Skip to content

Hydraulic Motors — Radial Piston Motors

The Jahns radial piston motors series HMF, HMT, HMs and HMw come along with fixed displacements. Speed is dependent on the fed flow and torque by the applied pressure. The motors could be combined with hydraulic ventilated brakes and/or planetary gear reducers.

The cylinders (5 or 7) are starlike arranged around the drive shaft. The displacement is a product of the number of pistons, the piston area and the excentricity of the driving shaft. With radial piston motors high volumentric and mechanical efficiencies could be achieved.

HMs:

8 motors in 4 sizes are available as standard with a range of displacement volumes between 1 in3/rev. to 9 in3/rev. All motors come with a keyed shaft or splined hollow shaft. Continuous operating pressure: 3,045 to 4,060 psi.

HMw:

18 motors in 6 sizes are available as standard with a range of displacement volumes between 11 in3/rev. to 384 in3/rev. All motors come with the option of a keyed shaft, splined shaft or splined hollow shaft. Options include contact free revolution counter, hydraulically applied multi-disc brakes, valve block with integrated pressure relief and pre-fill valves. Continuous operating pressure: 3,045 to 4,060 psi.

HMF and HMT:

This new HMF product series comes in 7 sizes with the possibility of 55 different displacement volumes between 2 in3/ rev. to 262 in3/ rev. Manufactured in large batch production means that this product range of motors is competitively priced. Continuous operating pressure: 3,625 psi and max pressure to 6,090 psi. Available with different shaft configurations and revolution counter. The HMT series has higher revolution speed.

HMZ:

The HMZ radial piston motor comes in 2 sizes with smooth and step-less transmission. The ratio of minimum to maximum displacement volumes is between 1:2 and 1:4.

Jahns is a supplier and hydraulic motor manufacturer for various applications including construction, mechanical, marine, and industrial.


Related Products

Hydraulic Motors — Vane Motors

Jahns took over manufacturing, sales and service of the vane motors branch from ATE (Alfred Teves) in 1992.

The sealing principle of vane motors are radial arranged guidance rails were the vanes have to separate the individual pressure fields. The displacement is defined by the pocket depth of the stroke ring and the width of the rotary piston.

The MD4 motor is produced in 4 sizes and the MDS2 is produced in 3 sizes with a displacement volume between 3 in3/ rev. to 150 in3/ rev. The key advantages of these motors lie in their compact design (small outer diameter) and the continuous hollow shaft on the main drive side which offers multiple different application possibilities.

Jahns is a supplier and hydraulic motor manufacturer for various applications including construction, mechanical, marine, and industrial.


Related Products

Hydraulic Motors — Planetary Gear Drive

Coaxial planetary gear drive units are available in 16 different sizes up to 221,,268 ft/lbs. (300,000 Nm), and Angle drive planetary gear drives available in 15 sizes up to 110,600 ft/lbs. (150,000 Nm). Available with different shaft configurations.

On the input side the gear units can be supplied with keyed shaft for belt transmission, with hydraulically applied multiple disc brakes, as well as connections for all currently available hydraulic and electric motors. For the main drive side, splined hubs, mounting flange, main drive flanges, pinions, splined shafts and shrink discs are also available

Jahns is a supplier and hydraulic motor manufacturer for various applications including construction, mechanical, marine, and industrial.


Related Products

Valve Block Flow Dividers

This valve block flow divider is characterized by high synchronization accuracy even with different loads and low flows, small installation space, and low weight.

In addition, the circuit diagram can be kept simpler for end position compensation because the “suction function” required for rotary flow dividers can be omitted.

Please note that this accuracy solution is only suitable for rod side connected double-acting cylinders and, due to the valve technology, special attention must be paid to the cleanliness of the operating medium by using filters with 10 µm.

Flow from 2.5 to 12 lpm / 0.265 to 3.1 gpm
• Working pressure up to 210 bar / 3,000 psi
• Adjustable pressure relief valve
• All connections G3/8″ BSPP
• Anodized housing

Jahns is a supplier and flow divider manufacturer for various applications including construction, mechanical, technological, and industrial.


