Hägglunds Compact range is being extended with yet another new product. The CB1120 is the motor that will replace the Marathon MB1150. “We’ll be releasing the CB1120 to sales companies before summer and plan to make the first deliveries in autumn,” says Lars Andrn, project manager.
THE COMPACT CA AND CB motors have been very successful since the CA was launched in the mid-1990s. The CB motor, which came out in 2002, replaced the smaller Marathon motors rated at up to 800 Nm/bar, with excellent results, and this spurred on R&D to develop replacements for the remaining, larger Marathon motors, known within the company as Magnum.
It was this CBM study that led to the development of the CB1120. “During the study we realised we already now could take a step to this new motor. The existing CB range went as high as the CB840, and we saw that it was possible to extend it to the CB1120 and use this to replace our smallest Magnum motor, the MB1150,” says Lars Andrn.
Careful tests
So far the new motor has been tested for more than 2,900 hours in Hägglunds’ laboratory, with excellent results. The motor is based on proven technology, but because it is produced in a larger capacity there are additional piston forces acting on components such as the connection block. This has therefore been strengthened and a new casting developed to cope with the higher loads the motor is subjected to.
The number of components has been reduced considerably compared with the MB1150, in line with Hägglunds’ commitment to modular motor construction.
Separate adapter
Besides the advantages of lower weight and smaller diameter, the new motor is also more versatile, since it can be built with smaller steps in torque capacity. “With the old range of motors there were only two choices of torque – 975 and 1150 – but now we can offer seven torque levels. This is a big advantage as it makes it easier to adapt the motor to the customer’s requirements and optimise our pump unit.”
The CB1120 will only be produced with a splined output, but will also be available with a separate adapter so that the motor can be used in applications where a shaft coupling is required. “The splined output is becoming increasingly common, as it provides an easier way to install the motor. Around 40 per cent of the current CB range is manufactured with a spline output,” says Henrik Burström.
The CB1120 motor will also have the ability to freewheel, which makes it suitable for more applications.
Big advantages
Lars Andrn and the project team that worked on the CB1120 have big expectations of the new motor, particularly in the mining & materials handling and pulp & paper sectors. “The size and weight are of vital importance, and because the motor is only half the weight and smaller in diameter it requires less space for installation, which of course has economic benefits for machine builders,” explains Lars Andrn. The CB concept is already well-established in washing presses in the paper & pulp industry, and the CB1120 will now be the biggest motor required for this application.
CBM
The project to develop a CBM concept that can replace the rest of the Marathon range continues.
“It it’s a long-term development project that we are working on with a three-year timeframe,” says Lars Andrn.
The Marathon 1150 will remain available as a product for a few years more and then be transferred to the spare parts list.
CB 1120 - same power in smaller package -
• Lower weight, between 50-60 per cent lighter
• Smaller external diameter
• More displacement steps
• Ability to freewheel
• More accessories from Hägglunds range
FACTS
Splines: Used to transfer torque between the motor and the customer’s input shaft. A series of teeth that interlock with corresponding teeth on the shaft.
Freewheeling: The cylinder block can rotate freely when the pistons are pushed into the cylinder block by the cam ring.
Shaft coupling: Used to transfer torque from the motor to a plain shaft. The motor cylinder block is clamped on to the shaft it will drive.
Hägglunds Drives Presents CB1120
HÄGGLUNDS DRIVES PRESENTS CB1120
Hägglunds Compact range is being extended with yet another new product. The CB1120 is the motor that will replace the Marathon MB1150. “We’ll be releasing the CB1120 to sales companies before summer and plan to make the first deliveries in autumn,” says Lars Andrn, project manager.
THE COMPACT CA AND CB motors have been very successful since the CA was launched in the mid-1990s. The CB motor, which came out in 2002, replaced the smaller Marathon motors rated at up to 800 Nm/bar, with excellent results, and this spurred on R&D to develop replacements for the remaining, larger Marathon motors, known within the company as Magnum.
It was this CBM study that led to the development of the CB1120. “During the study we realised we already now could take a step to this new motor. The existing CB range went as high as the CB840, and we saw that it was possible to extend it to the CB1120 and use this to replace our smallest Magnum motor, the MB1150,” says Lars Andrn.
Careful tests
So far the new motor has been tested for more than 2,900 hours in Hägglunds’ laboratory, with excellent results. The motor is based on proven technology, but because it is produced in a larger capacity there are additional piston forces acting on components such as the connection block. This has therefore been strengthened and a new casting developed to cope with the higher loads the motor is subjected to.
The number of components has been reduced considerably compared with the MB1150, in line with Hägglunds’ commitment to modular motor construction.
Separate adapter
Besides the advantages of lower weight and smaller diameter, the new motor is also more versatile, since it can be built with smaller steps in torque capacity. “With the old range of motors there were only two choices of torque – 975 and 1150 – but now we can offer seven torque levels. This is a big advantage as it makes it easier to adapt the motor to the customer’s requirements and optimise our pump unit.”
The CB1120 will only be produced with a splined output, but will also be available with a separate adapter so that the motor can be used in applications where a shaft coupling is required. “The splined output is becoming increasingly common, as it provides an easier way to install the motor. Around 40 per cent of the current CB range is manufactured with a spline output,” says Henrik Burström.
The CB1120 motor will also have the ability to freewheel, which makes it suitable for more applications.
Big advantages
Lars Andrn and the project team that worked on the CB1120 have big expectations of the new motor, particularly in the mining & materials handling and pulp & paper sectors. “The size and weight are of vital importance, and because the motor is only half the weight and smaller in diameter it requires less space for installation, which of course has economic benefits for machine builders,” explains Lars Andrn. The CB concept is already well-established in washing presses in the paper & pulp industry, and the CB1120 will now be the biggest motor required for this application.
CBM
The project to develop a CBM concept that can replace the rest of the Marathon range continues.
“It it’s a long-term development project that we are working on with a three-year timeframe,” says Lars Andrn.
The Marathon 1150 will remain available as a product for a few years more and then be transferred to the spare parts list.
CB 1120 - same power in smaller package -
• Lower weight, between 50-60 per cent lighter
• Smaller external diameter
• More displacement steps
• Ability to freewheel
• More accessories from Hägglunds range
FACTS
Splines: Used to transfer torque between the motor and the customer’s input shaft. A series of teeth that interlock with corresponding teeth on the shaft.
Freewheeling: The cylinder block can rotate freely when the pistons are pushed into the cylinder block by the cam ring.
Shaft coupling: Used to transfer torque from the motor to a plain shaft. The motor cylinder block is clamped on to the shaft it will drive.
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Figs. 1 + 2: The CB1120 has been tested for more than 2,900 hours
Attachments
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