Used Prism Milling Cutters for sale (11,727)

Condition: used, Year of construction: 1990, travel distance X-axis: 850 mm, travel distance Y-axis: 630 mm, travel distance Z-axis: 500 mm, This Hermle UWF 1200 H - CNC universal milling machine is being auctioned online in our industrial auction/machinery auction for mechanical engineering companies—machine park clearance and restructuring. Itjdjxpcumepfx Aabjn

Condition: good (used), Universal milling machine STANKO 676P Longitudinal table travel X: 400 mm Vertical table adjustment Y: 380 mm Upper arm transverse adjustment Z: 250 mm Clamping surface of the vertical table clamping surface: 250 x 630 mm Spindle mount: MK 4 Quill stroke: 60 mm Swivel angle of the vertical head: +-90° Table size of the rigid angle table: 800 x 250 mm Distance between horizontal milling spindle and rigid angle table: 80 - 460 mm Distance between vertical milling spindle and rigid angle table: 0 - 380 mm Distance between vertical vertical spindle and column: 125 - 375 mm 16 spindle speeds horizontal: 50 - 1630 rpm. 16 spindle speeds vert.: 60 - 2040 rpm. Ijdotrybgopfx Aabjtn 16 longitudinal and vertical feeds: 13 - 395 mm/min. 16 headstock feeds: 13 - 395 mm/min. Rapid traverse all axes: 0.935 m/min. Drive power: 2.2 kW Weight approx.: 1.4 t used, in good condition

Condition: used, Manufacturer: Prvomajska Model: AG-400 CNC Control system: Schneider Operation is unstable; the PLC is working, but the machine does not start Spindle power: 9 kW Table size: 800 × 500 mm Travel ranges: X-axis: 600 mm Y-axis: 400 mm Isdpfxewfrris Aabetn Z-axis: 400 mm

Condition: ready for operation (used), Year of construction: 1998, operating hours: 52,715 h, Control Unit Brand HEIDENHAIN Model TNC 430 Iodjxpkmkopfx Aabstn Main Drive Number of axis 5 Movement X-Axis Movement 800 mm Y-Axis Movement 600 mm Z-Axis Movement 500 mm A-Axis Movement +90° to -90° C-Axis Movement 360° Additional Equipment measuring probe not included This 5-axis Hermle C 800 U was manufactured in 1998. A CNC universal milling machine featuring a swivel rotary table with a 280 mm diameter, it operates with a Heidenhain TNC 430 CNC and a spindle cone of SK 40. With 67,073 operating hours, it remains in good condition. If you are looking to get high-quality milling capabilities, consider the Hermle C 800 U machine we have for sale. Contact us for more information about this machine. Application Types Milling

Condition: used, Year of construction: 2019, operating hours: 17,529 h, turning length: 500 mm, spindle motor power: 30,000 W, General Year of manufacture: 2017 Operating hours: 17,529 Control: SINUMERIK 840D sl Maximum workpiece dimensions Workpiece length up to 500 mm Maximum cutting radius mm 200 Stroke over center mm 25 Maximum clamping diameter mm 100 Tip diameter mm 30 – 60 Working area Longitudinal stroke Z-axis mm 602 Longitudinal stroke Z-/W-axis mm 602 / 602 Cross stroke X-axis mm 140 Cross stroke X-/U-axis mm 140 Steady Z3-axis depends on the chuck Workpiece C21-/C22-axis degrees 360 Tool Outer diameter mm 230 Tool holder Quick-change system Bearing diameter of tool drum in the front bearing mm 660 * 790 Chuck holder Cylindrical mm 180 Chuck diameter up to mm 260 Workpiece spindle bearing diameter in the front bearing mm 170 Guidance system for machining units Rolling guides with rollers, size 45 Feed drives Cross slide adjustment W-axis, Z-axis 100% duty cycle Nm 18 / 18 Tool feed U-axis, X-axis 100% duty cycle Nm 18 / 18 Steady Z3-axis 100% duty cycle Nm 10.5 Vise right Z4-axis 100% duty cycle Nm 10.5 Circular feed workpiece C21- axis, C22-axis 100% duty cycle Itsdpfswgnigex Aabsn Nm 18 / 18 Axis speed Feed/rapid traverse speed longitudinal W-, Z-, and Z3-axes m/min 0 - 40 Feed/rapid traverse speed transverse U-axis, X-axis m/min 0 - 20 Feed/rapid traverse speed Z3-axis (steady rest) m/min 0 - 40 Circular feed of workpiece C21- axis, C22-axis rpm 0 - 60 Cutter drive Power per unit (nominal / maximum) kW 15 / 30 Cutting speed m/min 120 - 255 Tool torque Nm 1500

