Hydraulics

Hydraulic gear pumps and gear motors

The gear pumps from Jihostroj are modern high pressure hydraulic pumps with variable connecting dimensions and styles according to international standards. They have working pressure up to 330 bar. The hydraulic gear pumps are produced in eight interrelated series (T3S, UD, X, P23, T3, Q, QLS, QHD) which have displacement from 0.18 to 100 ccm/rev. We offer all the pumps of series P23, T3, UD, Q in reverse models or as hydraulic motors, they can have special axis sealing resistant to 10 bar. The hydraulic gear pumps are produced in a wide range of modifications for various usage in hydraulic power packs, mobile machines with power circuits or power steering. They can be used in construction and agricultural machines, in fork lifts, excavators, etc. The hydraulic pumps can be equipped with front-end bearing absorbing radial and axial forces of the drive. The hydraulic gear pumps from Jihostroj can be used also as tandem pumps, all the series can be combined in a double or triple (in special cases in four or five pumps systems) modifications. They are applied especially in complicated hydraulic circuits of vehicles and manipulation machines, where they have an advantage of saving space and a number of drives of the pumps. From pumps series P23, T3 and Q are elicited hydraulic gear motors.

Hydraulic cylinders

Hydraulic cylinders are single or double acting hydraulic motors with linear reversible motion. They are used as driving units of hydraulically operated equipment, vehicle hoists, forest, agricultural and construction machinery, and in the mobile hydraulics generally. Wide variety of types and terminations of cylinders and pistons makes big variability of applications possible. Hydraulic cylinders are designed for a nominal pressure up to 320 bars according to their type and size. The range of bore of cylinder is from 32 to 100 mm, the diameter of pistons is from 22 to 80 mm, maximal stroke is up to 1200 mm. In frame of these limit parameters, hydraulic cylinders can be designed with the required functionality and built-in dimensions. Steering cylinders are application of hydraulic cylinders.

Tandem hydraulic gear pumps

The tandem hydraulic gear pumps are produced as double or triple, in special cases in fourfold or fivefold, combinations of all the groups of the gear pumps in tandem design. They are delivered in unidirectional version as clockwise or anti-clockwise pumps with possible built-in control. For heavy operations with axial and heavy radial load of driving gear there is possible to use front-end cover with additional bearing.

For the construction of tandem pumps can be used all the basic model range of the Jihostroj gear pumps in accordance with proportionality of all groups and in accordance with maximum allowed loading of the first section drive gear. Complete design and working technical conditions are always a part of offer elaborated according to customer`s request.

Hydraulic Power Packs

Hydraulic power packs in the modular design are a combination of asynchronous motors in the range from 0.12 to 5.5 kW and hydraulic gear pumps series P23 and T2. It is possible (according to used electromotor and hydraulic gear pumps) to achieve a working pressure up to 27 MPa with a flow rate up to 50 l/min. In conjunction with next components, they can be applied anywhere where a high operating reliability, service life and a favorable price are required. Higher application level of hydraulic power packs are complete hydraulic circuits, which are designed according to customer's requirements.

Flow Dividers

The DPV 2 flow dividers are robust gear type products of cast iron body, without hydraulic balancing with a fixed axial play. Their application is in situations where it is necessary to split the flow with a sufficient accurancy regardless of the pressure ratio in the individual branches. The output branches can be fitted with the relief valves which are adjusted to the customer´s specifications.

The flow dividers can be manufactured with the option of two to six sections. They can be used in construction and agricultural machines, in fork lifts, excavators, etc.

Hydraulic gear pumps parameters