Used Horizontal Broaching Machine Broaching Machine for sale (65,596)

Condition: ready for operation (used), Year of construction: 2011, machine/vehicle number: 65352, functionality: fully functional, travel distance X-axis: 3,765 mm, travel distance Y-axis: 1,585 mm, travel distance Z-axis: 170 mm, number of axes: 3, number of slots in tool magazine: 12, TECHNICAL DETAILS Milling spindle Number of controlled axes: 3 Tool holder: ISO 30 Motor power: 1.7 kW Drilling unit Drilling tool available: Yes Vertical drilling spindles: 10 pcs. Tsdpfx Acjzuwt Is Tob Table and working area Type of milling table: Flat table Table length: 3,750 mm Table width: 1,560 mm Working area X-axis: 3,765 mm Working area Y-axis: 1,585 mm Working area Z-axis: 170 mm Z-axis travel max.: 324 mm Material clamping system: Pneumatic Tool changer and control Number of tool changer positions: 12 pcs. MACHINE DETAILS System/Software: BiesseWorks Vacuum pump Brand: Busch Type: MM1322AVM Capacity: 360 m³/h Connection diameter: 60 mm Oil-free: Yes Dimensions & Weight Dimensions (L x W x H): 5,600 x 2,250 x 2,550 mm Installed length: 6,465 mm Installed width: 4,794 mm Installed height: 2,550 mm Shipping weight: 2,500 kg Shipping packages: 2 pcs. EQUIPMENT Tools included Vacuum pump Busch MM1322AVM Safety mat CE marking

Condition: ready for operation (used), Year of construction: 2002, overall weight: 7,000 kg, center height: 160 mm, distance between centers: 2,000 mm, controller model: Siematic Rack PC 840, positioning accuracy: 0.001 mm, Automatic reamer tool grinding machine / reaming cutter grinding machine! For grinding the chip chamber and chip face on round reaming tools. TECHNICAL DETAILS Tooth length: 1,700 mm Center distance: 2,000 mm Center height: 160 mm Resolution X-axis: 0.001 mm Tedpfx Acozt Si Ue Tjb Resolution Y-axis: 0.001 mm Resolution Z-axis: 0.001 mm Resolution W-axis: 0.001 mm MACHINE DETAILS Axis control: 4 axes Control system: Siemens Rack PC 840 Processor: Pentium 3 Program memory: 20 GB Operating system: Windows 2000 Weight: 7,000 kg EQUIPMENT Simultaneous machining via 2 handwheels

Condition: used, functionality: fully functional, Manufacturer: Arthur Klink Year of construction: ca.1960 Type: horizontal broaching machine Model: RH 10-50 Machine. No.: 241 Weight: 3.700 KG General / technical data: used horizontal hydraulic internal broaching machine in a good condition according to age with manual tool feeder in heavy design Clearing stroke: 1,500 mm Tractive force: 10,000 kg (100KN) Mounting in the drawbridge: Ø 85mm Cylindrical Through-hole in the clamping table: Ø 100mm Workpiece clamping surface: Ø 460mm Workpiece diameter: max. approx. 750mm (due to the tool trough of the tool feeder) Cutting speed: hydraulically infinitely variable from 1.0 m/min to 7 m/min Return speed: hydraulically infinitely variable from 5 m/min to 30 m/min Space requirement of the machine: (w x d x h) approx. 6500mm x 950 mm x 1,400 mm (without working area) Power supply: 380Volt 50 HZ Connected load: 8kw Equipment: - the machine has a mechanical hydraulic control for the clearing & return stroke - the machine has an integrated coolant system - the machine has a manually operated tool feed system - The broaching carriage with the pulling head holder is guided flat on both sides. - The machine has an adjustable tractive force limiter Accessories - 1 universal pulling head for flat shafts from 3mm to max. 25mm wide - Adapter sleeve for drawbridge from Ø 85mm to Ø 63mm Remarks: The machine can be used for the production of keyways with flat broaching tools, as well as for profile broaching. In combination with the machine bed of the machine and the stable broaching tool feeder, the machine is well suited for heavy profile broaching tools. The machine is used and is in very good condition for its age. The machine is in our warehouse and can be inspected under power. The machine is currently not technically and visually refurbished, but can be used immediately. Pulling heads for profile broaching are mostly available used on request depending on DIN standard, dimensions and stock. Direct contact details and further information can be found in the attached PDF document Tjdpor A Hdgsfx Ac Teb

