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

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. Worm Gear units reduction types Parallel angle helical bevel helical geared motors & reducers Right angle helical bevel helical geared motors & reducers Screwjack worm gear unit Helical parallel shaft & bevel helical right angle drive gear In-line helical geared motors & reducers Worm gear unit Large helical parallel shaft & bevel helical right angle drive units Roloid Gear...

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 -...

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. 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 computer calculations and suggestions, for both standard and special applications. Being an international company, we are able, through our own subsidiaries and active agents, to give the optimum solution, on a local...

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

SELECTION GUIDE SELECTION GUIDE For the application of Worm Gear Screw Jacks Contact person: Describe the intended installation: LIFTING SCREW Axially travelling screw or nut? (BD/BDL): Lifting speed (mm/min): Mounting position of screw (horizontal/upwards/inverted): Ballscrew preferred? (yes/no): Screw end (thread, top plate, clevis): Protection bellow? (yes/no): Protection tube on reverse side? (yes/no): Stainless material: Number of jacks per installation: AXIAL LOAD ON LIFTING SCREW Dynamic load per screw jack normal (kN): Dynamic load per screw jack max (kN): Static load per screw jack...

1. Type BD = 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 3. L = Low worm gear ratio with single start lifting screw H = High worm gear ratio with single start lifting screw L2 = Low worm gear ratio with double start lifting screw H2 = High worm gear ratio with double start lifting screw 4. Direction of lifting screw 5. Lifting screw end execution 4 = Special execution (Specify) R1 = Stainless lifting screw with threaded end R2 = Stainless lifting screw with...

Symbols used: V = Lifting speed (mm/min) s = Pitch of lifting screw (mm) n = Required input speed (rpm) i = Ratio of worm gear set Pd = Running power of screw jack Ps = Starting power of screw jack PMnom = Nominal motor power (kW) PMst = Starting power of motor (kW) PMax = Max allowable input power of Hd = Running efficiency of screw jack ns = Starting efficiency of screw jack To calculate a screw jack you must at least know the force (F) to be moved There are three types of standard format mechanical jacks. Screw jack with single start trapezoidal lifting screw available in This is the...

Trapezoidal lifting screw Thrust and radial bearings 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. :hanical jacks have a allowable working temperature 3e from -30° C to +100° C. At full load the degree of lation (ED) must not normally exceed 40% per 10 utes, still not more than 20% per hour totally, in valid at other conditions consult our Application Engineers. Technical data, single start spindle

TECHNICAL DATA Technical Data, Double Start Spindle * The holding torque is the torque on the input shaft which is required to prevent the load from being lowered. Technical Data, Static Load Maximum allowed static load (kN) (at tension loads in lifting screw) Above values can be allowed when the load is still. Under movement or when vibrations can occur are the dynamic values valid. At all cases with compression load must not the values in the "compression load tale BD - BDL" be exceeded.