Navigation : EXPO21XX > MOTION 21XX > H29: Gears & Gearboxes > MIJNO
  • Offer Profile
  • MIJNO (est. in France in 1919) conceives and manufactures precision gears, ground racks and low backlash planetary gearboxes.
    As a leader in manufacturing racks, pinions and gearheads, we very likely have products that will go well with your servo-application. If we don't, then our R&D department can design them so that we can manufacture them for you. Our products can be assembled via a large variety of combinations; however, some choices could optimize your application. 
    Looking for high quality gears? This is what we have been doing for more than 90 years.
Product Portfolio
  • Precision servo gearboxes

  • MIJNO has conceived and produced low backlash planetary gearboxes since 1968.
    We utilize this know-how when developing custom gearboxes for nuclear, robotic, space and defense industries.
    Below are our ranges of servo gearboxes. One surely fits your application.
      • MRP planetary gearbox

      • - 290 Nm rated
        - For standard duty in servo applications.

        • Satellite gears are cantilever supported on hardened and ground shafts
        • Output shaft is supported by 2 ball bearings and is oversized in order to increase radial load capability and lifetime
        • Backlash: from 15 to 8 arc-minutes
        • Output end mounting face features 8 threaded holes
        • Efficiency: from 91% to 96%*
        • Up to 13 standard ratios* / custom ratios available
        • Great choice of output interfaces (8 threaded mounting face holes & shaft hole)
        • Easy 1 minute clamping onto any motor shaft (self-locating input flange)
        • Standard case temperature range is –20°C to +90°C - Consult us for higher or lower temperature use
        • Protection rated IP 54 standard
        • Optional lubrication for food-processing or pharmaceutical industries
        • Easy maintenance (every 15,000 hours)
      • MNT planetary gearbox

      • - 1,000 Nm rated
        - Heavy duty, very low backlash and high torsional stiffness.


        • Satellite gears are double-supported on hardened and ground shafts with full-complement needle bearings for increased torsional stiffness
        • Output shaft is supported by 2 angular contact bearings for maximal radial and axial load acceptance
        • Backlash from 8 to 1 arc-min max*
        • 13 standard reduction ratios from 3 to 100 / custom ratios available
        • ISO and DIN output interfaces
        • Easy 1 minute clamping onto any motor shaft - Self-locating input flange
        • Standard case temperature range is –20°C to +90°C - Consult us for higher or lower temperature use
        • Protection rated IP 65 standard. IP-67 & 1500 psi water jets available
        • Washdown stainless steel version available
        • Optional lubricating grease for the food-processing industry
        • Easy maintenance
      • BDB planetary gearbox

      • - 10,000 Nm rated
        - Heavy duty, very low backlash, high torsional stiffness.

        • Rotating output flange instead of traditional output shaft enables unique power transmission solutions. It is supported by 2 angular contact bearings or tapered roller bearings for maximal radial and axial load acceptance
        • Satellite gears are double-supported on hardened and ground shafts with full complement needle bearings for increased torsional stiffness
        • Very low backlash (5 to 1 arc-min max*)
        • Up to 14 standard ratios from 3 to 220 / custom ratios available
        • ISO or DIN output interface
        • Easy 1 minute clamping onto motor shaft (self-locating input flange)
        • Standard case temperature range is –20°C to +90°C - Consult us for higher or lower temperature use
        • Protection rated IP 65 standard. IP-67 & 1500 psi water jets available
        • Washdown stainless steel version available
        • Optional lubricating grease for the food-processing industry
        • Easy maintenance (every 15,000 hours)
      • MRA right-angle planetary gearbox

      • - 600 Nm rated
        - Silence and low, stable backlash.

        • Backlash: from 15 to 5 minutes*
        • Hollow shaft, double shaft or quadri-shaft versions available
        • Efficiency: from 91% to 96%*
        • Up to 13 standard ratios* / custom ratios available
        • High output torque versions available upon request
        • Easy 1 minute clamping onto any motor shaft (self-locating input flange)
        • Standard case temperature range is –20°C to +90°C. Consult us for higher or lower temperature use
        • IP 65 standard waterproofness. IP-67 & 1500 psi water jets available
        • Washdown stainless steel version available
        • Optional lubrication for food-processing or pharmaceutical industries
        • Easy maintenance (every 15,000 hours)
      • Washdown stainless steel planetary gearbox

      • - Up to 12,000Nm
        - Down to 1 arc-min


        BDB, MNT and MRA ranges are available in washdown versions combining

        - All-external stainless steel construction

        - Protection rating IP67

        - food-grade lubrication

        Performances are similar to the ones of the standard ranges.
      • Custom gearboxes
         

