reducer
20 - 700 N

Power: 6 W - 40 W

... parallel shaft gears are primarily standard gearheads which are utilized for asynchronous motors. These gearheads are able to integrate with the motors, and permit the motor to be set ...

right-angle gear reducer / for asynchronous motors
right-angle gear reducer
100 - 700 N

Power: 25 W - 90 W

... Series has standard-type 1:3-1:200 gear ratios with maximum permissible torque of up to 40Nm. On the contrary, it has right angle-type 1:3-1:150 gear ratios and maximum permissible torque of up to 20Nm. ...

helical gear reducer / parallel-shaft / precision / industrial
helical gear reducer
5.54:1 - 1600:1

Torque: 25000 Nm - 242000 Nm
Power: 2.2 kW - 1000 kW

In accordance to the well-tested unicase housing principle, the NORD industrial gear units have been improved in which the unicase is carried out from a unique jig and the futuristic machines. It offers high amount of ...

helical gear reducer / worm / right-angle / robust
helical gear reducer
4.4:1 - 7095.12:1 | UNICASE

Torque: 94 Nm - 3058 Nm
Power: 0.12 kW - 15 kW

The right-angle worm gear reducer integrates all bearing seats into a single-piece casting. It eliminates all sealing surfaces that could deflect under the effect of radial forces. The device has a durable ...

worm gear reducer / right-angle / universal / aluminum
worm gear reducer
5:1 - 3000:1 | UNIVERSAL SI

Torque: 21 Nm - 427 Nm
Power: 0.12 kW - 4 kW

... features, the Universal SI and MI worm gear by NORD DRIVESYSTEMS offers a high power density and the transferral of torque silently. These worm gears which are available in SI and ...

helical gear reducer / coaxial / modular
helical gear reducer
C series

Torque: 45 Nm - 12000 Nm
Power: 0.08 kW - 213 kW

The Bonfiglioli C - Helical Gear series is a range of motors that provide efficient productivity to its users. The C series is well known to be the unmatched range of helical gearmotors and speed reducers ...

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Bonfiglioli
shaft-mounted gear reducer / parallel shaft
shaft-mounted gear reducer
F series

Torque: 140 Nm - 14000 Nm
Power: 0.17 kW - 125 kW

The F Series features a mounted gear motor built in a rugged, easy-to-install construction. This lightweight motor unit operates with a range of 140 Nm to 14,000 Nm torque with a mechanical rating from 0.17 to 125 kW. ...

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Bonfiglioli
helical gear reducer / parallel shaft / industrial
helical gear reducer
HDP series

Torque: 4650 Nm - 194000 Nm
Power: 7.1 kW - 500 kW

... parallel shaft gearbox category, the HDP - Parallel shaft gearbox already includes fan cooling, cooling coil and heaters with an independent cooling system with non-contacting seals and forced lubrication. ...

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Bonfiglioli
helical gear reducer / parallel shaft / single reduction
helical gear reducer
S series

Torque: 21 Nm - 200 Nm
Power: 0.12 kW - 11.6 kW

The S series of single-reduction helical gear motors feature a simple design with high output, and is designed for pump the industry and also for fan and blower applications. These motors are available in 21-200Nm ratings, ...

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Bonfiglioli
shaft-mounted gear reducer / parallel shaft
shaft-mounted gear reducer
TA series

Torque: 150 Nm - 16000 Nm
Power: 1.1 kW - 156 kW

The Bonfiglioli TA series is a shaft mounted reducer used in material handling industries such as quarrying and mining. This reducer has an optimum dependability and low maintenance as its key elements. ...

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Bonfiglioli
tandem gear reducer / parallel shaft / heavy-duty
tandem gear reducer
Transfer Cases (Truck)

Torque: 5600 Nm - 22000 Nm
Power: 230 kW - 500 kW

Efficiency is standard equipment MAN components unite innovative technology and outstanding quality for a degree of economy that’s worth it – for both you and your customers. Profit from our comprehensive program of first-class front ...

planetary gear reducer / coaxial / industrial / compact
planetary gear reducer
RE series

Torque: 1000 Nm - 2500000 Nm

... including: mobile, drilling, marine, mining and industrial. Wide availability of customized solutions makes this range of gearboxes adaptable to any kind of application where a compact and reliable mechanical transmission is needed.