Condition: used, Year of construction: 2013, Control Heidenhain iT Plus Dimensions (L x W x H) 6,55 x 3,46 x 2,40 m weight of the machine 14.500 kg CNC Turning- and Milling Center | DMG GILDEMEISTER - CTX 310 Itodpfx Asxpizgeaben Additional equipment: - C-Axis The machine is in good condition. Please refer to further technical details in the attachement of the offer. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #Tags: CTX310 | CTX-310

Condition: used, This Seeber FUW 250 milling machine is being auctioned online in our industrial/machinery auction for machine engineering companies – equipment fleet clearance & restructuring. Itsdpfoxnqdaox Aabon

Condition: excellent (used), Year of construction: 2009, functionality: fully functional, travel distance X-axis: 6,000 mm, travel distance Y-axis: 1,200 mm, travel distance Z-axis: 2,000 mm, rapid traverse X-axis: 30 m/min, rapid traverse Y-axis: 30 m/min, rapid traverse Z-axis: 30 m/min, spindle speed (max.): 5,000 rpm, Used STS moving column milling machine model Performance with: - X-axis travel 6000 mm - Y-axis travel 1200 mm - Z-axis travel 2000 mm Ijdexn Axispfx Aabotn - Selca 4045D CNC unit - 2 clamping tables - Table size each: 3500 x 2000 mm - Automatic head 1°x1° - Spindle speed: 5000 rpm - Tool magazine with 40 positions - OMR rotary table, full 4th axis, 1000 x 1000 mm - High-pressure coolant system through spindle: 20 bar - Standard accessories included Free 12/24 month payment extension

Condition: good (used), Year of construction: 1995, functionality: fully functional, Control: SIEMENS 840D Solution Line (electrical overhaul 2017) x-travel: 7.000 mm y-travel: 2.100 mm z-travel: 1.500 mm z-travel vertical: 1.200 mm Universal milling head (orthogonal design) Swivel range of milling head holder: 340 °Grad Swivel range of milling head: 180 °Grad Mounting cone for tools with steep taper: SK50 spindle truning speed range: 22 - 2.240 U/min Feed rate x,y and z-axis: 2 - 12.000 mm/min Rapid traverse rate x,y, and z-axis: 12.000 mm/min Drive power 100% ED / 60 % ED: 31,5 / 39 kW Clamping plate dimensions of clamping plate: 6.000 x 1.500 x 300 mm Number of T-slots: 6 T-slot distance: 250 mm max. load: 10 t/m² Equipped with: NC dividing head PEISELER AWU 650 with vertical faceplate, diameter 650 mm automatic universal milling head, orthogonal, (Completely refurbished 2017, rarely used since then) SIEMENS electronic handwheel 3 support tables Iodpfx Aaexphm Uebjtn various prism support blocks MAYFRAN hinged belt conveyor Coolant system with paper belt filter Work platform moving in the X direction, protective cover with viewing window The machine is in exceptionally good condition and can be viewed while under power. In 2017, a new SIEMENS 840D Solution line control system was installed, all drive motors and the control cabinet were replaced at the same time.

Condition: used, Year of construction: 1990, Used 20 mm Cold Forming Machine Manufacturer: Asahi-Okuma (Japan) Year of manufacture: 1990 Model: AF-2020-5 Station No.: 5 Itedpfexlac Hox Aabsn Cutting diameter: Max. 20 mm (tensile strength below 70 kg/mm²) Cutting length: 210-15 mm Projection length: Punch side projection: Max. 52 mm Main die x depth: 115 mm diameter x 250 mm Punch die x depth: 85 mm diameter x 150 mm Cutting die x depth: 80 mm diameter x 80 mm Ejector die diameter: 30 mm diameter Cutting die diameter x thickness: 80 mm x 40 mm Die center distance: 140 mm Crank stroke: 380 mm Transfer stage length: 210 mm Head piece net diameter: 45 mm diameter. Punch net diameter: 100 mm diameter. Force: 250 tons Production capacity: 100 units/min (max.) Main motor: 75 kW (6/8/12 poles) Machine weight: 75 tons Machine dimensions: 9.1 x 3.45 m

