Used Amada for sale (203)

Condition: excellent (used), functionality: fully functional, overall weight: 1,600 kg, AMADA HA250 automatic bandsaw -Total power consumption: 3.7 kW -Machine weight approx.: 1.6 t -Blade length: 3505x32x1.1 mm (+3 new blades included) -Voltage: 380 V -Cutting diameter: 0 - 250 mm -Cutting capacity: 250x300 mm -Coolant pump -Chip conveyor -Blade cleaning brush Original machine in excellent technical condition, ready for operation. Can be viewed in Głosków, near Warsaw. Knedpfszzph Djx Agrjb Documentation included. Delivery to any location within the country is possible.

Condition: good (used), Year of construction: 2007, functionality: fully functional, controller manufacturer: Amada, control type: CNC control, degree of automation: automatic, actuation type: hydraulic, FOR SALE: Amada HPF 100-3 CNC Hydraulic Press Brake Amada HPF 100-3 – Reliable CNC Press Brake for Heavy-Duty Sheet Metal Work We are offering a used Amada HPF 100-3 CNC hydraulic press brake in [good / fully operational] condition. This is a well-established machine from one of the world’s leading manufacturers of sheet metal machinery, ideal for a wide range of industrial bending operations. Knodpfx Ajy Hf Tpegrjb Key Specifications - Pressing force: 100 tonnes (1,000 kN) - Maximum bending length: 3,100 mm - Distance between frames: 2,700 mm - Stroke length: 200 mm - Throat depth: 420 mm - Open height: 470 mm - CNC control: Amada Operateur / OP 2000 - Number of axes: 7 (Y1, Y2, X, R, Z1, Z2 + crowning) - Motor power: 9–11 kW - Approximate machine weight: 6,750 kg Machine Details - Year of manufacture: 2002 - Condition: Good! - Tooling included Why Buy This Machine? The Amada HPF 100-3 is a robust and precise hydraulic press brake engineered for demanding, high-volume production environments. The Amada CNC control simplifies the programming and storage of complex bending sequences, making it ideal for both batch and repeat production. With a bending length of 3,100 mm and a capacity of 100 tonnes, it covers the majority of industrial sheet metal forming requirements.

Condition: excellent (used), functionality: fully functional, Manufacturer AMADA Model AC255NT Year 2008 Machine type CNC Turret Punch Press Punching force 20 tons / 200 kN Drive system Single AC Servo Drive CNC control AMNC-F X-axis travel 1,270 mm Y-axis travel 1,270 mm Sheet capacity with repositioning Approx. 2,500 × 1,270 mm Knodpfx Aezzn Tlegrsb Max. mild steel thickness Approx. 3.2 mm Max. workpiece weight Approx. 150 kg Max. punching diameter Approx. Ø88.9 mm Turret configuration Depending on configuration: 45 / 51 / 58 stations Auto Index stations Depending on configuration Turret rotation speed Approx. 30 rpm Auto Index speed Approx. 60 rpm Max. punching speed Approx. 370 strokes/min Marking speed Up to approx. 900 strokes/min Punching accuracy Approx. ±0.1 mm Power requirement Approx. 19 kVA Air pressure Approx. 5 bar Machine weight Approx. 12,000 kg Machine dimensions Approx. 4,100 × 2,560 mm, depending on configuration Feeder Automatic sheet feeder / loading system Sheet size for feeder Approx. 1,250 × 2,500 mm fully functionel

Condition: used, Year of construction: 2016, Amada M2 RI 3015 for sale Low hours Full service completed with Amada 4Kw Resonator Dust extraction Chiller Compressor Latest Amada touch screen control Erwin Sick perimeter guards Head clean system Knsdszh E Hvspfx Agrob Really good machine.pplease feel free to contact me if you have any additional questions open this machine. Thankyou for taking time to look at this CO2 laser with rotary system

Condition: used, Year of construction: 2002, functionality: fully functional, stroke length: 2,600 mm, overall weight: 12,000 kg, punching force: 20 t, Amada Europe 2510 machine, in perfect working condition. Sheet metal working dimensions: 3500 mm x 1500 mm, with thicknesses up to 5 mm. Equipped with a fully operational automatic loading system. Kjdjywwztepfx Agronb

