Used Agi Srl Polymer A3W for sale (3,253)

Condition: like new (used), functionality: fully functional, Year of construction: 2017, operating hours: 48 h, VERTICAL HYDRAULIC BALER MG 50 TVE Vertical hydraulic baler, model MG 50 T.V.E. 1200x1100x3500h, for compacting and baling soft material scraps such as fiberglass mats or similar. The MG 50 T.V.E. model features a fully enclosed compaction chamber, with both the material loading door and bale extraction door capable of opening. The control panel is mounted on the side of the unit with integrated controls, and is equipped with a 10-meter extension cable to allow for placement away from the baler. The pressing plate is operated by a single cylinder with a 2700 mm stroke and is guided by four lateral sliding rails. Material is loaded from the front. The compaction cycle (press descent and ascent) is automatically activated via push button. - For transportation, the machine is manufactured in three parts: one section is 2000 mm high, one approximately 2300 mm high, and the cylinder, which will be assembled on-site. - Bale tying is preset; it is done manually with the doors open. Via slots in the rear of the chamber, tying can be completed with standard pre-cut wire or strapping. - Bale extraction is carried out by forklift, with special channels at the base for the insertion of fork tines. - The bale extraction door is closed via a handwheel, ensuring safe operation even with elastic materials. A safety microswitch ensures the door is securely closed before pressing. The top loading door features a hydraulic lever closure with machine-mounted controls. - The baler can be placed flush against a wall; only front space is required for material loading and bale removal. - The hydraulic circuit is equipped with an anti-fall safety blocking valve for the press plate. - The machine must be anchored to the floor and is placed above a wash liquid collection tray. • Brand / Model: MG 50 T.V.E. 1200X1100X3500H • Pressing force: 50 tons • Pressing pressure on material: 3.8 kg/cm² • Operating pressure: 220 bar Redjyzr Nmspfx Abpecf • Bale size: mm 1250 x 1150, variable height (min 800 mm, max 1700 mm) • Bale weight: 400–1000 kg, depending on material • Press chamber: mm 1200 x 1100 x 3500 h • Loading opening: mm 1200 x 1800 h • Compactor stroke: 2700 mm, single cylinder • Operation: Automatic by push button • Cycle time (automatic): 130 seconds • Manual ties: No. 5 • Bale ejection: Removal by forklift • Hydraulic power unit: Integrated into press • Motor power: 10 HP – 7.5 kW • Power supply: 380 Volt – 50 Hz • Overall dimensions: mm 2000 x 3500 x 7150 h • Noise level: 78 dB • Press weight: approx. 5000 kg • Certification: CE Condition: • Used hydraulic baler in excellent condition, sold as seen and approved.

Condition: used, Year of construction: 2005, functionality: fully functional, Available for sale fully functional machines are sold separately, ideal for bottling companies seeking high performance, reliability, and quality. Top-quality European machines from leading manufacturers. Reputable Brands – Manufactured by industry-leading companies. Well-Maintained – Regular maintenance. Redpfx Asw R Tgdebpocf

Condition: like new (used), Year of construction: 2014, functionality: fully functional, machine/vehicle number: B42523, Operating principle: The separator separates injection-molded plastic parts from the sprues by means of a rotating screw/roller, based on the different component sizes. Redpfx Aezau Uhjbpecf Condition: Like new!

Condition: good (used), Year of construction: 2000, total length: 6,060 mm, total width: 2,440 mm, total height: 2,590 mm, 20FT ISO CRYOGENIC TANK CONTAINER Manufacturer: Air Liquide Italia S.r.l. ISO Code 6346: 22KW IMO Portable Tank IMO Type 7 Transport Instructions: T75 ADR RID Tank Code: R11.7BN ISO Code 6346: 22KW Max. working pressure: 8 bar Hydr. test pressure: 11.7 bar Design Temperature: min -196 °C Material (Inner & Outer Vessel): High-grade Stainless Steel (X5CrNiN1810 UNI 7500) Rcodpfx Abozd Saujpof Insulation: Vacuum Double Envelope (Excellent current vacuum: 0.052 mbar) Safety Valves: 2x Herose Relief Valves (Set at 8 Bar) (p. 1) Vaporizers: Included & complete with piping Last Inspection: June 9, 2026 (5-Year Periodic Inspection by Bureau Veritas) Next Inspection Due: 12-2028 CSC Validity: Until 12-2028 (p. 1) Approval/Regulations: IMDG, ADR, RID, CSC, US DOT (p. 1) = Further Information = Year of Construction: July 2000 Model Year: 2000 Usable Material: Gas Unladen Weight: 8,300 kg Payload: 25,700 kg GVW: 34,000 kg Technical Condition: good Optical Condition: good Please contact Arne Honingh for further information.