Condition: good (used), Year of construction: 1980, machine/vehicle number: 20007, Offer 23326 Technical specifications: - Broaching tool width up to 10 mm - Broaching tool length up to 1000 mm - Pulling force: 1.5 t - Working speed: 4 m/min - Working / operating height: 1000 mm Todpfjyfgc Ijx Ac Tjb - Drive: 400 V / 1.5 kW - Required space: approx. W 1500 x H 1000 x D 400 mm - Weight: approx. 200 kg

Year of construction: 1999, condition: like new (used), functionality: fully functional, Manufacturer: Arthur Klink Year of construction: 1999 Type: horizontal broaching machine Model: RIW 10x1600x400 Weight: 2.700 KG General / technical data: horizontal hydraulic internal broaching machine in mint condition with tool holding system ideal for the use of flat broaching tools. Broaching stroke: 1.600mm Tractive force: 10,000 kg (100kN) Mounting in the drawbridge: Ø 85mm Cylindrical Through-hole in the clamping table: Ø 100mm Workpiece diameter: max. 400mm (due to the machine body of the tool trough) Cutting speed: hydraulically infinitely variable from 1.0 m/min to 9 m/min Return speed: hydraulically infinitely variable from 1 m/min to 24 m/min Space requirement of the machine: (w x d x h) approx. 6,400 mm x 1,450 mm x 1,600 mm (without working area) Power supply: 400Volt 50 HZ Connected load: 9kw Equipment: - the machine has an electric control for the clearing stroke movement with manual operation and automatic sequence - the machine has an integrated coolant system - the machine has a tool holding system for flat broaching tools (no feed) - The broaching carriage with the pulling head holder is equipped with a flat guide on both sides Accessories - 1 universal pulling head for flat shanks from 3mm to max. 25mm wide and a maximum pulling force of 10kN (10,000kg) - Complete machine documentation and CE declaration of conformity Remarks: The machine is ideal for the production of keyways. Due to the connection with the stable machine bed of the machine and the broaching tool holding system, the machine is particularly suitable for quick and easy use of flat broaching tools. Tjdpfx Acor A Hcbs Teb The machine has been used very little and is in mint condition. The machine is available for inspection in our warehouse and is ready for demonstration under power. Our direct contact details and further information about the machine can be found in the attached PDF document

Condition: good (used), Year of construction: 2004, functionality: limited functionality, travel distance X-axis: 560 mm, travel distance Y-axis: 610 mm, travel distance Z-axis: 625 mm, rapid traverse X-axis: 60 m/min, rapid traverse Y-axis: 60 m/min, rapid traverse Z-axis: 60 m/min, controller manufacturer: Okuma, controller model: OSP-E100M, workpiece length (max.): 600 mm, workpiece width (max.): 710 mm, workpiece weight (max.): 400 kg, total height: 2,760 mm, total length: 4,535 mm, total width: 2,415 mm, table width: 400 mm, table length: 400 mm, table load: 400 kg, overall weight: 10,000 kg, spindle speed (max.): 8,000 rpm, distance table center to spindle nose: 710 mm, spindle motor power: 15,000 W, spindle nose: BT40, number of spindles: 1, number of slots in tool magazine: 40, input voltage: 400 V, type of input current: three-phase, Equipment: chip conveyor, rotational speed infinitely variable, Okuma Space Center MA400HA Horizontal Machining Centre Machine Type: CNC Horizontal Machining Centre Todpfx Ajwcd Evec Tob Year: 2004 Control: OSP-E100M Axes: 4 No. of Pallets: 2 Condition: Good - There is an issue with the pallet changer. Includes Cromar Swarf Conveyor Coolant Filtration System Technical Specifications Pallets: 2 Size of Pallets: 400 x 400mm X Axis Travel: 560mm Y Axis Travel: 610mm Z Axis Travel: 625mm B Axis Travel: 360 Deg Rapid Traverse: 60m/min Spindle Centre to Pallet Top: 50 - 660mm Spindle Nose to Pallet Centre: 85 - 710mm Max Pallet Load: 400kg Max Workpiece Dimensions: 600 x 710mm Tool Pockets: 40 Spindle Taper: BT40 Spindle Power: 15kW Spindle Speed: 8,000rpm Machine Dimensions: 4535 x 2415 x 2760mm Machine Weight: 10,000kg Notes: *Specifications are given in good faith but not guaranteed*

