Compact and reliable hydraulic drive system Investment safeguards production at Indonesian sugar mill A state-owned conglomerate, PT Rajawali Nusantara Indonesia (RNI), has placed an order for a hydraulic direct drive system with Bosch Rexroth based on four Hägglunds CBM motors. The system is intended to safeguard production at the Krebet Baru 1 sugar mill on Java. “The sugar mill season lasts six to seven to release the sugar in a five-stage pro- months each year. In that period our cess, rather like a three-roll wringer. The customers must be able to rely on produc- conditions are demanding, involving shock tion working around the clock – regardless loads, high temperatures and flushing of the supply rate and line speed,” says with water several times a day to wash Tomas Kallin, Industry Sector Manager for away dust. Tough application Sugar presses operating continuously in demanding conditions with shock loads, high temperaturs and flushing. Ingenious solution A rugged and reliable solution in a compact design offering a wide range of operations. Sugar at Bosch Rexroth. Reliability a key priority RNI has more than 7,000 employees, Agricultural production is weather-depen- around 20 affiliates and subsidiaries, and dent and if the plantations are wet Krebet 18 production units, 10 of which are sugar Baru does not get any raw material. The mills. The Krebet Baru 1 mill is located in sugar cane cannot be stored either since it Malang, the second largest city in eastern spoils within 24 to 36 hours of harvesting. Java, which is enjoying steady economic To maintain continuous production the growth. speed of the mill is reduced so that it runs The Krebet Baru 1 mill requires reliable slower. The CBM will keep the torque and versatile drives for its sugar presses, ensuring a good extraction. and has in the past had challenges with “The Hägglunds direct drive system has a failures of gearbox solutions. Inside the wider range of operation with good results mill the sugar cane is crushed and washed compared to traditional drive” says Mr Hari Exactly “The Hägglunds direct drive system has a wider range of operation with good results compare to traditional drive” says Mr Hari Widodo Development / Technical manager PT. PG. Rajawali 1 Widodo Development / Technical manager system. The Hägglunds direct drive system PT. PG. Rajawali 1 comprises four 3000 series Hägglunds “The thousands of farmers who deliver the CBM motors, torque arms, shaft adapters raw material depend on the sugar mill to and two Hägglunds Drive Units (with be working on the day they bring their SP500 pumps and 250 kW electric harvest in,” says Tomas Kallin. motors). The order also includes piping, Continuous operation is also essential Hägglunds control system, installation, because the waste product, bagasse, is tools and supervision of installation and also then in turn burned to produce steam commissioning. The drive system was and generate electricity for the mill. Any installed in April 2014. �two Hägglunds DUe drive unit stoppage in production means a delay in „We feel very confident that we have cho- � Spider control system firing up the system again. sen a great solution. We feel very assured ff Piping Solved with �Hägglunds direct drive systems including: �four 3000 series Hägglunds CBM motors , torque arms and shaft adapters also from the well working reference Hägglunds drives opened the door installations that we have seen, says Mr Ali Hägglunds has been supplying products Ansori, Milling Manager at PT Rajawali. to the sugar sector for almost 30 years and installed system, with local access to service personnel. offers the right capacity for this type of Small but powerful „The cooperation with Bosch Rexroth has application. RNI already had good experi- Bosch Rexroth’s Sector Manager sums up worked very well. I‘m happy and pleased ence with Hägglunds MB motors and was the benefits of the system as follows: that the service from Bosch Rexroth is so therefore interested in their successor, “The compact CBM motors save space good.“ says Mr Ali Ansori. Hägglunds CBM motors, which are at least and create a system that can easily be as powerful but also considerably smaller, reconfigured to suit capacity requirements “We naturally see big potential in being a lighter and have an even longer life time. without needing to halt production. The long-term partner to the customer, espe- The local Bosch Rexroth sales representa- drives put less stress on shafts and bea- cially since we can also offer service and tives, Lai Keng Onn (Regional Center of rings during shock loading. Thanks to their support on Java. Krebet Baru is only an Competence for Southeast Asia) and The high torque the motors are also able to hour’s flight away. Our personnel speak Swi Swi (Sales & Project Manager, Indone- squeeze more sugar out of the cane and the same language as the customer and sia), had also previously worked at Hägg- continue driving hard even if someone have completed an extensive training lunds Drives sales office in the region and feeds so much cane into the line that it program on Hägglunds’ products and were familiar faces for the customer. slows down to almost a standstill. If that’s receive regular additional training.” As a result Bosch Rexroth was added to not enough, the drive can also be reversed “This means we can meet our customer’s RNI’s approved supplier list and given the so that the trapped material can be remo- requirement to be ready when the busy opportunity to tender for contracts. A deal ved.” harvest season starts up again,” conclu- was signed in June, and Bosch Rexroth Another feature the customer sees as a des Tomas Kallin. Indonesia now has its first order from RNI. benefit is having a supplier who takes total The order is an Independent Roll Drive responsibility for a complete and fully