Condition: excellent (used), functionality: fully functional, Year of construction: 2023, machine/vehicle number: REO3M192402161, Used AGI GrainVac VR12, year of manufacture 2023, very good condition. Capacity: up to 66.3 cubic meter per hour Weight: 1,497 kg Hitch Weight: 272 kg Rcjdpfox Hkqajx Abpsf Auger Discharge Height: 4.3 m; Hydraulic Requirements: 2100 PSI at 2 GPM Tractor HP Requirements: 130 HP Transport Width: 2.5 m Transport Height (without exhaust): 2.9 m Transport Length: 3.4 m AGI GrainVacs set all-new standards in efficiency, speed, and durability. By utilizing VR technology, these machines are able to get more capacity and longevity, while reducing noise, debris, and maintenance time. The AGI GrainVac VRX was redesigned from top to bottom. This machine has a capacity of up to 6,000 BPH and was specifically designed to minimize impact and maximize the auger feed. The AGI GrainVac VR12 will clean out your bins faster and easier than ever before. Moving up to 66.3 cubic meter per hour with only 130 HP, this machine ensures that your toughest jobs are taken care of fast. Price Euro 28.000 Euro + VAT, negotiable; ExWorks Craiova, Romania. Irrtum, Anderungen und Zwischenverkauf vorbehalten / Subject to errors, changes and prior sale

Year of construction: 2014, condition: good (used), power: 260 kW (353.50 HP), color: yellow, machine/vehicle number: 214034, Painting-drying booth with semi-vertical air flow "ITALO-1-SV", brand Lackro, manufacturer Eco-Air Technology S.R.L. Italia, year of manufacture: 2014 Cabin interior dimensions: length 14.06 m X width 5.04 m X height 4 m, maximum air flow: 40-45000 mc/h, thermal power: 260 Kw, fuel: diesel, installed electric power: 26 Kw three-phase, tank fuel included, the cabin has a special lighting system, 30 superior filter cells for purification with carbon, dimensions: 500x500x50 mm, side service door, two central hinged doors, trolley for parts, burner chimney on diesel, the cabin has the user and maintenance manual Attention customers: this cabin will be delivered disassembled and loaded for transport from our company headquarters in Oradea. Industrial drying painting cabin "ITALO-I-SV" MOD. ECO – L=14,060 mm x w=5,040 mm x H=4,000 mm with semi-vertical air flow Redjp S Tlhjpfx Abpecf Suction group Suction and filtration unit ECO-SM-5 Maximum air flow at 250 Pa m3/h 40,000-45,000 Maximum thermal power kW 260 VATRA 232 Fuel type DIESEL Installed three-phase electric power: kW (2x7.5) +(2x5.5) Filter cells 500 mm x 500 mm x 500 mm 30 pieces Bag filter Ǿ 280 x 1000 mm pieces 10 Ceiling grid 975 x 1855 mm 28 pieces Generator pre filters 1,000 mm x 800 mm x 50 mm pieces 2 Andreae suction wall filter 0.9 m x 5 m pieces 3 The maximum size of the piece in the cabin L=12 m x w=3 m x H= 3.2 m For any details, do not hesitate to contact me by phone. Price 79.900 Euro + VAT, Ex Works Oradea/Romania Irrtum, Anderungen und Zwischenverkauf vorbehalten / Subject to errors, changes and prior sale / Ne rezervăm dreptul la greșeli, modificări și vânzare We speak English. /Wir sprechen Deutsch./ Beszélünk magyarul. /Nous parlons français/Vorbim romana

Condition: excellent (used), Year of construction: 2019, functionality: fully functional, REF: MM5771 1 x Canellitech Srl automatic inline monoblock filling and crown capping machine for 5L bottles supplied with infeed and outfeed conveyors. Was used for filling 5L bottles and applying push-on caps. Manufacturer - Canellitech Srl Model - 8-1 (8 x filling heads). Date of manufacture - 2019. Rcsdpfxoulpu Sj Abpsf Speed - up to 500 bottles per hour. Has been used very lightly between 2019 and 2023 (2 x days per month). Overall dimensions - 2.7m L x 1.1m W x 2.45m H.