Condition: used, Year of construction: 2002, For sale: a professional hydraulic guillotine, AMADA PROMECAM GX 630, manufactured in 2002. Reliable industrial guillotine shears designed for precise sheet metal cutting. Maximum cutting length: 3050 mm, steel thickness: up to 6 mm. The machine is connected and fully operational; it can be inspected, tested, and trial cuts can be performed. New cutting blades were replaced approximately two years ago. The guillotine cuts accurately and cleanly. Key Information: Manufacturer: AMADA PROMECAM Model: GX 630 Year of Manufacture: 2002 Serial Number: C020110 Working Length: 3050 mm Max. Steel Thickness: 6 mm Cutting Force: 197 kN Power: 5.5 kW / 7.5 HP Knsdpfx Aoz A Amgsgrsb Power Supply: 400–415 V / 50 Hz Current: 16 A NC Control and Back Gauge The machine is equipped with an AMADA NC controller, allowing the operator to set the required cutting dimension and the number of cuts. The programmable back gauge, up to 1000 mm, automatically adjusts to the required position, making it convenient to perform repetitive cuts of the same size. Equipment: AMADA NC control system Programmable back gauge up to 1000 mm Hydraulic sheet clamping system Adjustable blade gap according to the thickness of the sheet being cut Front table extension for large sheets Front sheet support Foot pedal control New cutting blades, replaced approximately 2 years ago The machine is connected and fully operational; it can be inspected and tested. If you have any further questions, please do not hesitate to ask.

Condition: excellent (used), Year of construction: 2016, functionality: fully functional, total length: 3,100 mm, Equipment: documentation/manual, STANDARD EQUIPMENT Special beam and column design, implemented as a complex structure, automatically ensures the bending process without requiring separate control or manual adjustment. Kedpfx Agjzcg Ixsrjnb The two upper press cylinders are individually controlled (on the Y1 and Y2 axes), allowing for angle correction in seconds. AKAS safety light curtain (motorized) Electric foot pedal with 2 pedals and panic stop function Electronic selection for “Teach-In” programming of each axis Upper tool clamp, two-sided, with mechanical quick tool clamping Inverter – reduced energy consumption High-speed function, 100 tons up to 3 m Operating hour counter, first oil fill AMNC 3i graphic control with 18.5" touchscreen: Y1, Y2 – left and right press cylinders X1, X2 – front-to-back movement of rear backgauges Z1, Z2 – lateral manual movement of rear backgauges (4-axis) R – simultaneous height adjustment of rear backgauges Operation from memory or directly from USB Tool library (only for AMADA tools) Programming: 2D graphic, numerical angle, and Teach-In programming; 3D graphic with external software Modular tool system (835 mm, 415 mm, and segmented version – optional) DigiPro angle measuring system, infrared Technical data: Press force (kN) – 1,000 Table length (mm) – 3,110 Distance between columns (mm) – 2,705 C-frame opening (mm) – 420 Stroke (Standard) (mm) – 200 Stroke (Long Stroke option) (mm) – 350 Installation height (Standard) (mm) – 470 Installation height (Long Stroke option) (mm) – 620 Table width (mm) – 180 Table height (mm) – 960 Speed (approach) max. (mm/s) – 200 Speed (working) (mm/s) – 15 Speed (return) (mm/s) – 150 Number of controlled axes – 7 Rear backgauge travel range (X-axis) (mm) – 700 Rear backgauge travel range (X-axis, backgauge tilted) (mm) – 1,020 Rear backgauge travel range (R-axis) (mm) – 250 Travel speed (X-axis) (mm/s) – 500 Travel speed (R-axis) (mm/s) – 160 Travel speed (Z-axis) (mm/s) – 1,000 Electrical requirement (kW) – 16.5 Oil tank (liters) – 160 Control – AMNC 3i graphic control with 18.5" touchscreen DigiPro angle measuring system, cable-free – standard accessory Communication options with the machine – USB, UTP network External programmability – with BendCAM software

Condition: excellent (used), Year of construction: 2010, Model Amada HFE M2 103t x 3110 3m, 8 axis Press Brake Year 2010 Very low hours Tonnage 100 tonnes Knodpfx Aozb Eg Rsgrjb Max. Bend Length 3110 mm Stroke Length 200 mm Approach Speed 1 - 100 mm/sec Bending Speed 1 - 10 mm/sec Return Speed 1 - 100 mm/sec Oil Capacity 110L Motor Power Weight 6600 Kg Feissler machine mounted Laser guards ,side and rear interlocked fencing Dimensions Machine Length 4535 mm Machine Depth 2580 mm Machine Height 2680 mm Distance Between Side Frames 2705mm Beam width 60 mm Table height 960 mm Open Height 470 mm Throat Depth 420 mm