Condition: used, Year of construction: 2006, functionality: fully functional, Description Headstock and tailstock manually adjustable. Ideally suited for machining one crankshaft type with different strokes. Workpiece Max. center-to-center distance of the outer main bearings: 920 mm Max. roll arm length (½ stroke + counterweight radius): 195 – 270 mm Iodpfx Ajwm Elfjabstn Max. number of machineable bearings: 8 main bearings, 6 pin bearings Main bearing diameter, min. / max.: 30 / 88 mm Pin bearing diameter, min. / max.: 30 / 84 mm Bearing width, min.: 18.5 mm Stroke, max.: 140 mm Bearing pitch, min.: 29.5 mm Deep rolling machines Max. deep rolling force: 30,000 N Headstock Main drive motor power: 20 kW Deep rolling speed: 120 rpm / 60 rpm Leveling rolling speed: 30 min¯¹ Machine Weight including auxiliary units: approx. 13,800 kg Dimensions including integrated control cabinet and hydraulics (L/W/H): approx.: 4.5 x 2.5 x 2.2 m Max. machining height: 1,100 mm

Condition: used, Year of construction: 1995, x-travel 650 mm Itsdpfxevza Dts Aabsn y-travel 410 mm z-travel 410 mm Control Mitsubishi Meldas 50 M max. turning speeds 6.000 min/-1 tool taper SK 40 In our opinion, the machine is in good used condition and can be inspected under power by appointment. Accessories, tools and clamping devices shown are only included in the scope of delivery if this is noted in the additional information. Subject to changes and errors in the technical data and information as well as prior sale!

Condition: used, Year of construction: 2000, operating hours: 10,000 h, travel distance X-axis: 600 mm, travel distance Y-axis: 500 mm, travel distance Z-axis: 450 mm, This Mikron - UM600 - 3-axis universal milling machine is being auctioned online in our industrial auction / machinery auction for engineering companies – workshop clearance & restructuring. Itedpfoxnp Tyex Aaben

Condition: excellent (used), Professional Ø100 mm x 6 mm disc milling cutter with indexable inserts mounted on an SK40 arbor – Made in Germany. Ideal for fast and precise slotting, cutting, and side machining of steels, cast iron, aluminum, and other structural materials. The cutter is equipped with multi-edge inserts – ensuring high machining performance and long tool life. The set is in good working condition, ready for immediate use on a CNC machining center. • Cutter diameter: Ø100 mm • Cutting width: 6 mm • Indexable inserts • Mount: SK40 taper • Condition: used – 100% functional • Manufacturer: Made in Germany. Itsdpfxoxllclj Aaben

Condition: good (used), Year of construction: 1972, functionality: fully functional, overall weight: 1,200 kg, x- travel: 290 mm y-travel: 170 mm z-travel: 310 mm Itedpfjxphmusx Aabon Milling spindle number of milling spindle turning speeds: 16 milling spindle turning speeds: 40-2000 U/min inner taper of milling spindle: ISO 40 max. diameter of the vice bore: 25 mm dimensions: 1066 x 1048 x 1330 mm

Condition: refurbished (used), Year of construction: 1979, Waldrich Coburg GM 600/30000 CNC Gantry Milling Machine (1979, retrofitted in 2004) Operation System SIEMENS 840; Technical Specifications: Fixed table length 36,000 mm, Fixed table width 6,000 mm; Distance between columns with covers 6,900 mm, without covers 7,100 mm; Gantry travel 30,000 mm; Cross rail travel 3,100 mm; Milling heads (right and left) travel on cross rail 7,400 mm; Vertical travel of right and left rams 1,000 mm; Gantry work feeds 0–6,000 mm/min; Gantry rapid feed 10,000 mm/min; Milling heads (right and left) work feeds 0–3,000 mm/min; Milling heads (right and left) rapid feed 3,000 mm/min; Vertical rams (right and left) work feeds 0–2,000 mm/min; Vertical rams (right and left) rapid feed 2,000 mm/min; Cross rail fine positioning 0–750 mm/min; Cross rail rapid feed 1,000 mm/min; Fine positioning for work axes 5 mm/min; Main spindles (right and left) speed range on 3 steps 4–475 rpm; Taper of milling spindles ISO 60; Manual 12-head changing system with 8 sets of milling heads; Diameter of milling-spindle nose 221.44 mm; Fixed Table PMM GM600-30000 4,500 × 30,000 mm. Itedpfxoxnc Ukj Aabon Machine dimensions L × W × H 43,000 × 12,000 × 10,000 mm; The lot is dismantled and stored in 8 stacks as seen in pictures. The lot was carefully dismantled, and main connection points were marked with red coded labels. The larger parts of the machines are strategically placed at the location to allow easy loading access. The lot contains a total of 16 tables, each with approximate dimensions of L = 6,000 mm and W = 2,000 mm. Most of the machine components are stored in a separate room and are laid out over a total length of approximately 30,000 mm.

