Beli Alzmetall Ac25 - 501 bekas (879)

Kondisi: hampir baru (bekas), Fungsionalitas: berfungsi sepenuhnya, kapasitas pengeboran: 50 mm, mesin dalam kondisi seperti baru, dengan desain dudukan kotak yang sangat stabil. Harga ditawarkan sesuai dengan kondisinya. Mohon tidak ada permintaan dari perorangan! Blodpfozhi Siex Ad Rjk

Kondisi: baru, Tahun pembuatan: 2026, nomor mesin/kendaraan: PRJ069841, ALZMETALL bench drill Drilling capacity in steel: 14mm Short taper spindle MK2, spindle stroke: 80mm, throat: 190mm, column diameter: 65mm, machine table usable area: 300x240mm, with T-slots 2 x 12mm x 80mm, spindle-to-table distance min. / max. 75/357mm, machine table height adjustment via hand crank, machine baseplate usable area: 300x240mm, with T-slots 2 x 12mm x 80mm, spindle-to-baseplate distance min. / max. 437/437mm, manual feed, machine height without options: 825mm, net weight: 83 kg. - Infinitely variable speed 230-4000 rpm Bljdpfjlub Htjx Ad Rjk Standard features: 5" TFT LCD display with touch function: manual input of target spindle speed, actual speed display, integrated drilling depth indicator with touch zero-point transfer, virtual depth gauge on the display, machine status and warning messages in the display, service information, selectable operating languages DE/EN/FR/ES/IT/NL/RU Single-phase motor 230 Volt, 50 Hz, plug pre-assembled, cable length 2m, three separate buttons for forward - reverse - stop, spindle brake function, spindle guard with electrical interlock, lockable main switch, mushroom head emergency stop button (latching), infinitely variable speed adjustment via potentiometer, protection class IP54, spindle guard with electrical interlock, finish: DD textured paint signal white RAL 9003, PANTONE 7545c, black Delivery time: ex stock Waiblingen Beinstein.

Kondisi: bekas, Tahun pembuatan: 1985, Drilling capacity in steel (diameter): 40 mm Bodpfxjyqvlce Ad Rjlk Throat depth: 300 mm Drilling stroke: 180 mm Speed range: 55–1,450 rpm Feed rate: 0.1–0.3 mm/rev Machine no.: 5112 Table size: 620 x 470 mm Spindle taper: MT 4 (Metric 4) - Spindle speeds infinitely variable via intermediate gear - 3 feed rates: 0.1 - 0.2 - 0.3 mm/rev - Coolant system - Thread cutting device - Drive: 400 V, 1.4 / 2.2 kW - Required space approx. W 620 x H 1900 x D 950 mm - Weight approx. 450 kg The technical data are provided by the manufacturer/operator and are therefore non-binding for us. Prior sale reserved; only our terms and conditions apply. About us: - Over 400 own machines in stock - More than 15,000 m² storage area, crane capacity 70 t - Over 10,000 accessory items for your workshop If you wish to sell machines, production lines, or your business, please contact us. For more offers, visit our website. Inspections by appointment are possible. We look forward to your visit. Your Markus Hirsch Team

Kondisi: belum diuji (bekas), Tahun pembuatan: 1996, bohrparameter-001 Bjdpfszb Raijx Ad Rslk

Kondisi: bekas, Tahun pembuatan: 2008, Mesin Bor Radial Cepat Alzrapid 32 Bsdpfszhbl Usx Ad Relk Dengan dudukan alat MK4 Umpan pinol, Perangkat ulir, Manual pengoperasian,

Kondisi: bekas, Box Column Drilling Machine, Geared Drilling Machine ALZMETALL Type AB 40 ST Production Drill Serial No. 750 Year of manufacture: 1994 Drilling capacity: 40 mm Spindle taper: MK 4 – short quill Throat depth: 325 mm Quill stroke: 200 mm Table size: 740 x 460 mm Drill head height adjustment: 700 mm Distance spindle to table: max. 1015 mm Spindle speed: 56 – 2500 rpm, 12 speed gears Automatic feed: 0.15 – 0.2 – 0.3 – 0.36 mm/rev Motor power: 4 kW Power supply: 380V, 50 Hz - Spindle speed via 12-step gear transmission - Drilling and tapping equipment with CW/CCW rotation - Electric foot switch for reversing direction (CCW) for tapping interruption - Rapid approach via hydraulic quill movement - Semi-automatic operating sequence: rapid approach – feed – rapid return - Drill head height adjustment via handwheel Bsdpfxeza Hzge Ad Rjlk - Table height adjustment via handwheel (table height: 740 to 1170 mm) - Coolant system - Control cabinet mounted at rear of machine - Mounted on steel plate (1300 x 750 x 15 mm) with machine feet - Quick-action drill chuck METABO 3–16 mm - Operating manual and electrical diagram Overall height with drill head fully raised: 2750 mm Required space (L x W x H): 1400 x 850 x 2300 mm Weight: 1250 kg Good condition

