Used Klingelnberg - Dold - Saazor Zahnstangenfräser for sale (239)

Condition: used, functionality: fully functional, Various used rack milling cutters / rack group milling cutters from different manufacturers. Our asking prices are net, ex works, plus packaging costs, starting from €170. Individual prices as follows: Manufacturer: Arnold Dold GmbH & Co.KG Module 0.5 - Group milling cutter - Asking price €370 Module 0.7 - Group milling cutter - Asking price €380 Module 0.9 - TIN coating - Asking price €530 Module 1 - 2 units available - Group milling cutter - Asking price €390 Module 1.25 - Group milling cutter - Asking price €410 Module 1.5 - TIN coating - Asking price €750 Module 1.75 - Group milling cutter - Asking price €730 Module 2 - 4 flutes - one defect - 1.89 kg - Asking price €210 Module 2 - TIN coating - Asking price €770 Module 2.5 - 8 flutes - one defect - 13.52 kg - Asking price €470 Module 3 - one defect - 13.29 - Asking price €230 Module 3 - 7 flutes - Reground - 13.77 kg - Asking price €200 Module 3 - 3 flutes - Asking price €290 Module 3 - TIN coating - Asking price €520 Module 5 - 4 flutes - Reground - 12.15 kg - Asking price €170 Module 5 - 4 flutes TIN coating - Asking price €750 Module 6 - 3 flutes TIN coating - Asking price €760 Module 6 - 3 flutes TIN coating - Reground - 11.16 kg - Asking price €400 Module 7 - 3 flutes Reground - 11.41 kg - Asking price €430 Module 8 - 3 flutes Reground - 5.28 - Asking price €190 Module 8 - Reground - Asking price €450 Module 8 - TIN coating - Asking price €780 Module 10 - TIN coating - Asking price €790 Module 10 - Reground - Finished milling cutter - 0.515 kg - Asking price €320 Module 12 - 2 units - TIN coating - Finished milling cutter - Asking price €580 Module 13 - Finished milling cutter - Asking price €410 Module 14 - Reground - 5.18 kg - Asking price €240 Module 16 - Asking price €600 Module 16 - Reground - 5.14 kg - Asking price €300 Fgjdpeytrh Esfx Al Seh Involute angle: 20° BPII-Ü Bore diameter [mm] 40; 50; Groove [mm] 10: 12 Width [mm] 32.5; 45.5; 44; 17/21; 16/20; 14/18; 21/25; 18/22; 65/73; 48/57; 31; 66/72; 69/77; 70/78; 60/64; 60/66; 82; 72/80; 82; 40; 39; 47; 52; 56; 64 Outer diameter [mm] 169; 140; 141; 200; 150; 198; 195; 199; 197; 201; 200; 219; 192; 191 Manufacturer: Saazor - Wälztechnik ZORN GmbH & Co. KG Module 1 - 16 flutes TIN coating - one defect - 10.18 kg - Asking price €510 Module 1 - 16 flutes TIN coating - Asking price €590 Module 1.5 - 9 flutes Group milling cutter 9 flutes - Asking price €560 Module 2 - Pin milling cutter - Asking price €390 Module 6 - Pin milling cutter - Asking price €640 Module 10 - TIN coating - Asking price €350 Involute angle 20° DIN 3972 II - Ü or DIN 3972 II Kl. A - Ü Bore diameter [mm] 40 Groove [mm] 10 Width [mm] 52/60; 55/85; 60/90; 33/40 Outer diameter [mm] 176; 200; 198; 199 Manufacturer: Klingelnberg Module 2.5 - Asking price €360 Module 2.75 - Asking price €380 Module 3.25 - Asking price €170 Module 3.75 - Asking price €200 Module 4.5 - Asking price €220 Involute angle 20° Bore diameter [mm] 40 Groove [mm] 10 Width [mm] 30/38; 28/36; 35/42; 39/47; 44/52 Outer diameter [mm] 148; 149; 150 Subject to typing and calculation errors. Sales are exclusively within the EU countries.