planetary gear reducer / industrial / compact
planetary gear reducer
GB series

Torque: 1000 Nm - 2500000 Nm

... including: mobile, drilling, marine, mining and industrial. Wide availability of customized solutions makes this range of gearboxes adaptable to any kind of application where a compact and reliable mechanical transmission is needed.

coaxial gear reducer / high radial load / compact
coaxial gear reducer
RE series

Torque: 3000 Nm - 2000000 Nm

... .000 Nm to 160.000 Nm nominal torque, however special solutions are available for torque values up to 2.000.000 Nm. The gearboxes have a compact design and a strong output support suitable for applications with high ...

planetary gear reducer / coaxial / winch
planetary gear reducer
RW, WD series

Torque: 5000 Nm - 400000 Nm
Rotational speed: 2500 rpm - 5200 rpm

... Nm to 400.000 Nm nominal torque. It comprises rotating case gearboxes designed to fit inside the winch drum. In order to ensure an isostatic distribution of the load on the winch, the gearbox is designed ...

harmonic gearhead / zero-backlash / high-load-capacity / flange-mounted
harmonic gearhead
HG series

Manufactured by Nexen, the harmonic gearheads feature a true zero backlash, high reduction ratios of 50/80/100/120:1, and a high load capacity. Designed with an advanced technology of diagonal roller ...

right-angle gear reducer / custom
right-angle gear reducer

... manufacturing, assembling and testing of new gearboxes along with overhaul and repair transmissions in service. It undertakes the manufacturing of master gears and curvic couplings along with single ...

parallel shaft gear reducer / for pumps
parallel shaft gear reducer

Torque: 780 Nm - 2712 Nm
Power: 135 kW - 950 kW

... room for doubt at all. With their modular design, the company is able to deliver more than 5,000 configurations of torque, gear ratios, horsepower, hydraulic pump adapters, mounting options, and more options with their ...

planetary gear reducer / coaxial / winch / for vehicles
planetary gear reducer

Torque: 8135 Nm - 162696 Nm
Rotational speed: 2800 rpm - 4000 rpm
Power: 27 kW - 168 kW

... ratios of input gear deduction sets which are associated with the merging of the center section planetary gears allowing the reducer, swing and track drive applications be accommodated ...

helical gear reducer / right-angle
helical gear reducer

Torque: 16584 Nm - 85089 Nm
Rotational speed: 950 rpm - 1750 rpm
Power: 2.2 kW - 895 kW

Both parallel shaft and standard right-angle types are available for this high-powered, compact product. It features a modular housing, which can be used with any mounting position. The housing comes with reinforcement ribs and is therefore ...

helical gear reducer / parallel-shaft
helical gear reducer
308.7 - 33 600 Nm | SMR Series

The SMR helical reducer provides customers with great space, energy, and time-saving features. This type of helical reducer delivers high transmission and drive and has a hollow output shaft that can ...

worm gear reducer / right-angle
worm gear reducer
Worm Power Drive, Troi Drive

Torque: 8 Nm - 47000 Nm

Tsubaki worm gear reducers provide several options, ranging from small to large sizes, suitable for a variety of applications. The worm are available in two types: Troi Drive, the ...

bevel gear reducer / right-angle
bevel gear reducer

Power: 0.01 kW - 335 kW

... also offers users a wide variation as the Miter Gear Box and ARA Gear Box come in an extensive assortment of standard and semi-standard models. A vast array of unique product specifications are met by ...

planetary gear reducer / coaxial / for harsh environments
planetary gear reducer
AquaTRUE™

Torque: 876 Nm

... AquaTRUE™ Gearhead. It is designed with a 304 stainless steel housing that reduces opportunities for rusting and corroding, and without outer joints for bacteria to stay. This gearhead is built with ...

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Thomson Industries, Inc.
planetary gear reducer / coaxial / precision
planetary gear reducer
XTRUE™

Torque: 876 Nm

The XTRUE™ Series is a recently released precision gearhead, which is a compliment to the Micron® True Planetary™ Gearheads line. Featuring superior load capacity, as well as a flexible mounting system, simple to drop-in ...