Related Products

Volumetric Flow Dividers

In comparison to rotating flow divider types Jahn’s MZB and MLH lines are working only by volume dosage and the exchange between volume synchronizer and working cylinders.

The dosage cylinders of MLH linear-stroke-volumetric-dividers are arranged around a master cylinder. Whereas a multiple in-line configuration of cylinders is characteristic for the multi-chamber volume synchronizer MZB.

Flow Divider Linear Stroke MLH:

Designed for high-precision applications, this 3 to 8 section divider is available in 8 sizes. This style of divider achieves a superior level of synchronization, even compared to radial flow dividers, that is to say they are volumetric-dividers in the true sense of the word. Manifold blocks are available for all sizes to incorporate different functions. The operating pressure for all MLH devices is 3600 psi.

Flow Divider Multi Chamber MZB:

Designed for high-precision applications, this divider is primarily used in 2 to 4 chambers; however, these can be built with up to 12 chambers and is available in many sizes. The MZB also gives the advantage of a low pressure drop. The level of synchronization is equal to that achieved by the MLH series of linear stroke volumetric-dividers. The flow rate is 10 gal/min to 79 gal/min. The standard operating pressure is up to 3600 psi and can be increased on special builds to 6100 psi.

Jahns is a supplier and flow divider manufacturer for various applications including construction, mechanical, marine, and industrial.


Related Products

Radial Piston Flow Dividers

MTL:

2 to 12 section divider. Available in 3 sizes. Flow Rate: 7 gal/min. to 66 gal/min per section. Working Pressure: up to 3500 psi. Manifold block for end position damping, with pressure relief valve, pre-fill valve and test fittings for each section. Can be supplied with contact-free RPM counter.

The synchronization tolerances are The synchronization tolerances are ±0.5 to ±0.8%.

MT-GM:

2 section divider. Available in 5 sizes. Flow Rate: 1 gal/min. to 145 gal/min per section. Working Pressure: up to 3500 psi. Manifold block for end position damping, with pressure relief valve, pre-fill valve and test fittings for each section.

The synchronization tolerances are The synchronization tolerances are ±0.5 to ±0.8%.

STL:

2 to 12 section divider. Available in 2 sizes. Flow Rate: 14 gal/min. to 105 gal/min per section. Working Pressure: up to 3500 psi. Manifold block for end position damping, with pressure relief valve, pre-fill valve and test fittings for each section.

The synchronization tolerances are ±0.5 to ±0.8%.

Jahns is a supplier and flow divider manufacturer for various applications including construction, mechanical, marine, and industrial.


Related Products

The in- and outlet blocks of Jahns‘ Gear Flow Dividers are made from steel or aluminum and have integrated pressure relief valves for secondary loop protection, suction valves and measuring ports for each section.

Hydraulic Gear Flow Dividers

Hydraulic Gear Flow Divider MTO (Aluminum Housing):

2 to 12 section divider. Flow Rate: 0.4 gal/min. to 16 gal/min per section. Working Pressure: up to 3625 psi. The chamber inlets are interconnected internally. Every second chamber has an inlet junction to enable connection according to flow rate and dynamic pressure. Version “A” has a combined pressure relief valve and pre-fill valve incorporated directly in the housing for each section. Version G – is without this valve.

Hydraulic Gear Flow Divider MTO (Cast Iron Housing):

2 to 12 section divider. Flow Rate: 3 gal/min. to 58 gal/min per section. Working Pressure: up to 3900 psi. Robust cast iron housing. Manifold block for end position damping, with pressure relief valve, pre-fill valve and test fittings for each section.

Hydraulic Gear Flow Divider HTO (High Pressure – Cast Iron Housing):

2 to 12 section divider. Flow Rate: 3 gal/min. to 37 gal/min per section. Working Pressure: up to 4600 psi. Robust cast iron housing. Optimized inner components: only two displacements cover the former four displacements.


Related Products