Condition: excellent (used), Year of construction: 2005, CNC-controlled gear hob sharpening machine SOLITEC AFS 250 - Complete overhaul of a KLINGELNBERG AGW231 by SOLITEC - - Clean and like-new condition Year of manufacture: 2005 Machine no.: 109/05 Control: SM 400 Technical data: Work spindle taper: ISO 40 Max. milling cutter diameter (spiral): 230 mm Max. milling cutter diameter (straight): 250 mm Number of grindable flutes: 1-99 Max. grinding slide stroke: 464 mm Min./Max. grinding wheel diameter: 150/250 mm Max. grinding depth: 50 mm Setting accuracy (roughing): 0.005 to 0.2 mm Setting accuracy (finishing): 0.005 to 0.1 mm Hydraulic pressure: 12 bar Fsdpfx Aez E H Hiel Sjgh Weight approx. 4,600 kg with coolant band filter system

Condition: excellent (used), Year of construction: 1982, KLINGELNBERG SNC 30 GRINDER Brand: Klingelnberg Model: SNC 30 Type: Industrial grinder Year: 1982 Serial number: 3837 FEATURES: Fgedpfoy S Akpex Al Ssh – Complete machine – Hydraulic unit and filtration system included – Heavy-duty industrial installation – Precision machine – Equipment visible in the photos

Condition: used, Year of construction: 2007, max. wheel diameter 400 mm workpiece dia. 36-300/400 mm axis distance 135-290 mm spindle turning speed - stepless 3000 1/min dist. between centers 100-550 mm Control Siemens 840D weight of the machine ca. 4000 kg dimensions of the machine ca. 2000x3055x2788 mm Fgjdpfoy D T Sujx Al Ssh Test method: - Single flank rolling test - Double flank rolling test - Structure-borne noise test - Heli testing in two-flank contact. Features: - Use of up to 6 test slides - Highest testing accuracy and repeatability - Machine table with workpiece drive - Swiveling pneumatic unit - Spray oil lubrication (type: Vogel) - Oil mist extraction (type: Elbaron)

Condition: used, Year of construction: 1989, grinding diameter 350 mm grinding length 660 mm max. module 25 min. module 0,5 Control CNC total power requirement 30 kW Fjdpfxsz Drb Nj Al Segh weight of the machine ca. 8,7 t

Condition: excellent (used), Year of construction: 1998, functionality: fully functional, total length: 1,980 mm, total height: 2,150 mm, total width: 1,850 mm, type of input current: AC, distance between centers: 750 mm, input voltage: 220 V, workpiece diameter between centers: 350 mm, workpiece diameter (max.): 350 mm, year of last overhaul: 2026, overall weight: 750 kg, Technical data: – Workpiece diameter max. 350 mm – Distance between centers 0–750 mm – Measurable tooth width: 600 mm – Largest/smallest module 12–1.5 mm – Workpiece table diameter 260 mm – Installation dimensions: Length × Width × Height 1980 mm × 1850 mm × 2150 mm – Machine weight: net 750 kg Control system: Zeiss ST 57 Required power supply: 220 volts, 50 Hz, compressed air: 8 bar Machine accessories: – Basic machine with probe holder – Zeiss VAST measuring head – Zeiss quick-change probe system with 4 positions – Calibration sphere Fodpfoz Hd I Tex Al Sogh – Complete set of workpiece carriers – Auxiliary table – Probe assortment: Various measuring probes for different modules – Quick-change tool holder for holding various measuring probes / a total of 4 – New MINI computer with monitor and printer – Operating manual in English Software: Standard equipment – New software module for testing spur and helical gears, evaluating K profiles, pitch, concentricity and Klingelnberg index – Selectable software language – Evaluation according to DIN/ISO/AGMA/customer-specific tolerances

Condition: used, functionality: fully functional, Used involute milling cutters, newly ground and coated (6 pieces) Module 14-20 degrees Fodpfx Alsy S R A Tj Ssgh Module 12-20 degrees Module 8-20 degrees Module 6-20 degrees Module 0.6-20 degrees Module 0.5-20 degrees

Condition: used, Year of construction: 2006, voltage 110 - 230 V frequency range 50 - 60 Hz Power connection 0,5 kVA Dimensions (HxWxD) 1000 x 800 x 1750 mm weight 150 kg Measuring machine for bar knives. Equipment/accessories: -Measuring tools -Clamping devices -Computer -Monitor -Printer Fodpfx Aloyhq T Ae Segh -Cabin -Technical documentation