Condition: used, Year of construction: 2010, operating hours: 15,000 h, machine/vehicle number: M312, Technical Specifications and Performance Data This pre-owned monoblock is manufactured by Omar and integrates drying, capsule application, and self-adhesive labeling functions into a compact rotary system designed for professional beverage production. The machine is equipped with a double capsule applicator with rotating heads for precise capsule application and three self-adhesive labeling units for front, back, and neck labels. It is ideal for presenting high-quality wines and can be integrated into a used bottling line or as a stand-alone module in an industrial packaging environment. Manufacturer: Omar Model: Simphony Washer-Dryer Year: 2010 Configuration: Drying module + double capsuling unit with rolling heads + 3 self-adhesive labeling stations (front/back/neck) Bottle Formats: Compatible with Bordeaux and Burgundy bottles Label Application: Pressure-sensitive (self-adhesive) for front, back, and neck Container Type: Glass bottles Format Examples: Reference capacity 0.5 L Application: Suitable for integration into beverage production lines and industrial filling Advanced Automation and Control Systems The monoblock is designed for synchronized operation of the drying, capsuling, and labeling units. The self-adhesive labeling stations ensure precise application with fine adjustment for front, back, and neck labels. The double capsuling stations with rolling heads ensure consistent finishing quality on wine capsuling units. Rapid mechanical adjustments support the changeover from Bordeaux to Burgundy bottles, improving production flexibility in existing bottling lines. Production Line Integration Capability Rcsdpfoygh I Uox Abpjf Designed for in-line operation, the unit interfaces upstream with fillers and capping/closing machines and downstream with inspection and packaging equipment. It adapts to standard conveyor logistics, enabling smooth transfer of glass bottles. Format changes between compatible wine bottle geometries are supported, making the machine suitable for multi-SKU beverage production. Machine Condition and Maintenance History The machine has undergone a thorough restoration, which included purchase, transport, and recommissioning, resulting in a fully functional and reliable second-hand asset. It is ready for use in a production setting, suitable for rapid integration into an existing bottling line. Operational Performance and Versatility Optimized for glass wine bottles, the monoblock combines drying, precise capsule application with rolling heads, and three-point self-adhesive labeling. This configuration supports premium packaging standards and is suitable for wineries and beverage producers seeking consistent presentation quality in an industrial packaging environment. Installation Requirements and Site Preparation The rotary machine’s compact footprint allows for easy placement within typical bottling rooms. Connection to existing conveyor belts and utilities is recommended for optimal integration. The site layout must allow for safe operator access around the guards and clear spaces for format changeovers and routine maintenance. Certification of Conformity and Safety Standards The monoblock includes protective guards around the moving units, with standard operator guards and emergency stop functions typical of modern bottling...

Year of construction: 2021, operating hours: 227 h, condition: excellent (used), functionality: fully functional, The HF machine was used for welding PVC tarpaulins. Maximum welding area: 4 cm x 100 cm. Rcedpfxozbb Tmj Abpof Current welding stamp sizes: 2 cm x 100 cm and 2 cm x 50 cm, in use since 02/2022.

Condition: used, functionality: fully functional, Polymer Laboratories PL-ELS 1000 Evaporative Light Scattering Detector. Laboratories is a completely new design of high sensitivity Evaporative Light Scattering (ELS) Detector for HPLC, microHPLC and GPC/SEC. This ELS detector has replaced the RI for the detection of solutes with no UV chromophore, giving enhanced performance with the benefits over an RI of improved sensitivity, excellent baseline stability, gradient compatability, and providing a positive response for all solute/solvent combinations. Features: -Small footprint for laboratory convenience -Improved sensitivity -Low dispersion Rsdpfxst Uk Dmo Abpjcf -Excellent baseline stability -Wide gradient compatibility -Rapid equilibrium -Detection of even relatively volatile compounds -The PL-ELS 1000 from Polymer Good working condition. Please check out our other listings as well.