Condition: used, Year of construction: 2007, operating hours: 13,400 h, functionality: fully functional, travel distance X-axis: 450 mm, travel distance Y-axis: 775 mm, travel distance Z-axis: 450 mm, rapid traverse X-axis: 60 m/min, rapid traverse Y-axis: 60 m/min, rapid traverse Z-axis: 60 m/min, feed length X-axis: 450 mm, feed length Y-axis: 500 mm, feed length Z-axis: 450 mm, feed rate X-axis: 10 m/min, feed rate Y-axis: 10 m/min, feed rate Z-axis: 10 m/min, nominal power (apparent): 72 kVA, torque: 65 Nm, controller manufacturer: Indramat, controller model: MTC 200, total height: 3,000 mm, total length: 6,000 mm, total width: 5,500 mm, table width: 700 mm, table length: 1,100 mm, spindle speed (max.): 16,000 rpm, operating hours of spindle: 13,400 h, coolant supply: 70 bar, distance between spindles: 450 mm, spindle motor power: 28,000 W, number of spindles: 2, number of slots in tool magazine: 100, mount diameter: 63 mm, tool length: 320 mm, tool diameter: 160 mm, tool weight: 8 g, input voltage: 380 V, type of input current: three-phase, Equipment: chip conveyor, documentation/manual, rotational speed infinitely variable, This machine is offered for sale as part of a package that includes two other machines of the same type and with similar operating hours. The advertised price is for the purchase of all three machines, plus a large spare parts package (including two reconditioned spindles), as well as an additional, fourth machine, which the buyer will receive free of charge. Tedpfjzk U Hwex Ac Tjb The machines can be inspected under power at any time by appointment.

Condition: ready for operation (used), Year of construction: 2000, functionality: fully functional, machine/vehicle number: 31-44336, travel distance X-axis: 630 mm, travel distance Y-axis: 630 mm, travel distance Z-axis: 630 mm, workpiece weight (max.): 500 kg, spindle speed (max.): 24,000 rpm, No minimum price – guaranteed sale to the highest bidder! The machine spindle has been completely overhauled! TECHNICAL DETAILS Travel range X-axis: 630 mm Travel range Y-axis: 630 mm Travel range Z-axis: 630 mm Pallet size: 400 × 500 mm Number of pallets: 6 Pallet change time: 9 s Max. workpiece size: 720 × 800 mm Max. workpiece weight: 500 kg NC rotary table: B-axis B-axis rotation range: 360,000 × 0.001° B-axis rotation speed: 40 rpm Tool holder: SK 63 Max. tool diameter: 150 mm Max. tool length: 227 mm Tedezwd Htopfx Ac Teb Max. tool weight: 12 kg Spindle speed: 45–24,000 rpm Spindle torque: 48/72 Nm Spindle drive: 30 kW Feed rate X/Y/Z: 1–60,000 mm/min Rapid traverse X/Y/Z: 60,000 mm/min Feed force: 10,000 Nm MACHINE DETAILS Total connected load: approx. 60 kW Connection voltage: 400 V Mains frequency: 50 Hz Total weight: approx. 12,500 kg EQUIPMENT Chip conveyor Documentation/Manual

Condition: not inspected (used), Forst RF 16 internal broaching machine -WKG 1371- Technical data: Manufacturer: Forst Tedpfshu E N Dsx Ac Tob Type: RF 16 Max. Tractive force: 16t Max. Stroke: 1200mm Max. Cutting speed: 5,6m/min Max. Workpiece diameter: Ø 700mm Max. Tool diameter: Ø 120mm Workpiece seat: Ø 70mm Note: control valve missing

Year of construction: 1963, condition: used, machine/vehicle number: 18135, Broaching Machine – Horizontal Todpfx Acjbrcy Ne Tob Manufacturer: Forst Typ: RIW 100/2200 Force: 100 Tons Stroke: 2.200 mm It is possible to buy the Crane - see offer no Y941

