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Hydraulic tools for torques up to 100.000 Nm

Hydraulic tools manufacturer

We are a manufacturer of hydraulic tools 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.

CARL WALTER hydraulic tools cover high torque ranges (up to 100.000 Nm) and have a very high accuracy, which is up to + / - 3%.

All hydraulic tools have been specially developed for cramped conditions and are therefore characterised by small head radii and an extremely compact design. The optimum ratio of weight and torque was designed and calculated using the latest methods (CAD/FEM). CARL WALTER hydraulic tools are therefore extremely light and user-friendly.

The comprehensive range of accessories for our hydraulic tools ranges from exchangeable cassettes (square cassettes, ring spanner cassettes) to inserts with direct serration and special supports integrated into the system.

The hydraulic tools of CARL WALTER include, among others, the tools of the protected own brand BOLTMAX, which includes the following product types:

  • BOLTMAX compact - Compact screwdriver for interchangeable cassettes
  • BOLTMAX classic - Square screwdrivers with proven technology
  • BOLTMAX xt - Mounting system for plate heat exchangers
  • BOLTMAX tension - Hydraulic bolt elongation
  • BOLTMAX custom - Special production according to customer requirements.

Due to high torques, use only with power inserts! Of course, we supply special power inserts according to customer specifications (e.g. power or space requirements).

In addition to our standard range, we also design and manufacture special hydraulic tools according to individual customer requirements.
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Hydraulic tools - development and special design according to customer requirements

As a manufacturer of hydraulic tools, we have a high vertical range of manufacture in addition to our know-how. The development of hydraulic tools specially adapted to individual customer requirements is therefore one of our core competences. All individual hydraulic tools are developed and designed by our design department in close cooperation with the customer.

  • Torque ranges matched to customer requirements

  • Individually defined dimensions

  • Special inserts, special supports and special cassettes for the corresponding application of the customer

  • Batch size 1 to series production

  • Optional with factory certificate
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An excerpt from our range of hydraulic tools

In the following you will get an insight into our standard range of hydraulic tools.
The complete product range as well as detailed article descriptions can be found in our catalogue.

The compact - hydraulic wrench BOLTMAX compact

200 - 38500 Nm
Our hydraulic tools of the BOLTMAX compact series are particularly characterised by their compact design and small head radii, which enables universal use. In addition, they consist of few individual parts, which means that they require little maintenance. Thanks to the flexible support, the BOLTMAX compact series can also be used individually. Corresponding inserts with direct serration and ring spanner cassettes can be found in our range.

The RSLSDS tool kit from the BOLTMAX family consists of:

  • Basic tool BOLTMAX compact RS
  • BOLTMAX compact S square cassette
  • Support BOLTMAX compact RSLA
  • Delivery without swivel coupling

item numberNm maxP-maxOutputLBHRKWeight [g]
RSL2SDS193770020 (3/4“)1601146523,93000
RSL4SDS423770025 (1“)1961428031,84900
RSL6SDS732570040 (1 1/2“)23516410038,68000
RSL8SDS1081370040 (1 1/2“)27916911538,69900
RSL14SDS1534270040 (1 1/2“)28620212547,813300
RSL20SDS2682170040 (2 1/2“)33624116063,522100
RSL30SDS3851670040 (2 1/2“)38526316563,526400
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Hydraulic pumps and accessories

700 bar
The electro-hydraulic pump HE:

  • Three stage axial piston pump
  • E-motor
  • 2800 min-1
  • Adjustable pressure relief valve
  • Pressure gauge Ø 100 mm
  • Incl. clutches, oil filling and remote control (5m)

Air-hydraulic pump BMPL:

  • Two-stage axial piston pump
  • Air motor, 1,1KW (operating pressure 5 - 10 bar - 16 l/sec)
  • P3000 min-1
  • Adjustable pressure relief valve
  • Pressure gauge Ø 100 mm
  • Including maintenance unit, couplings, oil filling and
  • Remote control (5m)

Hand hydraulic pump BMPH:

  • Two stage hand pump
  • Pressure gauge 100 mm
  • Including clutches and oil filling

Hydraulic hose HD:

  • Oil filled and vented
  • Including HD couplings
  • With bend protection
item numberCapacityTank [L]LBHV
Weight [g]
HE025
1) 75 bar: 3,2 l
2) 200 bar: 0,9 l
3) 700 bar: 0,4 l
2,536023040023015000
HE055
1) 75 bar: 6,5 l
2) 200 bar: 1,8 l
3) 700 bar: 0,7 l
4,040028040023025000
HE110
1) 75 bar: 8,5 l
2) 200 bar: 3,4 l
3) 700 bar: 1,3 l
4,046030044040030000
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item numberCapacityTank [L]LBHWeight [g]
BMPL32
1) 70 bar: 5,5 l
2) 700 bar: 0,5 l
6,536041045022000
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item numberLWeight [g]
HD220001000
HD330001400
HD550001800
HD10100003100
HD20200005800
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Hydraulic bolt tensioner BOLTMAX tension

136-2.615 kN / 1000 bar
The BOLTMAX tension is suitable for controlled pre-tensioning of bolts with hydraulic support. Our hydraulic tools of the BOLTMAX tension series are particularly impressive due to their high accuracy, which is particularly important when hydraulically pretensioning bolted joints. In addition, the BOLTMAX tension allows quick application, which increases labour productivity. Thanks to its easy handling, the BOLTMAX tension can be used in a wide range of applications, such as flange bolting.

