🌐 Languages

Differential cylinders

Storz Products > Differential Cylinders

Hydraulic cylinders in accordance with DIN and ISO

We offer Differential cylinders in various versions to meet your needs.

Technical Documents

ZBD 3501 – ND 350 bar – data sheet
zbd3501_350bar.pdf PDF-document [2.1 MB]
Suitable mounting parts DIN 24337
befestigungsteile_din24337.pdf PDF-document [775.3 KB]

ZBD 3501 – Differential hydraulic cylinders – Nominal pressure 350 bar (35 MPa)

Good to know: This STORZ hydraulic cylinder series is designed for system pressures up to 350 bar in quasi static operation.

  • Each cylinder diameter is assigned a piston rod diameter with the area ratio j=2
  • All piston rods are induction hardened and hard chrome plated
  • In the 4 most common mounting types

Please note: not for applications with predominantly high-frequency and pulsating loads

Technical data

Nominal pressure: 350 bar (35 MPa)
Static test pressure: 375 bar (37,5 MPa)
Piston diameter: 50-100 mm
Area ratio j: 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0-1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Befestigungsarten

Technical Documents

ZB 2550 – ND 250 bar – data sheet
zb2550_250bar.pdf PDF-document [3.8 MB]
Suitable mounting parts DIN 24337
befestigungsteile_din24337.pdf PDF-document [775.3 KB]

ZB 2550 – Differential hydraulic cylinder (Storz) – Nominal pressure 250 bar (25 MPa)

Good to know: The STORZ ZB 2550 series hydraulic cylinder with a nominal pressure of 250 bar has been developed for universal use.

  • In 7 different mounting types and 4 sealing variants as standard
  • Favorable series

When determining the type of fastening, please note:
Cylinder can only absorb axial forces
Please check buckling resistance under pressure load

Technical data

Nominal pressure: 250 bar (25 MPa)
Static test pressure: 375 bar (37,5 MPa)
Piston diameter: 25-100 mm
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0-1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Befestigungsarten

Technical Documents

ZW/ZWAS 2511 – ND 250 bar – data sheet
zw-zwas2511_wegmesssystem_250bar.pdf PDF-document [6.2 MB]
Position sensor for ZW/ZWAS 2511
elektronikzubehr.pdf PDF-Document [3.1 MB]

ZW/ZWAS 2511 – Differential hydraulic cylinders (ISO 6022) – Nominal pressure 250 bar with integrated displacement encoder

Good to know: STORZ ZW 2511 or ZWAS 2511 series hydraulic cylinders are equipped with a displacement encoder. The basic design of these hydraulic cylinders is derived from our standard ZBD 2511 series. The installation dimensions essentially correspond to ISO 6022, DIN 24333 and VW 39D921.

  • Available in 3 mounting types for a wide range of applications
  • Nominal pressure 250 bar (25 MPa)
  • Piston diameters from 40 – 250 mm (by default two rod diameters assigned per piston diameter with area ratios j=1.6 and j=2)
  • For displacement encoders by various manufacturers
  • Selected seals and piston rod surface finishes and materials for use under a wide variety of conditions
  • Available with an affixed valve connection plate
  • Also available with a mounted proportional or servo valve
  • For valve connection plates and any proportional and servo valves to be supplied as standard with NG6 and NG10 hole patterns in accordance with ISO 4401
  • Housing of the displacement encoder protected against mechanical damage from outside by protective tube
  • Also available with MP6 swivel eye as a special version

Please note: Linearity deviation, system resolution and reproducibility are outlined in the data sheets for the displacement transducers.

Technical data

Nominal pressure: 250 bar (25 MPa)
Static test pressure: 375 bar (37,5 MPa)
Piston diameter: 40-250 mm (others on request)
Area ratio j: 1,6 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0-1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Befestigungsarten

Mounting types for series ZWAS 2511 (without connection plate)

Mounting types for series ZWAS 2511 (with connection plate)

Technical Documents

ZBI 2511 – ND 250 bar – data sheet
zbi2511_nherungsschalter_250bar.pdf PDF-document [2.2 MB]
Suitable mounting parts DIN 24337
befestigungsteile_din24337.pdf PDF-document [775.3 KB]

ZBI 2511 – Differential hydraulic cylinders (ISO 6022) – Nominal pressure 250 bar (25 MPa) Inductive sensing

Good to know: The STORZ ZBI 2511 hydraulic cylinder was developed as a supplement to the ZBD 2511 cylinder series. The hydraulic cylinders have integrated proximity switches to provide notification of the end position.

  • For the electrical monitoring of the piston end position, number of strokes or stroke sequence without any complex designs for the mounting external limit switches
  • Designed for a nominal pressure of 250 bar
  • Available in 5 mounting types and 6 sealing variants for a wide range of applications
  • Installation dimensions according to ISO 6022, DIN 24 333 and VW 39D921
  • Compact, non-contact proximity switches, pressure-resistant up to 500 bar
  • Electrical connection using plug connection

Technical data

Nominal pressure: 250 bar (25 MPa)
Static test pressure: 375 bar (37,5 MPa)
Piston diameter: 40-250 mm (larger than special version)
Area ratio j: 1,6 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0 – 1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Electrical data

Operating voltage U: 10-30 V
Switching interval Sr: 1,2 +/-0,2 mm
Switching hysteresis: <20% of switching interval
No-load current:: <=10 mA
Current-carrying capacity IA: <=200 mA (at 80 °C)
Reproducibility R: <=5 %
Switching frequency: 1 kHz
Operating temperature: -20…+80 °C
Output function: Make contact element
Residual current IR: <=80 µA within load circuit when switch is blocked

Mechanical Data

Case material: Material-No: 4104
Type of attachment: Plug-in connection
Cable type: 3m long cable, 3×0,34 mm
Degree of protection: DIN 40050 IP68

Circuit Diagram

Befestigungsarten

Technical Documents

ZBD 2512 (CDH1) – ND 250 bar – data sheet
zbd2512_cdh1_250bar.pdf PDF-document [2.5 MB]
Gelenkkopf KM U
gelenkkopf-km-u.pdf PDF-Document [235 KB]

ZBD 2512 – Differential hydraulic cylinders (CDH1) – Nominal pressure 250 bar (25 MPa)

Good to know: The STORZ ZBD 2512 series hydraulic cylinder for a nominal pressure 250 bar is interchangeable with the CDH1 series.