Year of construction: 1965, condition: good (used), functionality: fully functional, machine/vehicle number: 2549, General / technical data: used horizontal hydraulic internal broaching machine in a good condition according to age with manual tool feeder in heavy design clearing stroke: 2.000mm Tractive force: 25,000 kg (250KN) Mounting in the drawbridge: Ø 105mm Cylindrical Tsdpotuuvzofx Ac Teb Through-hole in the clamping table: Ø 125mm Workpiece clamping surface: 440mm x 440mm Workpiece diameter: max. approx. 800mm (due to the tool trough of the tool feeder) Cutting speed: hydraulically infinitely variable from 1.5 m/min to 7 m/min Return speed: hydraulically infinitely variable from 7 m/min to 25 m/min Oil volume: hydraulics approx. 450L / coolant approx. 100L Space requirement of the machine: (w x d x h) approx. 8,400 mm x 1,350 mm x 1,800 mm (without working area) Power supply: 380Volt 50 HZ Connected load: 19kw Equipment: - the machine has a mechanical hydraulic control for the clearing & return stroke - the machine has an integrated coolant system - the machine has a manually operated tool feed system - The broaching carriage with the pulling head holder is guided flat on both sides. - The machine has an adjustable tractive force limiter - Tractive force display Accessories - 1 universal pulling head for flat shafts up to a maximum width of approx. 40 mm - dividing head (see pictures) - Various special fixtures and clamping devices - Machine documentation Remarks: The machine can be used for the production of keyways with flat broaching tools, as well as for profile broaching. In combination with the machine bed of the machine and the stable broaching tool feeder, the machine is very well suited for heavy profile broaching tools. The machine is used and is in good condition for its age. The machine is available for inspection in our warehouse. The machine is new in our stock and is currently not technically or visually refurbished. Pulling heads for profile broaching are available on request, depending on DIN standard, dimensions and stock.

Year of construction: 1971, condition: excellent (used), Horizontal internal broaching machine Arthur Klink RIW 16x1800 Tedpfx Acshpqque Teb -WAG 718- Manufacturer: Arthur Klink Type: RIW 16 x 1800 Year of manufacture: 1971 Max. Tractive force: 16t Max. Stroke: 1800mm Max. Cutting speed: 7m/min Max. Return speed: 25m/min Max. Tool diameter: Ø 95mm Weight: 4,8to

Year of construction: 1985, condition: good (used), machine/vehicle number: 04.2187, Hydraulic indoor broaching machine in technically good condition Manufacturer: Arthur Klink Year of manufacture: 1985 reconditioned Weight: 2t Model: RIW 10 x 1200 x 400 Tjdpfsixntwsx Ac Teb Machine No: 04.2187 Tractive force: 10.000kg at 3m/min clearing speed: hydraulically stepless adjustable from 1m/min to 7m/min return speed: hydraulically stepless adjustable from 7m/min to 30m/min maximum stroke: 1200mm Broaching tool clamping: universal drawing head for flat shanks up to 26mm width maximum workpiece diameter: Ø max. 480mm (due to oil and chip tray) table opening: Ø 70mm power supply: 380 Volt / 50 Hz / 5kW

Year of construction: 1995, condition: used, machine/vehicle number: 20225, Color: green Slighty used! DIN 1415 Impetus electromechanic Tedpebrcmfjfx Ac Tsb

Year of construction: 1991, condition: good (used), machine/vehicle number: nn, Broaching Machine – Vertical Manufacturer: Locher Model: RWIL 10 x 1250 Year of manufacturing: 1991 Force: 10 Tons Stroke: 1.250 mm Area required: approx. 170 x 150 cm With automatic lead Tjdpfx Acefc T Ews Tjb Magnetic chip-conveyor

