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Fixed chamber round baler


The SIPMA PS 1235 PIONIER fixed chamber round baler is designed for collecting green fodder for hay silage. It is also perfect for collecting straw and hay.

The round roller baling chamber sized 1.2 x 1.25 m comprises 17 durable ribbed rollers, each 232 mm in diameter, which firmly compact the material and rotate the bale inside irrespective of the operating conditions.

The double-row barrel bearings installed on the rollers which work under the highest load assure long operating life and reliability of the machine.

The rotation feeding and shredding unit with 11 knives guarantees that the material flows fast and efficiently to the baling chamber. The preset cutting length of 90 mm makes the material perfect for forming properly compacted green fodder bales. Cutting of the collected material makes the bales 20% heavier than bales rolled without cutting. This also improves the fitness of material for handling.

The individual knife overload safety gear protects the shredder from stones and other foreign bodies which may damage the unit. This also increases the machine operating life.

The rotor tilt bottom system allows fast and easy clearing of jams of the rotor in the shredder. This way the machine operator can clear the baler rotor without leaving the tractor cab.

To push feed the material into the baling chamber, the rotor tilt bottom simply needs to be lowered with the cab computer panel, the PTO started and and then the rotor bottom returned to its original position.

The pickup is 2 m wide and properly collects wide swath, even in tight turns, and the side conveyor screws assure smooth flow of the material to the shredding unit trough.

The pick-up press roller helps heeping the picked material flow even and pre-compacts the material.

The tool-free pick-up support wheel adjustment allows quick and easy setting of the pick-up working height and thus easily adapting the unit to various terrain conditions and swath depth. 

The "duck-bill" net binder feeds the net directly to the rolling chamber, which produces properly bound bales.

The net loading and replacement is done from the ground level, without the need to scale the machine.

Hydraulic system

The electrohydraulic power block operates all working parts of the machine and assures its steady and optimum performance. The continuous oil cycle in the hydraulic system allows automatic starting of machine functions without manual intervention of the operator.

Fixed chamber baler SIPMA PS 1235 PIONIER


An electronic control adjusts and monitors the collection, binding and bale unloading cycles. The device also monitors the machine units for proper performance.

Functionalities of an electronic control:

  • starts and performs the automatic machine work  cycle,
  • defines the bale net wrap number,
  • monitors the even filling of the baling chamber,
  • defines and controls the compaction ratio and chamber fill ratio,
  • visualises actual operating stages,
  • monitors and displays sensor status,
  • enables control over the pick-up, the blades and the titl rotor floor at any moment of the machine work cycle,
  • indicates the number of rolled bales, the operating time, the work output and the amount of net remaining on the reel.

Grouped bearing greasing points reduce the servicing time, increase the service life of bearings and improve the comfort of the machine operation.

The automatic drive chain lubrication system improves the operating life and reduces the servicing time of the chains. The large oil tank capacity minimises the time of daily machine servicing.

Automatic lubrication of bearing of wrapping rolls and an incisor (additional equipment). An advanced pressure system effectively delivers grease to all points by means of pipes. The automatic bearing lubrication system makes it possible to reduce the servicing time of the machine by limiting the lubricating activity to filling up a container with lubricating liquid.

The polyester glass laminate press covers protect the moving parts and secure the machine from scratches and dents, while giving the unit a dynamic and modern appearance. The cover opening style gives the operator easy access to the machine parts.

The wide angle PTO shaft with automatic clutch allows the machine to work on headlands and protects the baler from overload damage.

The binding system can accommodate net up to 1.3 m in width and 4500 m in length. The number of wrapped net layers is preset on the cab computer panel by the operator.

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Model   PS 1235 PIONIER
Pick-up width mm 2000
Pick-up lift   hydraulic
Chamber type
Number of baling rollers pcs. 17
Baling chamber dimensions

width mm 1200
diameter mm 1250
Chamber lock
Max. no. of knives pcs. 11
Knife protection   mechanical
Knife operation   hydraulic
Jam clearing system   tilt bottom
Land follow wheels   pneumatic
PTO rotational speed rpm 540
Power demand

without shredding kW (HP) 60 (82)
with shredding kW (HP) 75 (102)
wide-angle PTO shaft with automatic clutch
pressing roller  
net binder  
electronic control
automatic chain lubrication  
bearing group lubrication  
automatic bearing lubrication  
wide tyres 400 / 60 - 15.5  
wide tyres 500 / 50 - 17  
length mm 4300
width mm 2550
height mm 2500
Weight kg 2990

  - standard,  - additional equipment,  - unavailable

Lp. Nazwa dokumentu Rozmiar
1Product Catalogue of SIPMA29,63 MB

Fixed chamber round baler SIPMA PS 1235 PIONIER