Condition: good (used), Year of construction: 2006, voltage 110 - 230 V frequency 50 - 60 Hz Power connection 0,5 kVA weight 150 kg dimensions of the machine ca. 1,0 x 0,8 x 1,75 m Stick blade profile control unit - Control via PC control with Windows XP operating system - Digital drive amplifiers, linear motors and measuring systems - Fully automatic position determination of the cutting edges and axis position of the stick blade - Measurement of almost all single-part and continuous processes required for spiral bevel gears and hypoid gears - Machine concept designed for the shortest set-up and changeover lines and maximum measuring accuracy - Combination probe for measuring tip and surface measurement Fgedpfjymfz Sox Al Ssh - Integrated drawer for accessories - Keyboard integrated in flat drawer - Operating elements and PC protected against unauthorized access with lockable cabinet element

Condition: used, Year of construction: 2007, max. wheel diameter 500 mm Hypoid adjustment ±70 mm axial cross angle 90 ° Fgjdeukitxspfx Al Ssh Distance Y- 150 - 350 mm Distance Z-axis 120 - 340 mm turning speed range - stepless 0 - 5000 U/min max. torque on the spindle 57 Nm Cone 99,2 mm Pull-in force Tool clamping 23000 N Braking torque max. 93 Nm total connected load 20 kVA total power requirement 15 kW weight of the machine ca. 6 t dimensions of the machine ca. 2,35 x 2,24 x 2,5 m

Condition: excellent (used), Year of construction: 2007, max. wheel diameter 400 mm weight of the machine ca. 4 t Q U O T A T I O N We are pleased to offer you ex our stock, subject to prior sale, and error in technical data : KLINGELNBERG Fodexvdryspfx Al Sogh Single- and double-flank rolling test machine with structure-borne sound testing model R 30 year 2007 _____ Workpiece outer diameter min. / max. 36 / 300 mm Center distance between workpiece and counter wheel 135 - 290 mm Spindle speeds max. 3.000 rpm Drive torque max. up to 2196 rpm 20 Nm Drive torque max. 2196 – 3.000 rpm 14,7 Nm Spindle drive 4,62 kW Total drive approx. 10 kW - 400 V - 50 Hz Total weight approx. 4.000 kg Accessories / Special Features: • The machine is a universal rolling tester designed for the following testing procedures: o Single-flank rolling test o Double-flank rolling test o Structure-borne noise testing in single and double-flank contact o Helix testing in double-flank contact • WINDOWS PC control for measurement data acquisition and analysis with the NoisyS32 testing software • SIEMENS control panel for operating the machine and evaluating the test cycles • Complete enclosure with electrically monitored sliding doors • Attached control cabinet, various accessories, operating instructions • Unfortunately, the license dongle for activating the measurement software is currently missing. We hope to receive it from the supplier of the machine. Condition : very good condition ! Almost unused ! Soon : Please click here to view a video of the machine running : ! Delivery : immediately available, FCA Metzingen Payment : 100 % Net, after conclusion of contract, before loading We always have a large selection gear machines – CNC or conventional - available. Please let us know your requirements.

Condition: excellent (used), max. wheel diameter 200 mm gear width 300 mm module 0,5 - 25 centre distance 750 mm Fsdpoy Umi Ijfx Al Sogh weight of the machine ca. 0,2 t dimensions of the machine ca. 0,8 x 0,6 x 0,6 m worm testing roll-machine

Condition: excellent (used), Year of construction: 1988, TECHNICAL DATA. Max. clamping length: 90 mm Tool clamping height with tapered shank: 50 mm Tool clamping height with straight shank: 45 mm Max. helix angle: 45° Number of clamping positions: 1 to 99 Max. slide travel: 550 mm Max. grinding wheel diameter: 350 mm Fodpfx Aswwkacsl Segh Min. grinding wheel diameter: 150 mm Grinding wheel speed (variable): up to 2700 rpm Swivel range of grinding spindle axis: 0° to 15° Grinding slide feed rate (variable): 0.05 to 16 mm/min (with 3rd and 4th axis: 0.05 to 8 mm/min) Workpiece spindle taper: ISO Taper No. 40 Grinding Wheel Data CBN and diamond cup grinding wheel: Ø200 mm → Min. DFF: 66 (3rd axis), 76 (4th axis) Ø250 mm → Min. DFF: 16 (3rd axis), 26 (4th axis) CBN-ES cone grinding wheel: Ø200 mm → Min. DFF: 50 (3rd axis), 60 (4th axis) Ø250 mm → Min. DFF: 0 (3rd axis), 10 (4th axis)