Kondisi: bekas, Tahun pembuatan: 2007, en-001 Blsdpfxjvithzo Ad Rjk

Kondisi: bekas, Tahun pembuatan: 1989, Technical details: Drilling capacity in steel (diameter): 28 mm Throat depth: 285 mm Drilling stroke: 165 mm Drilling capacity in cast iron: Ø 35 mm Spindle taper: MT 3 Spindle speed: 65 - 1,750 rpm / 4x stepless Feed: 0.1; 0.2; 0.3 mm/rev manual/automatic Max. distance spindle/table: 80 - 680 mm Table clamping surface: 500 x 370 mm Table rotatable: 360° Drilling table adjustment: 600 mm vertical Column diameter: Ø 130 mm Total power requirement: 7.5 kW Bedpfxju Idkzj Ad Rjlk Machine weight approx.: 273 kg Machine dimensions (LxWxH) approx.: 0.9 x 0.6 x 1.9 m The machine is capable of thread cutting, with left/right rotation selectable via foot switch and/or depth stop. The table is tiltable and height-adjustable.

Kondisi: bekas, Tahun pembuatan: 1986, 1 Bedpswiwwfjfx Ad Rjlk

Kondisi: bekas, Tahun pembuatan: 1968, Technical details: Drilling capacity in steel (diameter): 40 mm Throat depth: 380 mm Drilling stroke: 240 mm Spindle taper: MT 5 Spindle speed: n/a rpm Feed rate: 0.1 / 0.14 / 0.2 / 0.28 / 0.4 mm/rev (manual + automatic) Max. distance spindle/table: 200 – 800 mm Table clamping surface: 540 x 730 mm Table swivels: 360° Drill table adjustment: 600 mm (manual) Column diameter: Ø 220 mm Base plate clamping area: W: 510 x L: 510 mm Total power requirement: 4.0 kW Machine weight approx.: 1300 kg Machine dimensions approx. LxWxH: 1.2 x 0.95 x 2.35 m Bodpfx Ajvpfzysd Rjlk Operation via control panel and/or footswitch Mechanical thread cutting Including vice

Kondisi: bekas, Fungsionalitas: berfungsi sepenuhnya, ALZMETALL AX 2/S adalah mesin saudari yang lebih kompak dari seri ALZSTAR. Ini adalah mesin bor meja atau tiang profesional yang sangat presisi (tergantung pada alasnya), terutama digunakan di bidang mekanika presisi, bengkel pelatihan, laboratorium, dan bengkel yang menuntut standar tinggi. Sementara ALZSTAR 30/S dirancang untuk pekerjaan berat dengan diameter bor hingga 30 mm, AX 2/S mengutamakan ukuran yang ringkas dan kelincahan untuk diameter bor yang lebih kecil, tanpa mengorbankan stabilitas khas Alzmetall. Bledszdy Rzspfx Ad Rsk Data Teknis Singkat Fitur Nilai / Spesifikasi Kapasitas pengeboran (pada baja St 60): 23 mm Pengeboran ulir (opsional): max. M14 (baja) / M16 (cor) Taper spindle: MK 2 (spindle pendek) Perjalanan spindle (sumbu Z): 100 mm Jarak spindle ke kolom: 250 mm Diameter kolom: 90 mm Meja mesin (permukaan): 370 x 300 mm Feed: Manual Daya motor: 0,6 / 0,95 kW Kecepatan spindle (tanpa tingkat): Varian 1: 125 – 2.400 rpm Varian 2: 225 – 4.300 rpm Berat mesin: sekitar 180 kg (berat murni mesin) Fitur Penting & Detail Perlengkapan Penggerak mekanis variabel: Seperti pada model yang lebih besar, kecepatan spindle diatur tanpa tingkat secara nyaman melalui roda pengatur mekanis (variator) saat mesin beroperasi. Panel digital: Kecepatan spindle ditampilkan secara digital pada layar yang mudah dilihat di kepala mesin. Ukuran ringkas: Dengan berat sendiri sekitar 180 kg, mesin ini jauh lebih ringan dibanding ALZSTAR 30/S (sekitar 260 kg) dan masih relatif mudah dipindahkan atau diangkut. Fitur keamanan: Termasuk saklar utama yang bisa dikunci dengan pelindung motor, tombol darurat NOT-HALT yang bisa dikunci, serta pelindung spindle yang aman secara elektrik sebagai standar. Catatan: Dijual tanpa garansi dan jaminan. Kami tidak bertanggung jawab atas kelayakan fungsi mesin. Penjualan dilakukan dengan pengecualian segala bentuk tanggung jawab atas cacat material sejauh diperbolehkan oleh hukum.

