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Torque multiplier for high tightening torques

Torque multiplier manufacturer

We are manufacturers of torque multipliers as standard tools or especially according to individual requirements. Since 1919 we have been developing tools for the most difficult operating conditions and supplying them to industrial companies all over the world.

All torque multipliers of the protected BOLTMAX g-power proprietary brand represent an optimum means of increasing efficiency by multiplying the torques produced by the user many times over with the aid of a planetary gearhead. The BOLTMAX series, consisting of the products Mx, Rx, Lx, and Hx, impress with their compact design, low weight and flexible use in any application.

Extremely long levers (leverage) are not used. The BOLTMAX torque multipliers are also convincing due to their high accuracy (±5%) and the gentle application for screw connections. BOLTMAX g-power torque multipliers should only be used with a torque wrench, not with impact or impulse wrenches! We naturally supply the appropriate wrench for each product.

In addition to our standard range, we also design and manufacture special torque multipliers according to individual customer requirements.
Backstop of the torque multiplier:

  • The backstop stores the torque built up. The elastic deformation in the gearbox and screw connection does not have to be overcome again with each ratchet stroke. The backstop prevents the operating tool from kicking back.
Torque multiplier overload protection:

  • To protect the gearboxes, the products are equipped with a torsion pin (predetermined breaking point) on the drive side (replacement pin included in the scope of delivery). Sheared off pins can be easily replaced by the user on site using the tools supplied.
Catalog Torque Multipliers
Planetary gear (1, 2 or multi-stage)
Overload protection
Bearings on the input and output side
Low wear
Surface chrome-plated / phosphated
Backstop (RS)

Torque multiplier - special design for special requirements

As a manufacturer of torque multipliers for industry, we have specialised and developed valuable know-how with the BOLTMAX series. Special torque multipliers are developed and produced at our Wuppertal site. Due to the high vertical range of manufacture, the torque multipliers can be manufactured according to individual customer requirements. The special torque multipliers are developed and designed either directly according to customer drawings or in close cooperation with the customer.

Your personal torque multiplier:

  • Tightening torques according to customer specifications

  • Dimensions specially adapted to the work task

  • Special output, special support and special gear ratio for special customer applications

  • Private label: logo and design can be individually determined

  • Quantity 1 to series production

  • Surface treatment: phosphated, burnished or chrome-plated

  • On request including tool certificate
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An extract from our range of torque multipliers

Below you will find an insight into our standard range of torque multipliers.
The complete product range as well as detailed article descriptions can be found in our catalogue.

Torque multiplier BOLTMAX g-power Mx

100 - 16000 Nm

Our manual torque multiplier Mx forms the core of the BOLTMAX g-power series. The device convinces primarily through its user-friendly design and the large measuring range. This makes the BOLTMAX g-power Mx the ideal companion for every bolting application and enables easy use in confined spaces. Thanks to the supports specially developed for the BOLTMAX g-power Mx, the device is versatile, as they are easy to change. All torque multipliers are supplied with an inclined support as standard or with a straight support on request. Depending on customer requirements, it is also possible to manufacture a special support. For optimum and flexible use, supports on the gear teeth can also be rotated through 360°. In order to be able to transport the unit safely to various locations, the BOLTMAX g-power Mx is supplied in a sturdy case with a moulded insert.

  • RS = Backstop
item numberNm-maxRSABCDWeight [g]
Mx8800nein651051321301300
Mx181800nein901501881323000
Mx282800ja952002401325200
Mx383800ja952002401325200
Mx505000ja1202152721507000
Mx808000ja13226834420011500
Mx12012000ja15627234820014000
Mx16016000ja21529237022526000
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Torque multiplier BOLTMAX g-power Rx

100 - 16000 Nm
Our torque multiplier BOLTMAX g-power Rx features flexible support options and is particularly suitable for work on standard flange and blind flange bolted connections. If there are no or insufficient positions for the support, the BOLTMAX g-power Rx allows support to be provided on the next possible bolt. To do this, the second insert is simply placed on the adjacent bolt, thus providing the necessary support. In order to transfer this possibility to the individual application, the support dimension can be flexibly adjusted. In the slotted hole of the BOLTMAX Rx, the support dimension can be adjusted as required. In addition, great importance was attached to a compact design when designing our torque multiplier, so that it can be used universally for as many applications as possible.
  • RS = Backstop
item numberNm-maxRSABT minT maxWeight [g]
Rx8800nein6585501251500
Rx181800nein90119902004400
Rx282800ja95170902006700
Rx383800ja95170902006700
Rx808000ja13224416027017000
Rx12012000ja15625819030023000
Rx16016000ja21527221035041000
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Torque multiplier BOLTMAX g-power Lx

100 - 3200 Nm
The assembly of screw elements and the use of appropriate tools pose great challenges in various areas, such as wind power or plant construction, above a certain height, as they must be light and especially secured. Our torque multiplier BOLTMAX g-power Lx meets the requirements for work at exceptional assembly heights and is therefore ideal for demanding bolting requirements at height. From a safety perspective, the main focus during development was on low weight and a compact design. In addition, the built-in towing eye is ideal for securing the tools. A small housing dimension and the lateral tube support ensure maximum user-friendliness. A high reduction ratio also allows the use of a short torque wrench, as bulky tools in high working areas should be avoided.
  • RS = Backstop
item numberNm-maxRSABCDWeight [g]
Lx101000ja75120402023200
Lx161600ja75124402023300
Lx323200ja88135402245300
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Torque multiplier BOLTMAX g-power Hx

150 - 17000 Nm
Our torque multiplier Hx is the single-stage entry-level model of the BOLTMAX g-power series and is suitable for any uncomplicated bolting application where more force is required. In combination with the compact design and force multiplication, the BOLTMAX g-power Hx convinces our customers in a wide range of industrial sectors through its use in the most diverse applications. Another special feature of the Hx product range is its low overall height. In addition, depending on customer requirements, the unit is supported either with a support rod, a support tube or a special support.

milled housing

item numberNm-maxABDWeight [g]
Hx14140090985254900
Hx14s1400901065254900
Hx303000951146007500
Hx5555001201406609800
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Housing forged

item numberNm-maxABDWeight [g]
Hx75135089844604900
Hx86175089924604900
Hx1002750951115557500
Hx15055001321576079800
Hx2001100016519568521000
Hx2501700021618483533000
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Hahnerberger Str. 82 42349 Wuppertal Germany
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Carl Walter Produktions GmbH & Co. KG
Hahnerberger Str. 82 42349 Wuppertal Germany
+49 (0) 20 2 / 40 924 - 0