Condition: ready for operation (used), The Klingelnberg PSR 500 U worm gear testing machine was designed as a universal machine for the flexible testing of worm gears and is used by manufacturers of gear and transmission technologies for the single-flanking rolling test process for worm gear sets (EFWP). Technical data: Max. worm gear diameter: 500 mm Max. spindle length: 500 mm Max. spindle diameter: 200 mm Center distance: 0 ... 400 mm Max. measuring speed: 60 rpm Braking torque: 2.5 Nm Fgedpfx Alezxghvj Sjh Max. worm gear weight: 150 kg Max. spindle weight: 50 kg Table diameter: 300 mm Machine weight: 800 kg Dimensions: 1500 x 1500 x 1600 mm The following parameters can be measured here: • Flank deviations Fi', fi', fl', fk' • Flank clearance, runout, roundness (option) • Contact pattern with digital camera • Pitch deviation • FFT analysis, spectrum *Image shows the machine in its current condition as a retrofit/modernized unit. *Further information about the machine is available upon request.

Condition: ready for operation (used), Year of construction: 2007, functionality: fully functional, wheel diameter: 400 mm, overall weight: 4,000 kg, distance between centers: 550 mm, spindle speed (max.): 3,000 rpm, controller model: Siemens 840 D, TECHNICAL DETAILS Max. wheel diameter: 400 mm Workpiece diameter: 36–400 mm Centre distance: 135–290 mm Max. spindle speeds (infinitely variable): 3,000 rpm Fgedpfx Ajywg Hxel Ssh Centre width: 100–550 mm MACHINE DETAILS Control: CNC Siemens 840 D Dimensions & Weight Space requirement: approx. 2,000 x 3,055 x 2,788 mm Machine weight: approx. 4,000 kg EQUIPMENT Single-flank rolling test Double-flank rolling test Structure-borne noise testing Helical contact testing (double-flank contact) Use of up to 6 test carriages Highest test accuracy and repeatability Machine table with workpiece drive Swivelling pneumatic unit Spray lubrication (Type: Vogel) Oil mist extraction (Type: Elbaron)

Condition: used, max. wheel diameter 0-200 mm max. module 25 min. module 0,5 Fedpfxotuxa Us Al Sogh

Condition: good (used), Year of construction: 2002, max. wheel diameter 275 mm gear width 55 mm Fjdpfxstumrpe Al Segh max. module 6 min. module 1 Control 840 C Siemens total power requirement 100 kW weight of the machine ca. 16,7 t dimensions of the machine ca. 5,2 x 2,3 x 2,4 m m

Condition: excellent (used), Year of construction: 1988, functionality: fully functional, Technical Data Fgodpfx Aoxtiunel Soh Grinding/Workpiece Diameter: up to approx. 300 mm (partially up to 350 mm) Grinding Length/Stroke: approx. 550 mm (slide travel) Module range (for hobbing cutter resharpening): min. module approx. 0.5 to max. module approx. 25 Number of flutes: typically 1–99 pieces (depending on tool set) Grinding wheel diameter: approx. 150–300 mm Grinding wheel speed: up to about 2,700 rpm Centre distance (workpiece spindle): typical range 400–800 mm Swivel/Pitch range: e.g. grinding wheel head swivel 0–15° Machine weight and space requirement: approx. 4.2–4.9 t weight; space approx. 3 × 2.6 × 2.3 m Electrical data: operating voltage e.g. 380 V three-phase, control 24 V, auxiliary voltage 220 V