Kondisi: bekas, Tahun pembuatan: 2009, nomor mesin/kendaraan: PRJ 040485, Fungsionalitas: berfungsi sepenuhnya, kecepatan rotasi (maks.): 4.300 rpm, kecepatan rotasi (min.): 225 rpm, berat keseluruhan: 260 kg, Perlengkapan: Penandaan CE, ALZMETALL ALZSTAR 30/S adalah mesin bor tiang yang kokoh, presisi, dan tahan lama, sangat cocok untuk bengkel teknik, pelatihan, maupun industri. Mesin ini termasuk lini "Start-Up" Alzmetall yang lebih ekonomis, namun tetap menawarkan kualitas industri khas pabrikan tersebut. Berikut adalah data teknis utama dan fitur perlengkapan: Data Teknis Fitur Nilai / Spesifikasi Kapasitas bor (baja St 60) 30 mm Kapasitas bor (cor GG 20) 30 mm Kemampuan tapping maks. M 16 (baja) / M 20 (cor) Kepala spindle MK 3 (spindle pendek) Stroke spindle (sumbu Z) 140 mm Jarak spindle ke tiang 293 mm Diameter tiang 115 mm Meja mesin (bidang kerja) 515 x 360 mm (dengan alur T) Jarak spindle ke meja min. 132 mm / maks. 724 mm Pengoperasian feeding manual Daya motor 1,0 / 1,6 kW Kecepatan putar spindle (tanpa langkah) sesuai opsi: 225 – 4.300 rpm atau 100 – 1.800 rpm Berat mesin ±260 kg Fitur Standar & Sorotan: Bsdpfx Aezdqdlod Relk - Penyetelan kecepatan tanpa langkah: Kecepatan dapat diatur secara mekanis (variator) tanpa langkah, memastikan penyesuaian optimal terhadap material dan diameter mata bor. - Indikator digital kecepatan: Kecepatan spindle saat ini ditampilkan jelas di bagian depan mesin. - Perangkat tapping: Saklar pembalik terintegrasi memungkinkan pergantian cepat antara putaran kanan dan kiri. - Fitur keselamatan: Dilengkapi tombol E-STOP (jamur), pelindung motor, dan pelindung spindle dengan pengaman listrik sebagai standar. Catatan: Dijual tanpa garansi. Kami tidak bertanggung jawab atas fungsi operasional mesin. Penjualan dilakukan dengan pengecualian seluruh tanggung jawab atas cacat fisik, sejauh diizinkan oleh hukum.

Kondisi: bekas, Dijual mesin bor merek Alzmetall yang berfungsi penuh. Silakan hubungi saya jika ada pertanyaan. Bjdpfxezcg Rtj Ad Rolk

Kondisi: bekas, 1 mesin bor tiang bekas Merek: Alzmetall Tipe: AB 3 ESV Kapasitas pengeboran: Ø 32 mm 3 umpan bor otomatis Blodpfx Adeyqr Dhj Rsk Taper spindle: MK 3 Jarak hidung spindle ke meja: 545 mm Jangkauan: 290 mm Stroke spindel: 160 mm Diameter tiang: Ø 220 mm Dimensi: 1150 x 650 x 2000 mm Berat: 850 kg