Condition: excellent (used), Year of construction: 2007, AMADA LKI MP 300 LOAD UNLOAD AUTOMATION Year 2007 Knsdeyylqbspfx Agreb LKI MP 300M automatic sheet loader / manipulator with 3000mm x 1500mm sheet capacity.

Condition: excellent (used), Year of construction: 2009, operating hours: 8,100 h, AMADA PROMECAM MODEL HFE 5020 50 TONS CAPACITY X 2000 year 2009 specification Knsdpfxjzn Afvo Agrjb 7 AXIS CNC HYDRAULIC DOWNSTROKING PRESS BRAKE CAPACITY 50 TONS CONTROL OP 2000 CNC NO OF AXIS SEVEN X 1 X 2,Y 1 Y 2, R 1 , Z1 & Z2 BENDING LENGTH 2000 mm OPEN HEIGHT 470 STROKE LENGTH 200 THROAT DEPTH 420 MOTOR SIZE 7.5 KW APPROACH SPEED 100 BENDING SPEED 10 RETURN SPEED 100 SERIAL NO.V090090 GUARDING MACHINE MOUNTED ERWIN SICK ELECTRONIC SIDE INTERLOCKED FENCING REAR INTERLOCKED year 2009 price POA specification

Condition: excellent (used), functionality: fully functional, Year of construction: 2019, operating hours: 441 h, machine/vehicle number: LCG3015AJ, laser hours: 228 h, laser power: 2,000 W, sheet thickness (max.): 15 mm, sheet thickness steel (max.): 15 mm, sheet thickness stainless steel (max.): 8 mm, sheet thickness aluminum (max.): 6 mm, sheet thickness brass (max.): 3 mm, sheet thickness copper (max.): 2 mm, table length: 3,070 mm, table width: 1,550 mm, travel distance Z-axis: 100 mm, type of cooling: water, compressed air connection: 6 bar, overall weight: 9,300 kg, total length: 10,136 mm, total width: 2,840 mm, total height: 2,432 mm, Equipment: cooling unit, dust extraction, emergency stop, fume extraction, nozzle changer, safety light barrier, The machine is in as-new condition. It is connected to power; test cuts are possible. Nozzle changer: 8 stations. Kjdox Tft Aepfx Agrjnb

Condition: ready for operation (used), Year of construction: 2009, operating hours: 22,574 h, punching force: 20 t, total height: 2,082 mm, travel distance X-axis: 2,500 mm, travel distance Y-axis: 1,270 mm, overall weight: 13,000 kg, controller manufacturer: AMADA, controller model: AMNC-F, product length (max.): 4,165 mm, This AMADA AC2510 NT + MP 250 was manufactured in 2009. It features a 51-station turret and can handle sheet sizes up to 1270 × 5000 mm, with a maximum thickness of 3.2 mm for mild steel. The machine includes a loading system MP 250, enhancing its efficiency. Consider the opportunity to buy this AMADA AC2510 NT + MP 250 CNC punching machine. Contact us for more information. • Turret type: 51-station turret • Maximum workpiece size: 1270 × 5000 mm • Maximum sheet thickness: 3.2 mm (mild steel) • Maximum sheet weight: 50 kg (feed speed F1); 150 kg (feed speed F4) • Position deviation: ±0.1 mm • Strokes per minute: Punching (5 mm pitch, X-axis) 350; Nibbling (5 mm pitch, Y-axis) 260 • Maximum stroke length: 42 mm • Maximum feed speed: X 80 m/min; Y 60 m/min Knjdpfx Agez Apf Eereb • Turret indexing speed: 30 per minute • Electrical connection power: 19 kVA • Compressed air consumption: 500 l/min • Operating air pressure: 5 bar Additional equipment • Loading system MP 250 included

