Screw Jacks
58Pages

Series BD Screw Jacks Technical Up to - 100Te / 5m/min Screw Jacks CBD-2.00GB1211

PRODUCTS IN THE RANGE Serving an entire spectrum of mechanical drive applications from food, energy, mining and metal; to automotive, aerospace and marine propulsion, we are here to make a positive difference to the supply of drive solutions. Series A Worm Gear units and geared motors in single & double reduction types Series BD Screwjack worm gear unit Series BS Worm gear unit Series C Right angle drive helical worm geared motors & reducers Series F Parallel angle helical bevel helical geared motors & reducers Series G Helical parallel shaft & bevel helical right angle drive gear units...

ATEX Compliance Assured Total compliance with the ATEX Directive safeguarding the use of industrial equipment in potentially explosive atmospheres is assured for users of our geared products. Certification is available for standard gearboxes and geared motors with badging displaying the CE Mark and the Ex mark, name and location of the manufacturer, designation of series or type, serial number, year of manufacture, Ex symbol and equipment group/category. ATEX directive 94/9/EC (also known as ATEX 95 or ATEX 100A) and the CE Marking Directive are enforced in all EC member states. Compliance...

SERIES BD CONTENTS Introduction____________________________________________________________________ 3 Standard and variant executions___________________________________________________ 4 Selection guide_________________________________________________________________ 6 Determination of type____________________________________________________________ 7 Selection of jacks_______________________________________________________________ 8 Technical data BD - BDL__________________________________________________________ 9 Power ratings BD -...

SERIES BD INTRODUCTION We are a company in the transmission field with comprehensive experience in manufacturing and marketing MECHANICAL WORM GEAR SCREW JACKS, and complete screw jack systems. Mechanical worm gear ball screw jack, available with translating lifting screw or lifting nut. Capacities up to 125 kN (12.5 tonne). 200 kN (20 tonne) with ball screw available on request. With this catalogue we have made it easy to select a screw jack or screw jack system suitable for your application. You can also consult our Technical Sales and Engineering department. They will help you with...

SERIES BD STANDARD & VARIANT EXECUTIONS Standard Executions BD Screw jack with translating lifting screw BDL Screw jack with lifting nut Fig.2 Fig.3 Screw jack with PVC bellow Screw jack with motorflange SM Stop nut Fig.4 Fig.5 Fig.6 Variant Executions BDK Ball screw jack with translating lifting screw BDKL Ball screw jack with lifting nut Fig.7 Fig.8 4

SERIES BD VARIANT & SPECIAL EXECUTIONS Variant Executions LR Locked against rotation LRK Locked against rotation with key ABL Antibacklash Fig.9 Fig.10 Fig.11 LS Limit switches SHM Safety nut Double Clevis Ends (with reinforced protection tube) Fig.12 Fig.13 Fig.14 Special Executions Worm gears BS 40-71 as screw jacks BSD / BSDL / BSDKL Screw jack with worm gear motor Fig.15 Fig.16 5

SERIES BD SELECTION GUIDE SELECTION GUIDE LIFTING SCREW For the application of Worm Gear Screw Jacks Axially travelling screw or nut? (BD/BDL): Name of company: Stroke length (mm): Address: Lifting speed (mm/min): Telephone/Fax: Mounting position of screw (horizontal/upwards/inverted): Contact person: Ballscrew preferred? (yes/no): Describe the intended installation: (a sketch is advisable) Screw end (thread, top plate, clevis): Protection bellow? (yes/no): Protection tube on reverse side? (yes/no): Stainless material: OPTIONS Safety nut SHM, state safety load direction: Number of jacks per...

SERIES BD DETERMINATION OF TYPE 1. Type BD = 8. Options Screw jack with translating screw Type BDL = Screw jack with travelling nut Type BDK = Ball screw jack with translating screw Type BDKL = Ball screw jack with travelling nut SHM = Safety nut, specify load safety direction SM = Stop nut LR = Locked against rotation LRK = Locked against rotation with key ABL = Antibacklash LS = 2 limit switches including stop nut 2. Size = 27, 40, 58, 66, 86, 100, 125, 200 3. L = Low worm gear ratio with single start lifting screw 9. Stainless steel executions H = High worm gear ratio with single start...

SERIES BD SELECTION OF JACKS Symbols used: F = Force (N) (1 tonne = 10 000 N) v = Lifting speed (mm/min) s = Pitch of lifting screw (mm) n = Required input speed (rpm) i= Ratio of worm gear set ED = Intermittence factor (%) Pd = Running power of screw jack (kW) Ps = Starting power of screw jack (kW) PED = Thermal power (kW) PMnom = Nominal motor power (kW) PMst = Starting power of motor (kW) PMax = Max allowable input power of screw jack (kW) ηd = Running efficiency of screw jack ηs = Starting efficiency of screw jack 2. By compression load check stroke length for bending according to Euler...

SERIES BD DESCRIPTION OF BD - BDL 1 2 3. 4. 5. 6. 7. 8. 1 3 7 2 Trapezoidal lifting screw Thrust and radial bearings Grease of EP-quality Housing of nodular cast iron Alkyd paint 85 micron thick in RAL 5015 Worm screw hardened and ground Worm wheel of centrifugally cast tin bronze Bellows in PVC, steel or other materials. Mechanical jacks have a allowable working temperature range from -30° C to +100° C. At full load the degree of utilization (ED) must not normally exceed 40% per 10 minutes, still not more than 20% per hour totally, in valid at ambient temperature +25° C. 6 4 For other...

SERIES BD TECHNICAL DATA Technical Data, Double Start Spindle SIZE 27 Lifting screw 58 66 86 100 125 200 8000 Max capacity N 40 20000 40000 120000 160000 240000 400000 800000 Tr55x18 Tr 65x20 Tr 90x24 Tr120x28 Tr160x32 Tr 20x8 Ratio (L) Tr 30x12 Tr 40x14 9:1 7:1 6.75:1 7:1 7:1 7:1 7.5:1 12:1 0.888 1.714 2.074 2.571 2.857 3.428 3.733 2.667 6 23 55 210 320 640 1280 2120 Max running power at 20% ED (kW) 0.25 0.7 1.1 1.9 3.6 4.7 6.4 16.0 Starting efficiency ηs 0.18 0.23 0.23 0.22 0.22 0.20 0.19 0.16 Ratio (H) 27:1 30:1 27:1 28:1 28:1 28:1 30:1 36:1 Raise per revolution (mm) 0.296 0.400 0.518...