Condition: new, Year of construction: 2026, The multi-blade or double arbor circular saw SQUALO 420 is a technologically advanced, easy-to-use, precise, and highly reliable machine. It is essential in a modern sawmill for optimizing the production of sawn timber. Ideal for the production of battens, squares, sawn timber, profiles, trimmed boards, prisms, slats, and pallet components. Rjdpfxox Urucj Abpjcf SPECIAL PRICE, OFFER OF THE MONTH UNBEATABLE PRICE

Condition: new, Year of construction: 2026, The SQUALO 522 Multiblade or Double Shaft Multiblade Circular Saw is a technological machine, essential in a modern sawmill to optimize the production of sawn timber. Ideal for the production of strips, squares, sawn timber, profiles, trimmed boards, prisms, tablets, elements for pallets. SPECIAL PRICE, OFFER OF THE MONTH UNBEATABLE PRICE Double shaft multi-blade: Squalo 525 motor powers from 55 to 132 Kw Description Details Conveyor belt width mm 520/620 Width Conveyor rollers at the entrance mm 510 Width Conveyor rollers at the exit mm 610 Max saw group width mm 500 Max cutting height mm 220 Min. Length of work mm 1000/1200 Max passage width mm 800 Blade shaft diameter mm 80 Redpfx Aelz S Rbebpjcf Max diameter circular blades mm 400 Blade hole diameter mm 100 Blade shaft speed rpm 3.800 Speed of advancement mt/min 3 – 60 Weight 9.500 – 10.500 Kg Overall dimensions mm 2720x2515x2105h

Condition: new, Year of construction: 2026, The PIRANHA 310 Multi-blade or Multi-blade Circular Saw with single shaft is a technological machine, indispensable in a modern sawmill to optimize the production of sawn timber. ideal for the production of strips, squares, sawn timber, profiles, edged planks, prisms, boards, elements for pallets. SPECIAL PRICE, OFFER OF THE MONTH UNBEATABLE PRICE Rcsdpfehpbu Rjx Abpef

Year of construction: 2012, operating hours: 3,500 h, condition: used, functionality: fully functional, P System fully automated hydraulic pelleting line with patented hydraulic pelleting system. Mono roller, hydraulically operated with a unique load sensing system. Features automatic vegetable oil injection at startup and shutdown. Continuous rated production 350kg/hr (peak 500kg/hr) - Fully automatic, operates without human intervention. In its current setting it worked 12hrs continuously alongside log production, but can operate continuously if required. Line includes the following:- 50m³ moving floor container with hydraulic operated lid. Material level viewing windows, and unloading cross auger. Incline discharge auger with magnetic separator. First stage hammer mill for material up to P16 (G30). Pneumatically conveyed to minisolo. Mini silo distribution hub with hydraulic agitator. Equipped with cyclone and transfer fan. The unit has an additional port covered with a blanking plate to allow addition of another pelleting module. Second stage hammer mill and rotary valve controlled by pelleting module. P300 - 30kW pelleting module with PCL control system. All motors other than the main drive are hydraulic and controlled by the pelleting module. The system has a moisture sensor which injects water into the second stage hammer mill to control pellet quality. Die temperature is monitored by a temperature probe and controlled by compressed air injection. Automatic oiling system on startup and shutdown. 6m Discharge cooling and screening auger. Pellets are conveyed, cooled and screened for dust by hydraulically driven auger. Double filter air extraction unit. Rcsdpfx Aszcf Dlebpsf The line is in good condition and comes with a set of spare parts, dies and rollers. PCL control unit and main drive gearbox were replaced over a year ago. It has been serviced well and can be demonstrated working if required, with your material. Not included in offer, but available by request 4000L pellet hopper made from galvanised steel metal, with pneumatically operated hopper. Semi-automatic bagging plant, 5kg - 30kg capacity. Plastic sack heat sealer. Pellet quality test equipment. 5m Bucket elevator made by Perrys of Oakley.