Condition: used, Year of construction: 2017, turning length: 500 mm, spindle motor power: 30,000 W, General Year of manufacture: 2017 Control: SINUMERIK 840D sl Maximum workpiece dimensions Workpiece length up to 500 mm Maximum cutting radius mm 200 Stroke over center mm 25 Maximum clamping diameter mm 100 Tip diameter mm 30 – 60 Working area Longitudinal stroke Z-axis mm 602 Longitudinal stroke Z-/W-axis mm 602 / 602 Cross stroke X-axis mm 140 Cross stroke X-/U-axis mm 140 Steady Z3-axis depends on the chuck Workpiece C21-/C22-axis degrees 360 Tool Outer diameter mm 230 Tool holder Quick-change system Bearing diameter of tool drum in the front bearing mm 660 * 790 Chuck holder Cylindrical mm 180 Chuck diameter up to mm 260 Workpiece spindle bearing diameter in the front bearing mm 170 Guidance system for machining units Rolling guides with rollers, size 45 Feed drives Cross slide adjustment W-axis, Z-axis 100% duty cycle Nm 18 / 18 Iodpfxewgndke Aabetn Tool feed U-axis, X-axis 100% duty cycle Nm 18 / 18 Steady Z3-axis 100% duty cycle Nm 10.5 Vise right Z4-axis 100% duty cycle Nm 10.5 Circular feed workpiece C21- axis, C22-axis 100% duty cycle Nm 18 / 18 Axis speed Feed/rapid traverse speed longitudinal W-, Z-, and Z3-axes m/min 0 - 40 Feed/rapid traverse speed transverse U-axis, X-axis m/min 0 - 20 Feed/rapid traverse speed Z3-axis (steady rest) m/min 0 - 40 Circular feed of workpiece C21-axis, C22-axis rpm 0 - 60 Cutter drive Power per unit (nominal / maximum) kW 15 / 30 Cutting speed m/min 120 - 255 Tool torque Nm 1500

Condition: used, Year of construction: 2001, turning length: 400 mm, turning diameter: 420 mm, spindle speed (max.): 5,000 rpm, bar passage: 60 mm, total height: 1,850 mm, bar diameter (max.): 60 mm, overall weight: 5,500 kg, controller manufacturer: SIEMENS, controller model: SINUMERIK, power: 44 kW (59.82 HP), number of spindles: 2, space requirement length: 2,450 mm, space requirement width: 1,400 mm, CONTROLS .. CNC controls SIEMENS SINUMERIK BASIC FUNCTIONS .. design principle: inclined bed .. number of spindles: 2 .. - counter spindle: yes .. number of turrets: 2 .. number of c-axes: 2 .. number of y-axes: 1 WORKING RANGE TURNING .. swing diameter (max): 420 mm .. turning diameter (max): 200 mm .. bar diameter (max): 60 mm .. worpiece length max.: 400 mm MAIN SPINDLE .. spindle revolutions (max): 5000 /min .. spindle bore diameter: 60 mm .. c-axis: yes COUNTER SPINDLE .. spindle revolutions (max): 5000 /min X/Z SLIDE .. number of tool positions (total): 14 .. - rotation speeds (max): 6000 /min .. - drive power: 5.5 kW TOOL MAGAZINE .. number of positions: 14 Itedpexpdt Rsfx Aaben ELECTRICAL SPECIFICATIONS .. total power consumption: 44 kW .. mains voltage: 400 V .. mains frequency: 50 Hz DIMENSIONS / WEIGHTS .. space requirements -left/right-: 2450 mm .. space requirements -front/back-: 1400 mm .. total height: 1850 mm .. total weight approx.: 5500 kg ATTACHMENTS (TURNING) .. chip conveyor: yes Accessories - Chip conveyor - Iemca Master 880R bar feeder