Condition: good (used), functionality: fully functional, Year of construction: 1999, machine/vehicle number: C 99 03 05, control type: NC control, degree of automation: manual, actuation type: electric, sheet thickness (max.): 6 mm, table height: 860 mm, input voltage: 400 V, input current: 16 A, input frequency: 50 Hz, type of input current: three-phase, overall weight: 6,150 kg, total length: 6,000 mm, total width: 4,800 mm, total height: 1,800 mm, number of support arms: 2, Equipment: CE marking, angle stop, centralized greasing system, documentation/manual, foot remote control, type plate available, For sale is an AMADA GS630 plate shear with additional equipment for efficient and gentle material and part transport. The system is equipped with a lifting table and a conveyor belt, enabling comfortable further transport of the cut components. An integrated scrap collection box ensures the separate collection and removal of the remaining scrap strips. The combination of a high-performance plate shear and automated part handling enables an efficient and material-friendly cutting process while reducing manual handling. Equipment: AMADA GS630 plate shear Robust and reliable AMADA machine technology Lifting table for receiving and transferring the cut components Conveyor belt for automated part transport Scrap collection box for separate collection of scrap strips Gentle removal of finished components Reduced manual effort in part handling Suitable for efficient industrial sheet metal processing Kedpfx Agszxqbasrsnb The combination of lifting table, conveyor belt, and scrap collection box is particularly practical, as cut components can be transported in a controlled manner, and scrap strips are collected separately. This optimizes the material flow and reduces the risk of damage to the manufactured components. Technical data: Manufacturer: AMADA Type: GS630 Machine type: Plate shear Year of manufacture: 1999 Max. sheet metal thickness: 6 mm Lifting table: available Conveyor belt: available Scrap collection box: available Condition: used, good Location: 54576 Hillesheim Inspection and test run possible by arrangement. A video of the machine during production can also be provided. Price and further technical information are available upon request.

Condition: good (used), Year of construction: 2002, functionality: fully functional, punching force: 20 t, TECHNICAL DETAILS Machine capacity: 200 kN (20 t) Air pressure: 5 bar Air flow rate: 250 Nl/min Oil capacity: 160 l Turret speed: 25 rpm Travelling ranges: Machine travel range without repositioning: 1,250 mm x 2,100 mm Processing Knjdpfx Asy Symuegrob Max. sheet thickness with ball bearing table: 6 mm Max. sheet thickness with brush table: 3 mm Max. weight per table: 100 kg Accuracy Punching accuracy (in standard mode): ±0.1 mm Positioning accuracy (repeatability): ±0.07 mm Performance Strokes per minute, feed 25.4 mm: X320 / Y250 Nibbling cycle, feed 1 mm: X920 / Y920 Tools Minimum programmable step: 0.01 mm Number of tools: 31 Max. tool diameter: 88.9 mm Dimensions (L x W x H): 4,890 x 4,370 x 2,137 mm Machine weight: 11,500 kg Note: No tools included, special transport required.

Condition: repair required (used), functionality: limited functionality, Year of construction: 2007, operating hours: 31,489 h, control type: NC control, degree of automation: semi-automatic, laser type: CO₂ laser, laser hours: 22,804 h, laser power: 4,000 W, sheet thickness (max.): 22 mm, sheet thickness steel (max.): 22 mm, sheet thickness stainless steel (max.): 8 mm, sheet thickness aluminum (max.): 6 mm, table length: 3,000 mm, table width: 1,500 mm, working length: 3,000 mm, working width: 3,000 mm, AMADA LC3015 X1 NT – Complete Automated Laser Cutting Cell -The AMADA LC3015 X1 NT is a fully automated CNC laser cutting cell designed for efficient, high-volume sheet metal production with minimal operator intervention. -The installation includes the AMADA LC3015 X1 NT laser machine, an AS LUL 300 X1 automated tower system, a 4 kW Mitsubishi ML40CFX CO₂ resonator, a Riedel industrial chiller, and a Donaldson Torit extraction and filtration system. -Manufactured in Japan in 2007, the machine offers a working area of 3,000 × 1,500 mm and delivers reliable, precision laser cutting performance. -The 4 kW laser is capable of cutting mild steel up to 15 mm, stainless steel up to 8 mm, and aluminum up to 6 mm. -The automated tower system features eight storage cassettes with a load capacity of 3,000 kg each, enabling automatic material loading, unloading, and pallet exchange for continuous production. -A vacuum sheet handling system further improves productivity by reducing manual material handling. -The Riedel dual-circuit chiller provides efficient cooling for both the laser source and optical components, ensuring stable operation. -The Donaldson Torit filtration system effectively removes fumes and metal particles generated during the cutting process, maintaining a clean and safe working environment. -This complete AMADA/Mitsubishi solution combines automation, reliability, productivity, and integrated cooling and filtration systems, making it an excellent choice for demanding industrial manufacturing applications. Knedpszi Uc Nsfx Agrjb