Kondisi: bekas, Tahun pembuatan: 1993, 1 mesin bor tiang bekas Merek: Alzmetall Tipe: AB 36 Tahun pembuatan: 1993 Bsdpfx Aoy H Dfwod Relk Taper spindle: MK 4 Kapasitas bor pada baja St 60: 34 mm Kapasitas bor pada besi tuang GG 20: 40 mm Kapasitas pengeboran maksimal pada St 60: 40 mm Kemampuan tap pada ST 60: M 24 Kemampuan tap pada GG 20: M 30 Jarak spindel ke tiang: 330 mm Diameter tiang: 145 mm Stroke spindle: 160 mm dengan auto-feed pengeboran total kebutuhan daya: 1,3 kW Tinggi mesin: 1865 mm Berat sekitar 470 kg

Kondisi: sangat baik (bekas), Tahun pembuatan: 1999, Drilling capacity (steel): 18 mm Drilling capacity (cast): 23 mm Tapping capacity (steel): M14 Spindle taper: MT 2 Quill stroke: 100 mm Spindle extension: 250 mm Column diameter: 90 mm Power: 0.55 kW Bljdpfx Adjkytxzj Rjk Spindle speed: 125 – 2400 rpm / 225 – 4300 rpm

Kondisi: bekas, High-Performance Drilling Machine ALZMETALL Type Abomat 20 Bsdpfx Adogd Ipks Rslk Production Drill Press Serial No. 449 Year of Manufacture: 1995 Drilling capacity in steel (ST 60): 25 mm Drilling capacity in cast iron (GG 20): 30 mm Spindle taper: SK 40 - M16 Throat depth: 280 mm Quill stroke: 500 mm Max. spindle distance: 685 mm Min. spindle distance: 185 mm Table size: 490 x 400 mm Spindle speed: 2,000 rpm Automatic feed: 224 mm/min Rapid traverse: 4.5 m/min Feed motor power: 0.18 kW Rapid traverse motor power: 0.75 kW Drill spindle motor power: 1.5 kW Power supply: 400 V, 50 Hz - Production drilling machine with one spindle speed and one feed rate - Current spindle speed: 2,000 rpm - Current feed rate: 224 mm/min - 2 operating modes: manual and automatic - Electrically adjustable drilling head height - Central lubrication - Control cabinet mounted at the rear of the machine - Mounted on a steel plate (700 x 650 x 40 mm) with precision height adjustment Space requirements (L x W x H): 1,200 x 700 x 2,530 mm Weight: approx. 900 kg In good condition

Kondisi: seperti baru (mesin pameran), Tahun pembuatan: 2025, Fungsionalitas: berfungsi sepenuhnya, ALZMETALL AX 4 / SV Column Drilling Machine 3KW Manufacturer: Alzmetall Blsdpfx Aoy S Axgsd Rok Model: AX 4 / SV Condition: NEW Year of manufacture: 2025 Drilling capacity in steel E335 (St 60): 55 mm Thread cutting capability: Steel E335 (St 60): M 42 Cast iron EN-GJL-200: M 56 Short spindle MK 4 Spindle stroke: 140 mm Usable throat depth: 300 mm Column diameter: 145 mm Machine table, usable surface: 615 x 430 mm Distance spindle-table min./max.: 150/735 mm T-slots, number x width x spacing: 2 x 14 x 224 mm Feed rates: 0.1 + 0.3 mm/rev Machine height: approx. 1850 mm Net weight: approx. 380 kg Infinitely variable drive Motor: 1500 rpm Power: 3.0 kW Spindle speed (rpm): 70-2400 Standard equipment: - Main switch with lockable motor protection - Mushroom-head emergency stop button (latching) - Infinitely variable speed adjustment - Digital speed display - Feed overload protection - Protection class IP 54 - Spindle guard with electrical lockout - Paint finish: DD textured coating signal white RAL 9003, PANTONE 7545c, black - Machine oil: initial fill; supplied loosely in container Available options: - LED machine lamp - Thread cutting device with soft start (from 2025) - Coolant system in base - Digital drilling depth indicator - Fine depth adjustment 0.1 mm