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Thomson Industries, Inc.
planetary gear reducer / coaxial
planetary gear reducer
ValueTRUE™

Torque: 2800 Nm - 2969 Nm

... storage space, reduced backlash, and has low noise, hassle-free function compared to the non-helical ones. True Planetary® gearhead has a very handy 3 mounting steps which are align, mount and tighten ...

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Thomson Industries, Inc.
planetary gear reducer / coaxial
planetary gear reducer
UltraTRUE™

Torque: 3111 Nm - 3300 Nm

UltraTRUE™ is a true planetary gearhead that blends the positive elements of Helical Crowned gearing with True Planetary orientation to produce smooth and quiet gearheads on today's ...

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Thomson Industries, Inc.
planetary gear reducer / coaxial / low-backlash / for continuous operation
planetary gear reducer
EverTrue™

Torque: 1017 Nm

The EverTrue True Planetary® from THOMSON is a gear head that is highly durable and highly reliable with optimized performance. Its robust, special design is capable of running more than 30,000 hours in an everyday application ...

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Thomson Industries, Inc.
two-stage gear reducer / straight-toothed / custom
two-stage gear reducer

Torque: 13000 Nm
Rotational speed: 12 rpm - 36 rpm

... required a special reducer, capable of operating in a critical environment with extreme temperatures: Unimec’s R&D department worked together with the customer’s Technical Department and developed a brand new, 3-ton, ...

planetary gear reducer / coaxial
planetary gear reducer
R 35Q Nema 17 Nema 23

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BERNIO ELETTROMECCANICA
planetary gearbox / three-stage / single-stage / dual-stage
planetary gearbox
RHP 52 NEMA 23

Torque: 0.7 Nm - 16 Nm
Rotational speed: 5000 rpm

Standard motor output dimension Motor shaft Ø 6,35x20. Permanent greasing. Normaly the gearboxes are shiped in the standard dimenson like the drow. Is possible to have different meccanical dimension accordin ...

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BERNIO ELETTROMECCANICA
planetary gear reducer / coaxial
planetary gear reducer
R 30Q NEMA 17

Torque: 1.5 Nm - 15 Nm
Rotational speed: 3000 rpm - 5000 rpm

... epicicloidal reduction gearbox manufactured by Bernio. This instrument comes with a galvanized steel frame and delrin, with hardened steel gear. The output shaft of the device is ...

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BERNIO ELETTROMECCANICA
planetary gear reducer / coaxial
planetary gear reducer
R 45 NEMA 23

Torque: 2.5 Nm - 50 Nm
Rotational speed: 3000 rpm - 5000 rpm

Epicycloid reduction gearbox comes with a galvanized steel frame, sintered steel and hardened steel gear, with output shaft supported by two ball bearings. The maximum speed at the ...

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BERNIO ELETTROMECCANICA
planetary gear reducer / coaxial
planetary gear reducer
R 63 NEMA 23

Torque: 5 Nm - 120 Nm
Rotational speed: 3000 rpm - 4000 rpm

The R 63 Model is a planetary gear reducer developed by Bernio Elettromeccancia. It comes with a sterized steel frame, and 400 N axial and 500 N radial on the limit of output shaft. The unit comes with an output ...

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BERNIO ELETTROMECCANICA

How to choose this product

gear-reducer

A gear reducer is a gearing assembly that can reduce rotational speed while increasing torque in a mechanical system, or increase speed while reducing torque (in which case it is called a multiplier).

Applications

These devices are extremely common in a wide range of mechanical transmission applications, including automobile and motorcycle transmissions, in machine tools, variable speed drives and gear motors.

Technologies

There are four basic types of gear reducer:
- Straight (or straight sprocket, with straight-cut or cylindrical teeth)
- Worm gear (worm and wheel), with straight or helical teeth
- Bevel gear, with straight or helical teeth
- Planetary (epicyclic) gear

The term helical refers to tooth profile. Helical teeth can be found on any gear type. Note that in a rotating mechanism, speed and torque are inversely proportional.

How to choose

Choice of gear reducer will depend on the speed and torque of both the input and output shafts. These data can be used to calculate the reduction ratio. Another factor is the relative orientation of the input and output shafts: coaxial, parallel, perpendicular, convergent or not.

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