Condition: ready for operation (used), functionality: fully functional, Year of construction: 1996, control type: CNC control, degree of automation: automatic, actuation type: hydraulic, controller manufacturer: TASK, controller model: MASTER 3 AX, working width: 2,500 mm, input voltage: 380 V, input frequency: 50 Hz, type of input current: three-phase, control voltage: 380 V, oil tank capacity: 70 l, overall weight: 5,000 kg, total length: 2,800 mm, total width: 1,800 mm, total height: 2,200 mm, year of last overhaul: 2026, Equipment: CE marking, documentation/manual, finger protection, type plate available, Press brake SCHIAVI - AMADA RG 50-25 Press force 50 tons Table length 2550 mm MASTER TASK 3-axis CNC control Complete with upper and lower dies Ksdpfx Ajygu Aljgronb Fully functional and connected for tests and video

Condition: excellent (used), Year of construction: 2015, Model Amada HFE MK2 5012 50 tons x 1250 , 4 axis CNC Press Brake Year 2015 Tonnage 50 tonnes Max. Bend Length 1250 mm Stroke Length 150 mm Approach Speed 1 - 100 mm/sec Bending Speed 1 - 10 mm/sec Return Speed 1 - 100 mm/sec Oil Capacity 55L Motor Power 6KW Weight 2550 Kg guarding Erwin Sick machine mounted light screen,side and rear interlocked fencing Dimensions Knsdpfx Agjyym Hksrsb Machine Length 2000 mm Machine Depth 2300 mm Machine Height 2300 mm Distance Between Side Frames 1035mm Beam width 60 mm Table height 960 mm Open Height 370 mm Throat Depth 100 mm

Condition: good (used), Year of construction: 2012, Used 3-meter CNC press brake from Amada Type: HD 1003 NT Capacity: 3100 x 100 tons Kodpfx Aezd S A Nogronb Year of manufacture: 2012 Servo-hydraulically controlled AMNC control system X1, X2, R, Z1, and Z2 CNC controlled Akas Fiesller laser safety system

Condition: ready for operation (used), Year of construction: 2021, controller manufacturer: AMADA, controller model: AMNC3i, laser power: 6,300 W, overall weight: 9,100 kg, total height: 2,430 mm, This AMADA ENSIS-3015 AJ Fiber Laser cutting machine was manufactured in the year 2021 in France and has 19829 production hours, of which 8457 are cutting hours. It is equipped with an AMADA AMNC3i control unit. The machine has a laser power of 6,3 kW. Machine Benefits Qualitative Machine Benefits • Very good condition Technical Machine Benefits • Operating time 16882h / cutting time 9469h Extra Information Resonator ENSIS 6000 Kedpfx Agjzvvxrjrjnb Table load max. 920 kg Positioning speed 170 m/min Dimensions Machine Depth 2860 mm

Condition: excellent (used), Year of construction: 2019, We are selling a PCB spot welding system from AMADA, mounted on a workbench. The welding head is type FD 120-A/So, year of manufacture 2019. Knedpfx Ajyhwduogreb

Year of construction: 2010, condition: ready for operation (used), A CNC laser cutting machine Amada is available. Laser type: CO2, laser power: 4kW, connected load: 43kVA, max. sheet dimensions: 1500mm/3000mm, max. sheet thickness steel/stainless steel: 10mm/12mm, control system: Fanuc, power-on hours: 34401h, operating hours: 21713h, cutting hours: 11111h. Including loader and unloader. Documentation available. An on-site inspection is possible. Knodpfjzkldyjx Agreb

Condition: used, Year of construction: 2010, 2 x Amada Astro HDS 1030/NTR press brakes, year of manufacture 2010, and Amada Astro III press brake, year of manufacture 2013. Ksdoy Em Ulopfx Agrenb

Condition: excellent (used), Year of construction: 2019, operating hours: 4,135 h, overall weight: 3,500 kg, table height: 740 mm, coolant pump power: 1,500 W, saw band length: 5,300 mm, saw drive: 5,500 W, Saw from the year of production 2019 / post-show saw - first launch in 2021. Saw in very good technical and visual condition. Technical parameters in the photo above. Kjdpfx Ajuiu Siegronb Price without rollover.

