SL 50

Selectra slicing machine - SL 50

    SL 50

    SL 50 Selectra slicing machine

    SL 50 offen

    SL 50 Selectra slicing machine, open


    Optional: Lubrication unit – Patented, oil-mist-free blade lubrication system for precisely dosed, fine lubrication of the belt blades.

    Beölung unten

    Optional: Lower lubrication of the belt blades for mixed bread with up to 40 % rye content.

    Beölung oben

    Optional: Higher lubrication of the belt blades for mixed bread with over 40 % rye content.


    Blade guide: The self-supporting drum suspension enables quick retooling and optimal access for cleaning and maintenance.


    Outfeed: speed is continuously adjustable and thus can be synchronised with the packaging machine.

    SL 50 + GBK 420

    A combination of the Selectra SL 50 slicing machine and the GBK 420 automatic packaging machine is ideally suited for industrial slicing and packaging of bread.

    SL 50
    SL 50 offen
    Beölung unten
    Beölung oben
    SL 50 + GBK 420
    Selectra SL 50
    Layout SL50+GBK420
    Selectra SL 50
    Layout SL50+GBK420
    Standard specification
    Welded machine frame, lacquered in stainless steel design colour, standard
    Hinged door at the outfeed side
    Panels, doors and electrical cabinet or switchbox made from stainless steel
    Hasp locking for cover panels
    Protection hoods made of polycarbonate
    Slides and/or funnels for bread crumbs
    Footrests without dowel holes
    Band-blade drive 5,5 kW
    Conveyor system with adjustable speed
    Accumulating belt in front of the Infeed, stainless steel roller carpet
    Slicer - Bottom infeed: Chain, products between 160 -400 mm
    Product infeed with lateral guides, driven adjustable
    Slicer -Infeed: Side guiding by driven belts
    Slicer -Upper infeed by belt, products between 160 - 400 mm
    Top belt height, driven adjustable
    Slicing compartment with additional sensors with mechanical safety locking for openings
    Equipment stops in case of blade break
    Pneumatic blade tensioning device with automatic tension regulation
    Blade guides with hardened round fingers for one constant slice thickness
    Hand slider (POM with stainless steel handle)
    Set of band blades 18x
    Spare set of band blades 18x
    Lower drum, standard
    Catching tray for crumbs below slicing compartment, extendable drawer, stainless steel
    Crumb scraper, permanent, installed at both drums
    Illumination of the working area inside the machine
    Plate at the infeed side of the slicer Outfeed
    Slicer-Outfeed equipped with chain conveyor with pusher bars, base plate made from structured stainless steel.
    Product outfeed with lateral guides, manually adjustable by handwheel
    Catching tray for crumbs below outfeed position, extendable drawer, stainless steel
    Signal lamp - red light / green light
    Signal horn
    Switch cabinet with hasp locking
    Switch cabinet with fan+filter system - standard-
    Operating elements located in the machine panel or door of the switch box
    Controls + touchpanel Omron
    Frequency converter Hitachi
    Automatic Stand-By control system for behind located machines in case of missing products
    Electric execution according to CE-specification
    Operating language and labels in German language
    Operating manual in German language
    Spare parts catalogue in German language
    Welded machine frame, lacquered in stainless steel design colour. Clean room stage 1 - freely air flow
    Welded machine frame, lacquered in stainless steel design colour. Clean room stage 2/4/5 - clean air funnel, sliding hood and freely air flow
    Welded machine frame, stainless steel, standard (supporting tube for drums made of galvanised steel)
    Welded machine frame, stainless steel (supporting tube for drums made of galvanised steel). Clean room stage 1 - freely air flow
    Welded machine frame, stainless steel (supporting tube for drums made of galvanised steel) with clean room stage 2/4/5 - clean air funnel, sliding hood and freely air flow
    Protection hoods made of perforated stainless steel panels
    Protection hoods for clean room stage 5 - Full housing with clean air funnel
    Band-blade drive 7,5 kW
    Band-blade drive 11 kW
    Accumulating belt for product feeding in front of the Infeed, total length 2,7m with foldable length 1,5 m, plastic roller carpet (Azetal)
    3 Sensors to detect twisted products - installed above the transport system
    Additional set of blade guides with hardened round fingers for one constant slice thickness
    Storage Trolley - Space for up to 5 additional sets of blade guides
    Oiling system for band blades close to the lower pulley incl. oil pump, up to 40% rye content
    Twin -oiling system for band blades close to the upper pulley and close to the lower pulley, incl. oil pump, more than 40% rye content
    Blade sterilization by 2 UV-light radiators (Brand SterilAir, ET2230-4NA, Dose approx. 22-33 mW/cm²)
    Blade sterilization by 4 UV-light radiators (Brand SterilAir, ET2230-4NA, Dose approx. 44-66 mW/cm²)
    Refuse of endpieces / heels. Adjustable plate in front of the slicer Outfeed
    Clean room stage 3/4/5: Crumb suction at the outfeed, guide plates and collecting funnel inside the slicer for crumbs and endpieces. Vibrating slide with channel for bread crumbs installed in the upper slicing housing. Pipeworks up to the central connection point for connection to local suction system
    Switch cabinet with service interface FrontCom® with LAN and power socket
    Additional signal lamp
    Switch cabinet with air-conditioning
    RFID - Panel access authorization per chip, 10 pieces with up to 5 authorization levels
    RFID - Additional chip, 10 pcs. with up to 5 authorization levels
    Controls + touchpanel Allen Bradley
    Control unit with OPC-UA, customer-specific data supply
    Frequency converter Allen Bradley
    Remote service, VPN-Switch INSYS, (Master unit)
    Connection to the central remote service, VPN-Switch INSYS, (Client)
    Voltage modulation, 3-phase
    Electric execution according to UL-specification
    Customer-specific special machine modifications
    Customer-specific operating language and labels
    Customer-specific operation manually
    Remote video URL