Condition: repair required (used), Year of construction: 2020, functionality: fully functional, machine/vehicle number: 103-20 ` 104-20, total height: 1,900 mm, total width: 3,400 mm, total length: 4,100 mm, type of input current: three-phase, Equipment: documentation/manual, We are offering for sale two identical apple slicing machines with a shared feed tank and feed line. These machines are suitable for processing various types of fruit, including apples, pears, peaches, nectarines, persimmons, oranges with peel, kiwis, and pineapples. They can be used for cutting into ring slices, segments, and chunks, with or without coring, and are also suitable for producing whole cored fruits such as apples, pears, peaches, nectarines, and more. The machines are therefore perfectly suited for preparing fruit for the drying industry, confectionery and baking industry, fresh fruit salads, the snack industry, or fruit preserves. The design is simple and highly versatile, enabling rapid changeover between ring-slicing, segmenting, chunking (with or without coring, depending on the particular fruit), or coring only, according to your production requirements. The machines also allow quick adjustment of slice thickness, segment number, chunk size, and coring diameter. Constructed entirely of AISI 304 stainless steel, the machines can be integrated inline with other processing equipment. Round fruits can be automatically fed, singulated in the loading area, and transferred onto a stainless steel conveyor equipped with an automatic orienting system, which aligns each fruit inside dedicated tray recesses (the automatic orienting system is suitable for apples, peaches, nectarines, and persimmons without leaves). Other fruit types are manually placed onto the stainless steel conveyor. In the slicing section, the machinery delivers a sharp and precise cut that does not affect organoleptic qualities, ensuring maximum hygiene and product quality. Fruits are processed into rings, segments, or chunks, and/or cored, using interchangeable cutting units that allow variation in slicing dimensions and coring diameter. The sliced products are transferred onto a discharge belt conveyor. Fruit cores are separated below the working area, where a conveying belt (not included in the standard supply) can be installed to carry cores to a collection container. Rcedpfx Aex Sx Azjbpef All safety guards feature easily removable, quick-release interlocked hinges, allowing safe, rapid maintenance and thorough cleaning.

Condition: new, Year of construction: 2026, NDS 2 • Aluminum profile construction • Adjustable angle/tilt • Length of inclined part: 1300 mm • Usable width: 350 mm • Loading length: 600 mm Rodpfowktn Ajx Abpocf • Separating length: 800 mm • Minimum height (H min): 600 mm • Maximum height (H max): 1000 mm • Separator with blades included

Condition: new, Year of construction: 2026, MIXER Mod. MV2 • Steel construction, painted exterior (RAL 9006) • Capacity: 120 kg / 200 liters • Square frame: 700 x 700 mm • Adjustable height: from 1085 mm to 1385 mm (from the floor to the loading point) • Programmable control unit with emergency stop button Rodpfx Abowktm Eopocf (The customer can choose between manual mode - continuous operation - and automatic mode - with adjustable operating time and pause) • Geared motor: 0.5 HP / 0.37 kW, 220/380V, 50 Hz • Upper lifting door with hinges for loading material with safety microswitch • Lower lifting door for discharging material with safety microswitch • Side openings for connecting a suction hose • Mixer frame on adjustable telescopic legs with swivel wheels with brake

Condition: new, Year of construction: 2025, Automatic stacker with hydraulic lifting, ultra-high performance and super reliable, precision, safety, versatility. Rcodpfev Hp Tnox Abpef

Condition: new, Year of construction: 2025, MAX MAMMUT 400-500-600: High speed log profiling line (up to 600 mm in diameter) for the production of prisms, "river use", "trieste use" beams, boards in general and semi-finished products for pallets. FULLY HYDRAULIC MACHINERY Rcodpfx Aehpbthobpof Minimum diameter of logs 120 mm Maximum diameter of logs 600 mm Minimum working length mm 1.800 Maximum working length mm "Infinite" (∞) Tool holder shaft diameter 60-80 mm Cutter diameter mm 300 Feed speed mt / min. 5 - 70

Condition: used, Year of construction: 1998, Manufacturer : Axomatic srl Model: Optima 900 Matic Year : 1998 Type : Plastic tube filler Max capacity : 70 units / min Dosing range : 2 ml - 300 ml Max tube length : 280 mm with cap Tube diameter: 10 mm - 60 mm Power : 7 KW Rcjdox R Arkopfx Abpjf Current: 18 A

Condition: used, Year of construction: 1995, Manufacturer: Ozaf srl Model: E 10 Redpfx Aex R Ap Ajbpocf Year : 1995 Type : Elevating belt with cleats / Giraffe conveyor.   Power : 1,5 Kw Equipment: vibration system Overall dimensions: 65 x 135 x 190 cm Dumping height: 120 cm