      • Modified standards or single-purpose gearboxes

        • Conception: from your specifications, or from your drawing.
        • Components either derive from our standard range (in order to optimize your costs) or are designed to meet your technical expectations. In other words, we can modify an existing design or create a 100% new product for you.
        • Torque: up to 12,000 Nm (16,272 Lb-ft)
        • In-Line, Parallel Shaft, or Right-Angle Geometry.
        • Various output configurations (solid shaft, flange or hollow-shaft)
        • Down to 1 arc-min max backlash
        • “Exotic” metals and hardening treatments when required.
        • Electronic components integration and testing.
        • From prototypes to middle-size production runs
      • Power transmission packages

      • - From 1 to 130,000 N

        We can securely fasten the rack pinion on a gearhead shaft upon request and deliver the whole set (gearbox, gear, racks that are guaranteed to work together).
        The particularly quiet and precise running of gearbox-pinion-rack sets is ensured by :
        • The use of precision ground teeth in our gearboxes according to DIN class 6 to 5 accuracy.
        • Rack and pinions with ground teeth including a proprietary modification of the tooth profile called “ROTAXE™”, developed for high speed applications. This improves smoothness and reduces wear (more information on www.mijno.com). You'll hear the difference.
        • Pinion and rack backlash cancellation technology
  • Precision gears

  • Gears have been our core know-how since 1919.
    We produce all types of gears: straight gears, helical gears, bevel gears, worm gears and splined shafts. Quantities per delivery vary from 1 to 200 units.
    We utilize the highest performance, newest generation equipment for the production and control of your gears. Our expertise has earned the trust of machine-tool, medical, military, nuclear and aerospace industries. Our 120 machines allow us to proceed to every machining operation which is necessary on your drawing (turning, milling, all kind of grinding operations...). We are certified ISO 9001.
      • Available types, dimensions and precisions

      • - DIN 8 to 4
        - AGMA 8 to 14


        CYLINDRICAL GEARS
        External toothing (straight or helical teeth)
        - Cutting: module 0.4 to 10 (DP 63.5 to 2.54); Ø 10mm to 500 mm, DIN 8 to 7
        - Grinding: mod. 0.4 to 8 (DP 63.5 to 3.175); Ø 10mm to 400 mm, DIN 6 to 4
        Internal toothing
        - Cutting: mod. 0.4 to 8; Ø 20 mm to 600 mm

        BEVEL GEARS (straight toothing)
        - Cutting: mod. 0.5 to 10; Ø20 mm to 500 mm

        WORM GEARS
        - Mod 0.4 to 8

        SPLINED SHAFTS
        - Norms DIN 5480/5482; ANSI B92
        - External : L max. = 2000 mm; Ø max = 100 mm; max. weight = 400 Kg
        - Internal : L max. = 160 mm; Ø max = 100.
         
      • Heat and surface treatments
         

      • - Heat treatments, surface treatments, coatings.

        Witin MIJNO group we offer the following:
        - Stabilizing
        - Case hardening
        - Tempering and annealing
        - Quench
        - Gas nitrading (Carbonitriding)
        - Salt bath (Tenifer) nitriding
        - Stainless steel hardening
        - Treatment of bronze, aluminium and custom steels

        Other treatments and coatings within our local subcontracting network include:
        - Plasma nitriding
        - Induction hardening
        - Cataphoresis
        - Phosphating
        - Anodizing
        - Various coatings (Teflon, Zinc...)
      • Available tests and controls

      • - Dimensional, destructive and non-destructive tests

        Dimensional measurement
        - Gear inspection centre (picture)
        - Mitutoyo 3D gantry-type measuring device
        - Computerized profile projection
        - Binocular inspection
        - Micrography
        - Nital tests
        - Magnetic particles inspection
        - Noise measurement
  • Precision racks and pinion

  • We have produced precision racks since 1972.
    Based on our experience, we have imagined 5 ranges of racks for your translation and / or positionning applications. Most of those models are interchangeable with other industry standards.
    Consult us if the product you are looking for is not in this range.
      • Rack for translation (on stock)

      • - Mod 2 to 10 - DIN 8
        - Length 500 & 1000
        - 650 N.mm² steel
        - Lin. 0.06 mm/m
        - Perp.: N/A (not ground)
      • Rack for fast translation

      • - Mod 2 to 10 - DIN 7
        - Length 500 & 1000
        - 1000 N/mm² steel
        - Lin. 0.06 mm/m
        - Perp. 0.02 mm
      • Ground rack for fast positionning

      • - Mod 2 to 10 - DIN 6
        - Length 500 & 1000
        - 1000 N/mm² steel
        - Lin. 0.02 mm/m
        - Perp. 0.01 mm
      • Ground rack for heavy duty

      • - Modules 5, 6, 8 - DIN 6
        - Length 1000 mm
        - 650 N/mm² / 53-58 HRC
        - Lin. 0.02 mm/m
        - Perp. 0.02 mm
      • Custom, precision racks and pinions

      • - Mod 1 to 12 ; DIN 7 to 5
        - Length 2100 mm max
        - Perp > 0.01 mm
        - Parall > 0.015 mm/m