Kondisi: baru, ALZMETALL Column Drilling Machine Alzstar 23 S Manufacturer: Alzmetall Model: Alzstar 23 S Condition: NEW Drilling capacity (steel E335, St 60): 23 mm Thread cutting: - Steel E335 (St 60): M14 - Cast iron EN-GJL-200 (GG20): M16 Short taper spindle MK 2 Spindle stroke: 100 mm Throat depth: 250 mm Bedpfxey S Avls Ad Relk Column diameter: 90 mm Machine table, usable area: 370 x 300 mm T-slots, number x width x spacing: 2 x 14 x 160 mm Spindle-table distance min./max.: 140 / 670 mm Feed: Manual Machine height (without options): approx. 1770 mm Net weight: approx. 175 kg Drive: Infinitely variable Motor: 750 / 1500 rpm Power: 0.6 / 0.95 kW Spindle speed (rpm): 225–4300 Standard equipment: - Mushroom-head emergency stop (locking) - Reversing switch for clockwise/counter-clockwise - Motor protection switch - Stepless speed adjustment - Digital speed display - Protection class: IP 54 - Power plug (pre-installed, cable length 2 m) - Spindle guard with electrical safety interlock - Paint finish: DD-structural paint, light grey RAL 7035, anthracite RAL 7016

Kondisi: baru, ALZMETALL AX3/SV Column Drilling Machine NEW Manufacturer: Alzmetall Model: AX3 SV Condition: New Drilling capacity steel: 40 mm Tapping capacity steel: M24 Cast iron: M30 Quill taper: MK 3 (Morse taper 3) Quill stroke: 120 mm Usable throat depth: 293 mm Column diameter: 115 mm Machine table: 515 x 360 mm Spindle-table distance: 117/701 mm T-slots: 2 x 14 x 224 mm Feed: 0.1 + 0.2 mm/rev Machine height: approx. 1,840 mm Net weight: approx. 270 kg Drive: stepless Motor: 750/1500 rpm Power: 1.0 / 1.6 kW Spindle speed: 80-1125 rpm Additional equipment: - Reversing switch - LED machine lamp - Tapping device - Coolant system B Blsdpfoy S Auzox Ad Rek Immediately available from stock

Kondisi: baru, As a machinery dealer based in Offenburg, we offer new and used ALZMETALL bench and column drilling machines. You can find an overview of our drilling machines on our website. If you have any questions, feel free to call us. Here we offer the new series of ALZMETALL column drilling machines with TOUCH display: ALZMETALL AX3 iTRONIC-V Column Drilling Machine Condition: NEW Standard equipment: 7” TFT - LCD display with touch function: - Manual input of target spindle speed - Actual speed display - Integrated drilling depth display with touch zero reset - Virtual drilling depth scale in the display - Machine status indicators and warning notifications on the display - Service information - Selectable operating language: DE/EN/FR/ES/IT/NL/RU - Infinitely variable speed adjustment using control lever - Spindle guard with electrical interlock - Three separate buttons for clockwise, counterclockwise, and stop - Mushroom-head emergency stop button (locking) - Lockable main switch - Clockwise and counterclockwise operation via contactor control - Control voltage 24 Volt - Protection class IP 54 - Finish: DD textured paint signal white RAL 9003, PANTONE 7545c, black Technical data: Manufacturer: ALZMETALL Type: AX 3 iTronic-V Drilling capacity steel E 335 (St 60) (mm): 40 Tapping steel E 335 (St 60): M 24 Blodpfjy S Auuox Ad Rek Tapping cast iron EN-GJL-200 (GG 20): M 30 Short spindle: MK 3 Spindle stroke (mm): 120 Usable throat (mm): 293 Column diameter (mm): 115 Machine table (mm): 515 x 360 T-slots (mm): 2 x 14 x 224 Distance spindle/table (mm): 117 / 701 Feed: 0.1 + 0.2 mm/rev Machine height (mm): approx. 1840 Drive: stepless Speed range (rpm): 160 - 2250 Motor (kW): 1.45 / 1.9 Weight (kg): approx. 270 Special equipment included: - Foot switch in addition to the tapping device Additional options available: - LED machine light - Coolant unit B - Technology calculator in display - Maximum drilling depth indicator Optional accessories: - Machine vice size 3/125mm BB type BON3 - Machine vice size 4/160mm BB type BON4 - Quick-action drill chuck Supra 1-13mm or 3-16mm MK3 Available at short notice. Collection in person. Forklift available. Shipping also possible. Subject to errors, changes, and prior sale. Didn't find the right machine? Feel free to contact us.