  • great accuracy
  • easy use
  • safe application
  • High efficiency and flexibility
  • changeable tie nuts
  • interchangeable spanner widths
  • interchangeable support sleeves

The thread projection must be at least equal to the bolt diameter (nut height = bolt diameter)

item numberThreadFp [kN]AØ [mm]B [mm]D [mm]Weight [g]
02BMT16M1613673,523,51601450
02BMT18M1813673,523,51601450
02BMT20M2013673,526,51601480
02BMT22M2213673,526,51601480
01BMT24M2422886,029,51802310
01BMT27M2722886,032,01852340
1BMT30M30348107,036,01973460
1BMT33M33348107,036,01973460
2BMT33M33428117,036,01993930
2BMT36M36428117,039,02023890
1BMT36M36348107,039,02003420
2BMT39M39428117,042,02134400
3BMT39M39591136,042,02125360
3BMT42M42591136,045,02145700
4BMT42M42788150,045,02166900
3BMT45M45591136,049,02175800
4BMT45M45788150,049,02197000
4BMT48M48788150,051,02227200
5BMT52M48989169,051,02228050
4BMT52M52788150,054,02257500
5BMT52M52989169,054,02258350
5BMT56M56989169,059,02319120
6BMT56M561274190,059,024110670
6BMT60M601274190,065,024811270
6BMT64M641274190,065,024811270
7BMT64M641594208,065,025212670
7BMT68M681594208,071,025814150
7BMT72M721594208,071,025814150
8BMT72M721832222,071,025815550
8BMT76M761832222,077,026517800
9BMT76M762178239,077,026720800
9BMT80M802178239,077,027420800
9BMT85M852178239,087,027422600
9BMT90M902178239,093,028122100
10BMT95M952615276,099,029650000
10BMT100M1002615276,0100,030254000
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Hydraulic nuts BOLTMAX HN

217-2080 kN / 1400 bar
The hydraulic nuts of the BOLTMAX tension HN series are particularly suitable for bolted connections that require high forces (e.g. bearing blocks). Hydraulic nuts are also frequently used to pre-tension bolts that are difficult to access.

A high degree of accuracy ensures the correct pre-tensioning force and even load. The
simple application of BOLTMAX tension HN hydraulic nuts also ensures fast assembly and disassembly times.

  • fast, accurate and reliable
  • problem-free retightening
  • simple application
  • preload force is secured by union nuts
  • lateral couplings are possible
item numberThreadFp [kN]AØ [mm]C [mm]Hub max. [mm]Weight [g]
BMHN1 / 16M16217746642080
BMHN1 / 18M18217746642080
BMHN1 / 20M20217746642080
BMHN1 / 22M22217746642080
BMHN1 / 24M24217746642080
BMHN1 / 27M27217746642080
BMHN1 / 30M30217746642080
BMHN2 / 30M30350956643250
BMHN2 / 33M33350956643250
BMHN2 / 36M36350956643250
BMHN2 / 39M39350956643250
BMHN3 / 42M424401087444420
BMHN3 / 45M454401087444420
BMHN3 / 48M484401087444420
BMHN3 / 52M524401087444420
BMHN4 / 56M565521187845130
BMHN5 / 60M606171288456390
BMHN5 / 64M646171288456390
BMHN6 / 68M687771408867980
BMHN7 / 72M72103916292611580
BMHN7 / 76M76103916292611580
BMHN7 / 80M80103916292611580
BMHN8 / 80M801462185112818910
BMHN8 / 90M901462185112818910
BMHN9 / 90M901625202122823850
BMHN9 / 100M1001625202122823850
BMHN10 / 100M10020802181371031400
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Assembly and disassembly system for BOLTMAX xt plate heat exchangers

300 kN
Our assembly and disassembly system for BOLTMAX xt plate heat exchangers achieves a high working speed (approx. 10 min to disassemble a cooler with M39 spindles). Only one operator is required for this hydraulic tool, thus enabling a very efficient working method.

Furthermore, the precise force control (pressure gauge/pressure relief valve) ensures high precision and the various exchangeable components ensure great flexibility. Due to the high safety standards a safe working in hazardous areas (with air hydraulic pump) is possible. In addition, safe working is supported by the fact that the threaded rods are not pressed out. The assembly and disassembly system is also characterised by its compact design and low-maintenance use (no highly loaded gear wheels). A thrust bearing is not required.

The basic BMXTBS system consists of the following five components as standard:

  • Cylinder
  • Housing
  • 5 m hose
  • Winding device
  • Ratchet.

The system is supplemented by a socket, a split nut and a sw-adapter.
item numberF
BMXTBS300KN
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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