Condition: good (used), Set of various equipment viewable at the address shown, after telephone contact Rcjdpfx Abstv Da Nopof

Condition: reconditioned (used), Year of construction: 2006, BACCIOTTINI Group Pit Stop AF Speed, year 2006: automatic creasing and perforating machine in excellent condition. The machine will be overhauled at Bacciottini Group srl's facilities. Robust construction and reliable performance. The machine is equipped with a NEW standard V-Shape creasing kit and a 100 cm extension. All other optional tools currently available can be added: digital creasing kit, standard perforating kit (2/1, 3/1, 4/1), or micro-perforation kit. Technical specifications: - Maximum format: 50 x 70 cm (50 x 100 cm with extension) - Minimum format: 8 x 15 cm - Paper weight: from 80 to 600 gsm Redpfxsyk Utxe Abpocf - Minimum creasing distance: 0.1 mm - Programming: 200 programs with 100 creases per program - Power supply: 400 Volt three-phase 50 Hz - Power requirement: 3.5 kW This has been our best-selling model for years and continues to be appreciated worldwide for its quality and reliability. The attached photos are from our catalogue and do not specifically refer to the machine being offered.

Condition: as good as new (ex-display), Bacciottini Group OXO MULTI SKILL, machine from showroom. OXO MULTISKILL is a compact creasing and folding machine with automatic non-stop loading feeder With few simple operations OXO MULTISKILL can switch from a normal creasing machine to a creasing/folding unit. Once in the folding machine mode after the fold type, sheet length and paper thickness have been selected, the machine adjusts automatically ready for production. Additional supplementary creases can be added along with ones necessary for the folding of a product. It allows a quick tool change over from the creasing to perforating just in a few seconds. TECHNICAL FEATURES: Minimum size in creasing: 8×10 cm | folding: 8×15 cm Maximum size in creasing and/or in folding 50×70 cm (with optional extension feeder 50×100 cm) – minimum and maximum size can change depending on the kind of fold Sheet weight in creasing: from 80 to 600 g.s.m. in folding: from 80 to 400 g.s.m.; from 0.08 mm to 0.4 mm of thickness – variable according to the quality of the paper Min. distance creasing 0.1 mm between creases | 0.1 mm from front edge | 0.1 mm from tail edge Production A4 in creasing: 9,000 sheets per hour (with 1 crease.) | in folding: 9,000 sheets per hour (with a single fold) Maximum number of creases 40 – possibility of doing a greater number of creases than those necessary to fold the sheet Power supply 400 Volt three phase + Neutral 50 Hz 4 Kw This machine from showroom is equipped by a standard V-shape creasing kit. All other optional tools are available and can be added to its equipment: -digital creation kit -standard perforating kit 2/1, 3/1, or 4/1 -micro perforating kit Rcsdpfsv Rbkmox Abpjf -extension feeder 100 cm

Condition: new, NEW machine, end-of-series Pit Stop D2H HIGH SPEED double-head creasing and perforating machine, equipped with 2 standard creasing kits (for Head A and Head B) and mobile wheels. The second head, unlike the first, operates from bottom to top. All creasing and perforating tools can be installed on this second head. This allows creasing and perforating to be performed in a single pass; or, by fitting two creasing tools, it is possible to perform creases from both the top and the bottom in one pass, ensuring the correct crease orientation for zig-zag folding. High-performance creasing machine with a maximum output of up to 14,000 sheets per hour. Easy-to-use controls allow for up to 100 creases or perforations per sheet and a memory capacity of up to 200 jobs. The machine can crease, perforate, and punch, making it ideal for WIRE-O binding and calendar production. This end-of-series machine can be equipped with the following optional tools: - Digital creasing kit (for both Head A and Head B) - Perforation kit 2/1-3/1-4/1 (for both Head A and Head B) - Micro-perforation kit (for both Head A and Head B) - 100 cm extension - Punching kit in various sizes Technical data: Min./max. sheet size: 8×10 cm / 50×70 cm (with optional extension 50×100 cm) Paper weight: 80 to 600 g/m² Programming: 200 programs (100 operations per program) Rodpfx Absxmhflspecf Minimum crease distance: 0.1 mm Production speed in A4: 14,000 sheets/hour (with 1 crease) Power supply: 400 Volt three-phase + neutral, 50 Hz