    Can the machine be cleaned wet?

    The machines are designed according to protection class IP54. Wet cleaning of the machines inside the cutting and packaging room is not recommended as moisture and bread crumbs directly cause the formation of mold spores.

    Wet cleaning should therefore only take place outside the cutting and packaging room: components of the machine, such as guide plates, can be dismantled and cleaned at an external washing area. After drying and disinfection, the hygienically flawless dry components can be inserted into the device and reused.

    Change kits allow cleaning and preparation in addition to the production operation.

    Is it possible to combine a GHD Hartmann Schneider with other packaging machines?

    Of course, our bread slicers can not only be combined with capping and packaging machines from GHD Hartmann, but also with machines from other manufacturers.

    Take advantage of our many years of experience for optimum coordination and connection.

    How loud is a machine by GHD Hartmann?

    The noise emission initially depends on the type of machine. Packaging machines, cutters or systems for grouping are fundamentally different due to the different functions.

    Another factor is the nature of the products, which can behave differently during processing and transportation. A machine may be very quiet at idle, but produces varying amounts of noise during processing, depending on the products.

    The type of cover also has a great influence on the noise emission: Polycarbonate viewing covers significantly reduce the noise level, while perforated grids can not significantly reduce noise emissions.

    As a rule, the maximum noise emission of the machines is not more than 78 dB (A).

    Which controls can GHD Hartmann Maschinenbau offer?

    In addition to contactor controls for simple devices, GHD Hartmann Maschinenbau offers systems from the manufacturer Omron as a standard controller for more complex tasks.

    Siemens or Allen Bradley are available as options.

    What is the difference between a fixed blade guide and an adjustable blade guide?

    Adjustable blade guides:



    • Complicated access for cleaning
    • Complicated exchange of guiding pads
    • One position for wearing of pads
    • Correct cleaning would require the dismantling of the both adjustable guides. This requires hours
    • Not according to sanitary demands (local laws and rules)
    • If used in combination with oil the unit might “stick together”


    • One system for every slice thickness (if within the adjustable range)
    • Tolerances within the length of loaves are divided to the slice thicknesses


    Exchangeable blade guides



    • One set of blade guides per slice thickness required


    • Always correct adjustment of slice thickness
    • Fingers could be turned several times in case of wearing
    • Fingers could be easily exchanged in case of wearing
    • Jet-wash cleaning and drying outside the packaging area
    • Good access for cleaning
    • Good access for blade exchange
    • Better visibility of the slicing process

    What compressed air quality is recommended for machine use in the food industry?

    According to ISO 8573-1 with reference to VDMA standard sheet 15390-2, we specify a compressed air quality that we recommend when using the machines and devices.

    How is the blade change performed on a band slicer?

    The slicer band blades are a wearing part of the band slicer. The service life of the slicer band blades varies depending on the type of bread. Usually a complete set of slicer band blades is always changed, as the slicer band blades stretch slightly during use and thus become "longer".

    For the slicer band blades change you can disassemble the knife guide for easy accessibility quickly and easily. Depending on the experience, changing a knife set takes about 5-10 minutes


    SL 50

    Fully automatic band slicing machine for toast and mixed rye bread. The slicing process is performed using band blades with a length of 184 inches (approx. 4.7 m). These are tensioned between two hard chrome-plated drums. The self-supporting, torsion-resistant tubular steel frame ensures smooth running of the machine. Generously dimensioned doors and hoods enable good cleaning and maintenance access along with rapid blade changing.

    Technical specifications
    Dimensions: Length: approx. 3810 mm, Width: approx. 1170 mm, Height: min. 2700 mm
    Weight: 1800 kg
    Product dimensions: Length: 160 - 400 mm, Height: 50 - 180 mm
    Capacity: up to 4500 products /h
    Speed of the slicer: adjustable between 180 - 400 m/min
    Band slicer length: 184 inch / approx. 4,7 m
    Controller: Omron
    Operating panel: Touchscreen
    Frequency controller: Hitachi
    Pneumatic system: Festo
    Power supply: 230/400 Volts / 50 cycles
    Power consuption: approx. 6,5 kW
    Compressed air: min. 6,0 bar (ISO 8573-1)
    Operating side: left / right
    Protection class: IP 54
    Adjustment: automatic/ manual