Condition: used, Universal tool milling machine DECKEL type FP 1 Machine no. 51265 Year of manufacture approx. 1967 Itodpfsghtvaex Aaben Travel X: 300 mm Y: 150 mm Z: 340 mm Table size: 600 x 210 mm Spindle taper: SK 40 - S20 x 2 Spindle speed: 40-2000 rpm, 16 steps Motor power: 1.0 and 1.6 kW, pole-changeable Power supply: 380 Volt, 50 Hz - Power feed on X and Z axes - Spindle speed via 2 motor speeds and 8 gear stages - Quill travel on vertical milling head 60 mm - Fixed angle table - Separate control cabinet Required space L x W x H: 1100 x 1100 x 1600 mm Weight: 650 kg Good condition

Condition: good (used), Year of construction: 1972, functionality: fully functional, overall weight: 1,200 kg, x-travel: 290 mm y-travel: 170 mm z-travel: 310 mm Iodjxphlwepfx Aabetn Millung spindle number of milling spindle turning speeds: 16 milling spindle turning speeds: 40 - 2000 U/min inner taper of milling spindle: ISO 40 max. diameter of the vice bore: 25 Vertical milling head inner taper of milling spindle: ISO 40 spindle turning speed range: 50 - 2.500 U/min max. diameter of the vice bore: 25 dimensions: 1.100 x 1.100 x 1.660 mm

Condition: refurbished (used), Year of construction: 1974, Forest CNF 160 CNC Boring and Milling machine (1974, retrofitted in 2004) Itodoxnc Rlspfx Aabon Machine – CNC Axes: X (Column Saddle travel) 12,500 mm, Y (Headstock Saddle Vertical travel) 3,500 mm, Z (Boring Shaft travel) 1,250 mm, W (Quill travel) 1,000 mm, W+Z (Cumulative travel) 2,250 mm. Rotary Table – CNC Axes: W2 (Table travel) 3,200 mm, B (Table rotation) 0–360°. Rotary Table Surface: 2,500 x 3,500 mm. Rapid Feed Axes: X max. 5,000 mm/min, Y max. 5,000 mm/min, Z max. 3,000 mm/min, W max. 3,000 mm/min, W2 max. 2,000 mm/min, B max. 1 rot/min. Work Feed Axes: X 1–2,000 mm/min, Y 1–2,000 mm/min, Z 1–1,000 mm/min, W 1–1,000 mm/min, W2 1–200 mm/min, B 0.1–1 rot/min. Milling Spindle Range (S – Gearbox with 4 mechanical ranges): Range #1 2.5–80 rpm, Range #2 80–160 rpm, Range #3 160–320 rpm, Range #2: 320 - 630 rpm. Boring shaft taper bore: ISO 50, Boring shaft diameter: 160 mm. FANUC 18M Contouring Numeric Control. FANUC made feed axes motors. FANUC made spindle motor. FANUC made drive system for axes and spindle motors. Overall size: W x H x L = 14,000 x 10,000 x 20,000mm. Machine weight: approx - 85,000 kg. Oil Chiller: Schimpke Model DK38-V from 1999. Coolant System: Yes. Chip Conveyor: No