Year of construction: 2002, condition: used, z-travel 200 mm Clamping diameter of the cutter heads max. 550 mm Max. permissible cutter head weight 150 kg Mounting plate diameter for cutter heads 360 mm Mounting cone for cutter heads Nominal diameter 500 mm weight of the machine ca. 2,3 t dimensions of the machine ca. 2 x 1,5 x 2,03 m Cutter Head Set-Up- and -Measuring Machine In the manufacturing process for spiral-toothed bevel gears, the quality of the gear cutting gear cutting tools used plays a decisive role. Particularly in dry milling, high gear cutting quality and a long service life can only be achieved with precisely adjusted cutterheads. The Oerlikon cutterhead setting and testing device CS 200 enables quick and easy setting of the individual knives and simple adjustment of the individual knives, it checks the position and documents the measurement results. The measuring sequence on the CNC-controlled testing device is partially automated: The individual actions for carrying out the actions for carrying out the sequence are displayed on the screen via the operator guidance. The positioning of the individual knives in the cutter head and the height of the knife tips is largely automatic thanks to a special sequence and is simultaneously documented by means of a run-out diagram. A subsequent measuring sequence checks the radial position of the inner and outer cutting edges of all knives in the cutterhead. If individual test parameters on the knives do not correspond to the the tolerance specifications, this can be individually repositioned. The combination of semi-automated setting sequence, operator-guided set-up actions and automatic operator-guided set-up actions and automatic measuring sequence, cutterheads can be can be set conveniently, quickly and with high precision. Operator-guided setting and test sequence - Graphic display of the cutter head design and the measurement results with tolerance check - Instructions for the operator in plain text Instructions for the operator in plain text (without coded information) - Simple assignment of the measurement results to the knives Fgsdpfx Aey A S U Sol Soh - Documentation of the setting and measurement results via printer- Setting and test sequence suitable for ARCON®, RSR, Spirapid, SPIRON®, TRI-AC® types - Interface for neutral data

Condition: ready for operation (used), functionality: fully functional, metric thread pitch (max.): 500 mm, metric thread pitch (min.): 1 mm, grinding length: 500 mm, grinding wheel diameter: 500 mm, rotational speed (min.): 1 rpm, metric thread diameter (min.): 10 mm, rotational speed (max.): 26 rpm, metric thread diameter (max.): 350 mm, clamping length: 1,200 mm, grinding wheel width: 60 mm, spindle speed (max.): 26 rpm, spindle speed (min.): 1 rpm, grinding spindle speed: 3,000 rpm, grinding spindle motor power: 12,000 W, grinding diameter: 350 mm, grinding wheel speed: 3,000 rpm, type of input current: three-phase, center width: 150 mm, Equipment: rotational speed infinitely variable, KLINGELNBERG HSS 350 Grinding machine – Special offer due to stock clearance 🔥 High-precision CNC grinding machine, perfect for gears, worm screws, and custom parts. Fully functional and ready to use. 🛠 Key technical specifications: • Workpiece diameter (max./min.): 350 mm / 10 mm • Clamping head bore diameter: 130 mm • Max. distance between centers: • With front centering tip: 750 mm • With rear centering tip: 1200 mm • Max. workpiece length: Unlimited • Max. shaft diameter (left/right): 130 mm / 150 mm • Max. grinding length: 500 mm • Max. number of gear teeth: 30 • Module (max./min.): 25 / 0.5 • Pitch (max./min.): 500 / 1 mm • Pressure angle (max./min.): 30° / 0° • Max. helix angle: 45° ⚙️ Grinding System Features: • Grinding wheel diameter (max./min.): 500 mm / 300 mm • Grinding wheel speed (stepless): 75 – 3000 rpm • Max. cutting speed: 45 m/s • Drive motor power: 12 kW • Workpiece spindle speed (stepless): 1 – 26 rpm 📐 Grinding Wheel Widths: • For thread grinding: 15 mm • For worm screws up to module 12: 25 mm • For module 12 to 20: 40 mm • For module 20 to 25: 60 mm 💻 CNC Control: FANUC Series 21-It ✅ Ideal for: • Gear manufacturers • Worm screw production • Precision machining workshops • Industrial machinery repair 📌 Limited-time offer due to machinery update Fgodpfxehq Uh Hj Al Seh Take advantage of this opportunity to acquire a high-performance CNC grinding machine with professional specs and immediate availability!