Year of construction: 2015, operating hours: 2,286 h, condition: ready for operation (used), travel distance X-axis: 780 mm, travel distance Y-axis: 450 mm, controller manufacturer: FANUC, controller model: Series 32i-MODEL B, overall weight: 5,000 kg, spindle motor power: 7,500 W, table length: 700 mm, table width: 400 mm, number of axes: 3, This 3-axis AMADA Techster 84 surface grinding machine was manufactured in 2015. It features an X-axis travel of approximately 780 mm and a Y-axis travel of approximately 450 mm. The machine is equipped with a powerful 7.5 kW spindle motor and a magnetic chuck size of 700 × 400 mm. If you are looking to get high-quality grinding capabilities, consider the AMADA Techster 84 machine we have for sale. Contact us for further details. • Control: FANUC Series 32i-Model B • Power Supply: 200 V • Power Supply Type: 3-Phase • Frequency: 50 Hz • Power Consumption: 23 kVA • Full Load Current: 50 A • Spindle Motor: 7.5 kW (Reinforced) • Grinding Wheel Dimensions: Ø 355 × 38–50 × 127 mm • Distance from Spindle Center to Table: Approx. 500 mm • Magnetic Chuck Size: 700 × 400 mm • Magnetic Chuck Pole Pitch: 4 mm • LED Working Area Lighting • Oil-Cooled Grinding Spindle • Compressor Air-Cooled Spindle Cooling • Temperature Control Accuracy: Approx. ±0.1 K • Automatic Touch Probe • Highskip Feed / High Speed Skip • Ethernet (LAN) Interface • Extended Memory Control Module • FANUC Macro B • Programmable Timer for Automatic Start/Stop and Warm-Up • CE Declaration of Conformity • Band Filter System 450 (E3.1) • Coolant Tank Capacity: Approx. 450 L • Filter Fineness: Approx. 20 µm • Emulsion Mist Extraction System 1100 • IFMC Oil Mist Separator • Machine Demonstration Possible • Grinding Spindle Hours: Approx. 2,286 h • General overhaul including geometric overhaul. The machine has only operated for approximately 504 hours since the overhaul Additional Equipment • WinWop Programming Software for Windows • CGS (Complete Grinding Solutions) CAM Software Kjdpozk I Afsfx Agrsnb • Profile Dressing Unit with TPA 100 R • Pre-Dressing Unit VPA 100 R with Motorized Diamond Wheel • Table-Mounted Straight Dresser • Diamond Dressing Arbor R100-40-0.15 CVD • Regrinding Package for Diamond Wheel (Techster 84–104) • 100 mm Diamond Wheel for Pre-Dressing Unit • 700 mm Stop Bar with Prism • MPM Automatic Wheel Balancing System • Grinding Wheel Flange for Techster 64/84 (Ø 355 mm) • Modified Grinding Wheel Guard • Operating Tool Kit (Keys and Extraction Arbor)

Condition: excellent (used), Year of construction: 2016, functionality: fully functional, We are selling a beautiful high-precision surface grinding machine from AMADA. The machine has low operating hours and is available for demonstration under power at the seller’s location. The machine’s enclosure has been completely renewed and it is in very well-maintained condition. Technical Data: Clamping surface: 550 x 200 mm Travel paths: 600 x 250 mm Height to spindle center: 90 to 400 mm Standard magnetic chuck size: 400 x 200 x 100 mm Kodpfxsyx A Nfo Agronb Grinding wheel size: 225 x 25 x 31.75 mm Grinding wheel speed: 500 – 5000 rpm Year of manufacture: Nov. 2016 Installation dimensions and weight: 2700 x 2400 x 1900 mm // Weight: 2400 kg Machine equipment: - FANUC Series 32i-Model B control - Machine enclosure (new) - Flanges - Dressing spindles (profile and groove grinding) - Belt filter - Integrated probe - Linear drive - Automatic balancing MPM - Ball screws and linear drive