Condition: used, Year of construction: 2019, operating hours: 17,349 h, turning length: 500 mm, spindle motor power: 30,000 W, General Year of manufacture: 2017 Operating hours: 17,349 Control: SINUMERIK 840D sl Maximum workpiece dimensions Workpiece length up to 500 mm Iedpfowgnfujx Aabotn Maximum cutting radius mm 200 Stroke over center mm 25 Maximum clamping diameter mm 100 Tip diameter mm 30 – 60 Working area Longitudinal stroke Z-axis mm 602 Longitudinal stroke Z-/W-axis mm 602 / 602 Cross stroke X-axis mm 140 Cross stroke X-/U-axis mm 140 Steady Z3-axis depends on the chuck Workpiece C21/C22 axis degrees 360 Tool Outer diameter mm 230 Tool holder Quick-change system Bearing diameter of tool drum in the front bearing mm 660 * 790 Chuck holder Cylindrical mm 180 Chuck diameter up to mm 260 Workpiece spindle bearing diameter in the front bearing mm 170 Guidance system for machining units Rolling guides with rollers, size 45 Feed drives Cross slide adjustment W-axis, Z-axis 100% duty cycle Nm 18 / 18 Tool feed U-axis, X-axis 100% duty cycle Nm 18 / 18 Steady Z3-axis 100% duty cycle Nm 10.5 Vise right Z4-axis 100% duty cycle Nm 10.5 Circular feed workpiece C21- axis, C22-axis 100% duty cycle Nm 18 / 18 Axis speed Feed/rapid traverse speed longitudinal W-, Z-, and Z3-axes m/min 0 - 40 Feed/rapid traverse speed transverse U-axis, X-axis m/min 0 - 20 Feed/rapid traverse speed Z3-axis (steady rest) m/min 0 - 40 Circular feed of workpiece C21- axis, C22-axis rpm 0 - 60 Cutter drive Power per unit (nominal / maximum) kW 15 / 30 Cutting speed m/min 120 - 255 Tool torque Nm 1500

Condition: excellent (used), machine/vehicle number: 77WSX22305E5A-135, BENZ - MONO WSX 05 - 90° angle head Ijdpoxphlqofx Aabstn Mounting: HSK-A100 Collet: ER25-A (clamping range: 0.5–16 mm) Max. torque: 30 Nm Max. speed: 8,000 min⁻¹ Transmission ratio: 1:1 Angle head: 360° adjustable Weight: approx. 8 kg The angle head was used on a MAG HÜLLER HILLE - NBH6+ but can also be adapted or fitted to other machines.

Condition: used, Year of construction: 1978, Droop and Rein LFAS130KE Milling Machine Itsdpexnc N Isfx Aabjn Axes: X (Table travel) 3,000 mm, Y (Cross-Rail vertical travel) 1,000 mm, Z (Milling Head Saddle on Cross-Rail travel) 1,500 mm, U (Boring Bar vertical travel) 300 mm. Axes Feeds: X min 20 mm/min, max 2,000 mm/min; Y min 20 mm/min, max 2,000 mm/min; Z min 20 mm/min, max 2,000 mm/min; U manually. Note: The X, Y, Z axes are equipped with linear encoders. On the control panel there is a display unit (DRO) for the X, Y, Z axes. For the U axis, direct viewing on a graduated ruler is used. Moving Table Load: max. 20,000 kg/m (uniform distribution on table surface). Moving Table usable surface: 4,000 × 1,600 mm. Moving Table total surface: 4,900 × 1,600 mm. Distance between Table and Cross-Rail: max. 1,200 mm. Machine Weight: approximately 50,000 kg. Overall Dimension of the Machine: L × W × H = 10,000 × 5,000 × 5,300 mm. Machine was made by DROOP & REIN, Germany, in 1978. Accessories include a 4-position at 90-degree Milling Head. Retrofitted in 2000 Coolant System: Yes. Not functional.

Condition: used, Year of construction: 2008, functionality: fully functional, Turning / milling center with counter spindle with 10 CNC axes (X1, X2, Z1, Z2, Y1, Y2, B1, B2, C1, C2) Control: FANUC 31:iA Main Spindle Power: 15/11 kW bar material dia.: 51 mm spindle revolution: 5.000 min-1 Counter Spindle Power: 11/7,5 kW bar material dia.: 51 mm spindle revolution: 5.000 min-1 Turning and milling spindle Power: 7,5/3,7 kW Turning and milling spindle speed: 12.000 min-1 Isdsxphk Tepfx Aabjtn max. rotation length turret bottom: 1.005 mm Slide cross X1 / X2 / Z1 / Z2 / B2: 455 / 222,5 /1.090 / 1.005 / 1.008 mm Slide cross Y1 / Y2: +/- 70 / +20, -50 mm Swivel range B1 axis: +/- 95 ° Linear rack magazine incl. support robot CNC support steady rest Coolant cyclone filter system incl. 2 pcs. coolant pumping spindle oil cooler