Year of construction: 1987, condition: ready for operation (used), Center width: 400-800mm, rotational speed: 1000-2700/min, workpiece diameter: 10-300mm, grinding wheel diameter: 40-300mm, swivel angle: -45 to 45°, length: 3000mm, width: 2500mm, height: 2275mm, with oil mist separation system Hoffmann (new filter inserts), filter system gravity belt filter Faudi, hydraulic unit, additional grinding head for grinding worm gears, grinding mandrels diameter 50, 40, 27, 22, holder for SK40 and MK5, driver sets for different clamping diameters, operating instructions, circuit diagrams in paper form, an inspection is possible. Fjdpfx Alergahxj Ssgh

Condition: good (used), Year of construction: 2007, max. wheel diameter 500 mm Fjdpfx Aovr Hf Ejl Ssgh gear width 200-400 mm module 12 turning speeds 0-3250 U/min bracke pressure bis max. 95 Nm inner taper Konus #39 Control Fanuc 16 total power requirement 15 kW weight of the machine ca. 6 t dimensions of the machine ca. 2.350 x 2.240 x 2.500 mm HIGHLY FLEXIBLE TESTING OF HARD, FINISHED AND GREEN SPIRAL BEVEL AND HYPOID GEAR SETS The T 60 bevel gear testing machine is a CNC testing machine with three linear axes for the fully automatic hard and soft testing of spiral bevel and hypoid gear sets with a 90° axis angle. It offers versatile objective and subjective testing options with speeds up to 3,250 min and braking torques up to max. 95 Nm.

Condition: ready for operation (used), Year of construction: 2001, functionality: fully functional, grinding wheel diameter: 200 mm, workpiece length (max.): 200 mm, TECHNICAL DETAILS Grinding wheel diameter: 100–200 mm Fgodsya Dy Hjpfx Al Sjh Maximum workpiece length: 200 mm MACHINE DETAILS Control: Siemens 840D or equivalent CNC axes: 3–5 axes Drive power: 5–10 kW Coolant tank: 100–200 litres EQUIPMENT Coolant filtration system Universal applicability for different tool types and geometries High flexibility through CNC programming and adaptable clamping devices Process reliability thanks to integrated cooling and filtration system Easy maintenance due to modular design and central supply units

Condition: good (used), Year of construction: 2002, Clampable cutter head type (max.) 460 mm Cutter head weight (max.) 150 kg Mounting disc diameter for cutter heads (Ø) 360 mm Mounting cone for cutter heads Nominal diameter Ø 58,227 mm travel -z axis 200 mm diagram-drawing enlargement ±10 - ± 500 µm weight of the machine ca. 2,3 t dimensions of the machine ca. 2 x 1,5 x 2,03 m In the manufacturing process for spiral-toothed bevel gears, the quality of the gear cutting gear cutting tools used plays a decisive role. Particularly in high gear cutting quality and a long service life can only be achieved with precisely can only be achieved with precisely adjusted cutterheads. The Oerlikon cutterhead setting and testing device CS 200 enables quick and easy setting of the individual knives and simple adjustment of the individual Fsdjw N S E Ajpfx Al Sjgh knives, it checks the position and documents the measurement results. The measuring sequence on the CNC-controlled testing device is partially automated: The individual actions for carrying out the actions for carrying out the sequence are displayed on the screen via the operator guidance. The positioning of the individual knives in the cutter head and the height of the knife tips is largely automatic thanks to a special sequence and is simultaneously documented by means of a run-out diagram. A subsequent measuring sequence checks the radial position of the inner and outer cutting edges of all knives in the cutterhead. If individual test parameters on the knives do not correspond to the the tolerance specifications, this can be individually repositioned. The combination of semi-automated setting sequence, operator-guided set-up actions and automatic operator-guided set-up actions and automatic measuring sequence, cutterheads can be can be set conveniently, quickly and with high precision. Operator-guided setting and test sequence - Graphic display of the cutter head design and the measurement results with tolerance check - Instructions for the operator in plain text Instructions for the operator in plain text (without coded information) - Simple assignment of the measurement results to the knives - Documentation of the setting and measurement results via printer- Setting and test sequence suitable for ARCON®, RSR, Spirapid, SPIRON®, TRI-AC® types - Interface for neutral data

Year of construction: 2002, condition: used, max. wheel diameter 275 mm gear width 55 mm max. module 6 Fgjdjgtvbpjpfx Al Sjh min. module 1,5 control Sinumerik 840C tooth width 5,5 mm spiral angle 0/60 ° max. number of teeth 120 min. number of teeth 5 transmission ratio max. 1:10 transmission ratio min. 1:1 spindle speeds max. 110 mm blade head turning speeds 20-110 1/min total power requirement 100 kW weight of the machine ca. 16700 kg dimensions of the machine ca. 5200x2300x2400 mm