Condition: good (used), Year of construction: 2005, functionality: fully functional, machine/vehicle number: 255179729, travel distance X-axis: 1,050 mm, travel distance Y-axis: 800 mm, travel distance Z-axis: 880 mm, rapid traverse X-axis: 40 m/min, rapid traverse Y-axis: 40 m/min, rapid traverse Z-axis: 40 m/min, nominal power (apparent): 74 kVA, torque: 525 Nm, controller manufacturer: Mazak, controller model: 640M, workpiece height (max.): 1,000 mm, workpiece diameter (max.): 1,050 mm, workpiece weight (max.): 1,500 kg, total height: 3,200 mm, total length: 6,400 mm, total width: 2,600 mm, table width: 630 mm, table length: 630 mm, table load: 1,500 kg, overall weight: 19,700 kg, spindle speed (min.): 50 rpm, spindle speed (max.): 10,000 rpm, spindle nose: BT 50, number of spindles: 1, number of slots in tool magazine: 80, mount diameter: 50 mm, tool length: 500 mm, tool diameter: 420 mm, tool weight: 30,000 g, Equipment: chip conveyor, documentation/manual, rotational speed infinitely variable, The machine is in full working order. It is being sold due to a new acquisition and lack of space. The table has a swivel axis of 1/360°. Included with the machine are some tool holders, an external coolant drum filter tank with a capacity of approximately 800-900 liters (L/W/H: 1800mm, 800mm, 650mm), a Renishaw MP10 measuring probe system, a grid structure in front of the machine (partially mobile), and 2 pallets measuring 630x630. Machine dimensions L/W/H: approximately 6400mm/2600mm/3200mm. The buyer is responsible for dismantling and removing the machine. The machine can be inspected while powered on. Appointment by arrangement. Todpfx Acezkkdrs Tjb

Condition: refurbished (used), Machine is located at our premises in Burscough. We welcome any inspections prior to sale. Spindle Diameter 4" / 101.6mm Spindle Taper 50 INT Main spindle travel 30" / 762mm Spindle speeds 10 - 1300rpm Vertical Y Travel - 48" / 1219mm Main Motor 25 HP Equipment - Facing head, outer (tailstock) steady Vast amount of tooling, rotary table, angle plates. DRO Pendant control Todpfezwmrljx Ac Teb This machine has undertaken a full machine rebuild and all slides re ground. Exceptional condition

Condition: used, BROACHING MACHINE Todpfet Hr Dfsx Ac Tsb

Condition: excellent (used), Year of construction: 2004, Year 2004 With 8 station Fastem pallet loading system with tombs Tooling & manuals Tsdszxr Twepfx Ac Tjb 12,000rpm 40 ATC DIN40 / Renishaw probing Pallet size 400mm x 400mm

Condition: like new (used), Year of construction: 2008, travel distance X-axis: 700 mm, travel distance Y-axis: 700 mm, travel distance Z-axis: 700 mm, feed rate X-axis: 60 m/min, feed rate Y-axis: 60 m/min, feed rate Z-axis: 60 m/min, nominal power (apparent): 68 kVA, controller manufacturer: HEIDENHAIN iTNC 530, workpiece height (max.): 1,000 mm, workpiece diameter (max.): 800 mm, workpiece weight (max.): 600 kg, total height: 2,547 mm, total length: 5,866 mm, total width: 4,196 mm, table width: 500 mm, table length: 500 mm, overall weight: 12,000 kg, spindle speed (max.): 18,000 rpm, spindle motor power: 34,000 W, number of slots in tool magazine: 120, Equipment: chip conveyor, documentation/manual, CNC controller: HEIDENHAIN iTNC 530 Axes: X-axis travel mm: 700 Y-axis travel mm: 700 Z-axis travel mm: 700 Distance spindle nose - table surface mm: 100 - 800 Rapid traverse m/min: 60 Acceleration in the axes m/s2: 6 / 6 / 5 Worktable: Number of pallets: 2 + 5 Table dimensions mm: 500 x 500 Maximum workpiece size (D x H) mm: 800 x 1.000 Max. workpiece weight kg: 600 T-Slot version: DIN 55201-A2 APC time s: 9,5 División estandar Grados: 360º (1º) Spindle: Spindle speed rpm: 18.000 Spindle drive power kW: 34 / 28 Spindle torque Nm: 110 Tool system: Tool holder: HSK-A63 Tool magazine slots: 120 Max. Tool Diameter: 80 Max. Tool Length mm: 550 Max tool weight kg: 12 Chip-to-chip time s: 2,9 Equipment: Electronic Handwheel Chip conveyor Rotating inspection windows Rinsing gun Signal lamp Tool breakage probe 3D quickSET Tedowhdhzspfx Ac Tjb Workarea light CE conformity Cooling device blowing air through spindle center, selectable via M-function MPC – Machine Protection Control Paper band filter Infrared Probe Heidenhain TS640 Blum laser tool measurement Taper clear brushes Blum laser NT Hybrid Round pallet Storage (RPS 5) Measuring probe Heidenhain TS 640 Production package Internal cooling supply 40 BAR Cooling: Cooling through the Spindle Center bar: 40 BAR Tank capacity: 980 High-pressure bar: 40 BAR Machine running times: Under power: 95.210 Operating Time: 44.971 Rated power kVA: 68 Basic machine dimensions / weight: Length mm: 5.866 Width mm: 4.196 Height mm: 2.547 Weight kg: 12.000.

