HSG screw jack (cubic design) HSG Hubgetriebe (kubisch) Product description Precision screw jack HSG lifting force 2.5 kN to 500 kN INKOMA-precision screw jacks are high quality engineering products for precise lifting, lowering and pivoting of loads, and are, under normal operation, maintenance free. The use of high quality grey cast iron and aluminium in the production of the housings guarantees a long life and a high operating margin. All housings have a cubic form and are machined on all faces. Motor and screw jack assemblies may be mounted in any attitude. Compressive, tensile and offset loadings can be tolerated even under extreme operating conditions. The worm gearing in the INKOMA-precision screw jacks has a special gear form. A concave profile and cylindrical worm with an enveloping wheel results in low specific tooth pressure giving a long working life. The worm gear is manufactured from quality alloy steel and is ground and ion-nitrided. Sealed angular contact ball bearings on both ends of the worm shaft carry the resultant axial loads from the drive. The gearing, the gear module and the helix angle are optimised to allow transmission of the largest possible proportion of the nominal torque. The special worm wheel is produced from high performance bearing bronze. The precise location diameter and and the use of ball thrust bearings accurately position the worm wheel. Using a centrally guided threaded flanged nut in the gear housing and the cover, the worm gearset backlash can be adjusted to a very low level and locked in position. Above and below the worm wheel a bronze bush is located to carry the high reactive loads on the translating spindle. Normally the gear ratios and the spindle pitch are matched. The trapezoidal spindle is a precision component rolled to tight tolerances. Single start rolled trapezoidal spindles are self locking, however it is recommended that an end- stop, motor brake or similar is employed in order to ensure that operational safety standards are met. Precision screw jack with ball screw spindle Precison screw jacks can be equipped with a range of ball screws (KGS). For versions see table. The use of ball screws allows higher lifting speeds. Higher efficiency (ca. 90%) reduces the required input power and increases the available duty. Note: The maximum lifting capacity for each size is reduced. Please note the dynamic lifting force Fdyn. [kN]. Screw jacks fitted with ball screws (KGS) are not self-locking. For this reason the motor must be fitted with a brake. To ensure the most careful matching of your requirements we have developed a comprehensive range of accessories. If you have questions or problems, regarding power, special designs, corrosion resistance, spindles or modifed gear housings, contact our engineers and sales personnel. We are always ready to assist in the correct selection of our products and with the design of lifting systems. Please make use of our wide experience.

HSG screw jack (cubic design) HSG Hubgetriebe (kubisch) Contents list HSG precision screw jacks with rotating and translating spindles Versions / design of the lifting system rotating version (R), translating version (S, SA, SV, SVA) procedures Dimensions HSG-0 to HSG-2 trapezoidal spindle rotating and translating versions (R, S, SA, SV, SVA) Dimensions HSG-3 to HSG-5 trapezoidal spindle rotating and translating versions (R, S, SA, SV, SVA) Dimensions HSG-200 to HSG-500 trapezoidal spindle rotating and translating versions (R, S, SA, SV, SVA) Trapezoidal spindles for HSG-1 to HSG-500 standard...

HSG screw jack (cubic design) HSG Hubgetriebe (kubisch) Contents list HSG precision screw jacks with rotating and translating spindles HSG - KSH definition of the applied loads, torques and speeds/calculations calculation of duty maximum duty ED [%/h] critical buckling loads on the lifting spindle Fcrit. [kN] critical spindle speed ncrit. (only for rotating spindle version R) torque in the lifting spindle MSp. [Nm], braking torque MBr. [Nm] input torque Min. [Nm] for each screw jack total input torque Mtot. [Nm] input speed nin. [1/min], input power Pin.[kW] actual lifting speed Vlift act. [m/min]...

HSG screw jack (cubic design) HSG Hubgetriebe (kubisch) Versions Rotating version (R) In rotating version (R) linear motion of the nut results from rotational motion in the spindle. In this version the spindle is axially fixed in the gear housing. Rotating spindle Version R Ball screw spindle stainless steel Translating version (S) In translating version (S) linear motion results from the movement of the non rotating spindle through a rotating integral nut. The spindle is guided through the screw jack housing and must not be allowed to rotate. Over-travel of the spindle is prevented by a travel...

HSG - KSHHSG Hubgetriebe (kubisch) screw jacks (cubic design) Design of the lifting system Method Establish length of the spindle [mm], lifting speed Vlift [m/min] and effective lifting force Feff. [kN] for individual screw jacks. If the duty is relatively light it is not necessary to calculate the ED [%/h] (see page 23) e.g. where adjustments are small or duty is very low. Pre-selection of the screw jack size based on the effective lifting force Feff. [kN] lifting speed Vlift [m/min] and duty ED [%/h] (see page 23). Is the spindle loaded in compression? yes Checking the spindle for buckling...

HSG screw jack (cubic design) HSG Hubgetriebe (kubisch) Dimensions HSG-0 to HSG-2 Trapezoidal spindle - rotating and translating versions (R, S, SA, SV, SVA) All versions have an input shaft on side A and B as standard. Single shaft versions can be optionally specified. Rotating spindle Translating spindle Translating spindle with rotation prevention SVA: Translating spindle with rotation prevention and travel limiter Material: Accessories: SA: Translating spindle with travel limiter d L= length of the running nut; see catalogue accessories for HSG and KSH Ordering example: Precision screw jack...

max. static lifting force 2) HSG screw jack (cubic design) HSG Hubgetriebe (kubisch) Order code supplied without locating diameter values for max. load apply only for initial jack selection. The actual permitted lifting force depends on the version of the jack and the operating conditions. Dimensions [mm] Order code supplied without locating diameter