Kondisi: baru, Tahun pembuatan: 2023, Alzmetall Alztronic i16 bench drill with 5" touch display Condition: New Call us to inquire about special discounts or send us your inquiry by email with your contact details and we will get back to you. 5" or 7" display with scratch-resistant glass surface - Optimal readability for the operator - Simple and intuitive operator guidance with pictograms - Manual input of spindle speed – setpoint - Speed display – actual value - Integrated drilling depth display with touch zeroing (start of drilling) - Virtual drilling depth scale in the display - Machine status indicators and warnings on display (safety) • Main switch, lockable - Clockwise and counterclockwise operation via contactor control - Control voltage 24 V - Service information - Selectable operating language: DE/EN/FR/ES/IT/NL/RU - Spindle brake function – only ALZTRONIC (safety) - Adjustable display timeout Standard equipment: - 230 V AC motor, 50 Hz - Infinitely variable speed adjustment - Reversing switch for clockwise/counterclockwise operation - Spindle guard with electrical interlock - On/Off button with lockable emergency stop cover - Plug connector, cable length 3 m - Paint finish: textured light grey RAL 7035, anthracite RAL 7016, white aluminium RAL 9006 Drilling capacity in steel E335 (St 60): 16 mm Thread cutting in steel E335 (St 60): M12 Drill chuck taper: MK 2 Bledpfx Ajy S Atksd Rok Spindle travel: 80 mm Throat depth: 190 mm Column diameter: 65 mm Feed: manual Drill head height adjustment by handwheel Net weight: approx. 83 kg Infinitely variable speed control Motor: 0.54 kW Spindle speed (rpm): 100–2000 Optional: - Röhm Supra drill chuck, 1–13 mm or 3–16 mm - Alzmetall machine stand Collection by customer. Forklift available. Shipping also possible. Errors, changes and prior sale reserved. More Alzmetall bench and pillar drills always in stock!

Kondisi: baru, ALZMETALL Alztronic 16 Bench Drilling Machine Condition: new Availability: Immediately available from stock Offenburg Drilling capacity in steel E335 (St 60): 16 mm Tapping in steel E335 (St 60): M 12 Drill chuck taper: MK 2 Spindle stroke: 80 mm Throat depth: 190 mm Blodpfx Asy S Atdod Rok Column diameter: 65 mm Manual feed Drill head height adjustment by handwheel Net weight: approx. 83 kg Infinitely variable speed adjustment Motor: 0.54 kW Spindle speed (rpm): 100–2000 Optional special equipment: - Digital drilling depth display - Machine lamp Optional accessories: - Röhm Supra drill chuck, 1–13 mm or 3–16 mm - Alzmetall base table

Kondisi: baru, Column drilling machine Alzmetall Alzstar 40/S Manufacturer: Alzmetall Model: Alzstar 40/S Condition: new Drilling capacity in steel E335 (St 60): 40 mm Short spindle: MK 3 Spindle stroke: 120 mm Bljdpfoy S Ar Tjx Ad Rjk Throat clearance: 293 mm Column diameter: 115 mm Machine table, usable surface: 514 x 360 mm T-slots, number x width x spacing: 2 x 14 x 224 mm Distance spindle-table min./max.: 117/701 mm Feed: manual Machine height without options approx.: 1840 mm Net weight approx.: 270 kg Spindle speed rpm: 160-2250

Kondisi: baru, Alzmetall Alzstar 30/S Column Drilling Machine Manufacturer: Alzmetall Model: Alzstar 30/S Condition: new Drilling capacity steel E335 (St 60): 30 mm Thread cutting: Steel E335 (St 60): M16 Cast iron EN-GJL-200 (GG20): M20 Short spindle MK 3 Spindle stroke: 140 mm Throat depth: 293 mm Column diameter: 115 mm Machine table, usable area: 514 x 360 mm T-slots, number x width x spacing: 2 x 14 x 224 mm Distance spindle-table min./max.: 132/724 mm Bedpfx Adjy S Ar Hj Rslk Feed: manual Machine height without options: approx. 1770 mm Net weight: approx. 260 kg Stepless drive Motor speed: 750 / 1500 rpm Power: 1.0 / 1.6 kW Spindle speed: 225-4300 rpm