Condition: ready for operation (used), functionality: fully functional, HAHNDORF, Type SEW 52/300mm / Keyway Broaching Machine - Keyway broaching machine suitable for broaching internal keyways in gears, pulleys, or hubs. - Broaching length, stroke max. 300mm - Keyway width max. 32mm - Cutting speed 5 meters/minute - Return speed approx. 5 meters/minute - Clamping plates / table diameter approx. 380 x 300 mm - Smallest bore with special broaching tool 6mm - With broaching inserts 20mm - With standard broaching tool 60mm - Drive power 1.1 KW - Broaching tool with broaching insert - Connection cable Dimensions: L x W x H 1.2 x 0.6 x 1.6 meters / Weight 350 kg Tsdpfx Acezw Idcs Tob Errors and omissions excepted.

Condition: ready for operation (used), Year of construction: 1989, Immediately available from training center: Universal Milling Machine Horizontal - Vertical WMW Auerbach Type FW 250 x 1000 / 2 Year of manufacture: 1989 Table: 1250 x 250 mm Table load capacity: 1250 kg Travel X/Y/Z: 700 / 400 / 500 mm Heidenhain 3-axis digital readout SK 40 Spindle speeds: 55 – 2800 rpm Feeds: 10 – 630 mm/min, stepless Vertical head Horizontal milling device Drive power: 6.3 kW Todpfx Ajzwufaoc Tjb Weight: 2.5 t Offered at EUR 2,000 – plus VAT, ex location

Condition: repair required (used), Year of construction: 1995, machine/vehicle number: VM40067E, travel distance X-axis: 560 mm, travel distance Y-axis: 410 mm, travel distance Z-axis: 410 mm, overall weight: 6,000 kg, spindle speed (min.): 8,000 rpm, Brand / Manufacturer: HITACHI Model: SEIKI VM 40 II Year: 1995 Taper: BT40 Serial number: VM40067E Control unit: SEICOS MY II DIMENSIONS Table dimensions: 760 x 400 mm. TRAVEL X-axis traverse: 560 mm. Y-axis traverse: 410 mm. Z-axis traverse: 410 mm. SPINDLE Spindle speed: 8,000 rpm. Tjdszl S I Uspfx Ac Teb Spindle power: 5.5 / 7.5 kW. WEIGHT AND DIMENSIONS Machine weight: 6,000 Kg. ACCESSORIES 30-station automatic tool changer / ATC Capacity: 30 Tools Nikken 4th axis CNC rotary table (REQUIRES REPAIR) The machine is complete and includes documentation and manuals. The mechanical part is in good condition. The electronics need repair; likely the power supply. (NEEDS TO BE REPAIRED) The machine is complete. It also has documentation and manuals. The mechanical part is good. The electronics need repair. Probably the power supply.

Year of construction: 1994, condition: excellent (used), machine/vehicle number: 04.2398, Manufacturer: Arthur Klink Type: RIW 10 x 1500 x 500 Machine No.: 04.2398 Tsdpogyd T Eefx Ac Tsb Year of construction: overhauled by manufacturer 1994 weight: 3700kg tractive force: 10.000kg (100kN) max. stroke: 1500mm max. workpiece diameter: Ø 500mm clearing speed: infinitely variable from 1m/min to 6m/min return speed: stepless adjustable up to 20m/min power supply: 400V / 50Hz

Condition: ready for operation (used), Year of construction: 2011, functionality: fully functional, machine/vehicle number: 20-19/2010, total length: 5,000 mm, total width: 2,800 mm, total height: 1,200 mm, input voltage: 400 V, Equipment: CE marking, Horizontal washing machine (standalone unit, positioned before the Benteler edger) Tsdpfx Acjzqtk Is Tjb Width: 2600 mm 1 pre-wash zone – spray zone 1 main wash zone with 4 brushes including 1 m inlet/outlet