  • International interchangeability thanks to the definition of the mounting dimensions, installation length, surface ratios, piston rod ends and connecting threads
  • Same installation dimensions for cylinders with and without end position damping
  • Two rod diameters assigned to each piston diameter as standard
  • Choice of 6 mounting types and 6 sealing variants as standard
  • Position of line connection as well as venting, start-up valve and throttle screw freely configurable, standard (sequence mentioned) 1,2,3,4.

Please note: Please order add-on components separately.

Technical data

Nominal pressure: 250 bar (25 MPa)
Static test pressure: 375 bar (37,5 MPa)
Piston diameter: 40-250 mm (larger than special version)
Area ratio j: 1,6 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0 – 1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Befestigungsarten

Technical Documents

ZBD 2511 – ND 250 bar – data sheet
zbd2511_250bar.pdf PDF-document [1.4 MB]
Suitable mounting parts DIN 24337
befestigungsteile_din24337.pdf PDF-document [1 MB]

ZBD 2511 – Differential hydraulic cylinders (ISO 6022) – Nominal pressure 250 bar (25 MPa)

Good to know: The STORZ ZBD 2511 series Differential hydraulic cylinder for a nominal pressure of 250 bar complies with the ISO 6022, DIN 24333 and VW 39D921 standards.

  • International interchangeability due to stipulating the fastening dimensions, installation length, surface ratios, piston rod ends and connecting threads
  • Same installation dimensions for cylinders with and without end position damping
  • Two rod diameters assigned to each piston diameter as standard (corresponding area ratios j=1.6 and j=2)
  • 5 standardized mounting methods and 6 sealing variants as standard
  • Position for line connections, vents and throttle screws is freely configurable

Technical data

Nominal pressure: 250 bar (25 MPa)
Static test pressure: 375 bar (37,5 MPa)
Piston diameter: 40-250 mm (larger than special version)
Area ratio j: 1,6 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0 – 1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Befestigungsarten

Technical Documents

ZB 2001 – ND 160 bar – data sheet
zb2001.pdf PDF-document [1MB]

ZB 2001 – Differential hydraulic cylinders (Storz Standard) – Nominal pressure 160 bar (16 MPa)

Good to know: The STORZ ZB 2001 hydraulic cylinder series is a welded cylinder series designed for general industrial use.

  • Available in 6 different mounting types and several sealing variants for a wide range of applications
  • Narrow diameter gradation for the technically optimal and cost-effective design of hydraulic systems
  • 2 piston rod diameters available as standard for one cylinder size (j=1.4 and j=2)
  • Piston rods available in hard chrome plated, induction hardened or induction hardened and hard chrome plated options

Technical data

Nominal pressure: 160 bar (16 MPa)
Static test pressure: 240 bar (24 MPa)
Area ratio j: 1,4 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0-0,5 m/s
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Befestigungsarten

Technical Documents

ZBD 1605 – ND 160 bar – data sheet
zbd1605_160bar.pdf PDF-document [4 MB]
Suitable mounting DIN 24555/24556
befestigungsteile_din24555.pdf PDF-document [611 KB]

ZBD 1605 – Differential hydraulic cylinders (DIN 24554) – Nominal pressure 160 bar (16 MPa) – Tie rod type

Good to know: The STORZ ZBD 1605 series hydraulic cylinder for a nominal pressure of 160 bar complies with DIN 24 554.

  • International interchangeability thanks to the definition of the mounting dimensions, installation length, surface ratios, piston rod ends and connecting threads
  • Same installation dimensions for cylinders with and without end position damping
  • Two rod diameters assigned to each piston diameter as standard (corresponding area ratios j=1.25 and j=2)
  • 5 standardized mounting types and 5 sealing variants to choose from as standard

Technical data

Nominal pressure: 160 bar (16 MPa)
Static test pressure: 240 bar (24 MPa)
Piston diameter: 40-250 mm
Area ratio j: 1,6 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0 – 1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special design

Befestigungsarten

Technical Documents

ZW/ZWAS 1611 – ND 160 bar – data sheet
zw-zwas1611_wegmesssystem_160bar.pdf PDF-document [1.2 MB]
Position sensor for ZW/ZWAS 1611
elektronikzubehr.pdf PDF-Document [3.1 MB]
Suitable mounting parts DIN 24337
befestigungsteile_din24337.pdf PDF-document [775.3 KB]

ZW/ZWAS 1611 – Differential hydraulic cylinders (ISO 6020/1) – Nominal pressure 160 bar with built-in displacement encoder

Good to know: STORZ ZW 1611 or ZWAS 1611 series hydraulic cylinders are equipped with a displacement encoder. The basic design of these hydraulic cylinders is derived from our standard ZBD 1611 series. The installation dimensions essentially correspond to ISO 6020/1 and VW 39D920.

  • Available in 5 mounting types for a wide range of applications
  • Nominal pressure 160 bar (16 MPa)
  • Piston diameter from 32 – 200 mm (from piston diameters of 40 mm there are two rod diameters with area ratios j=1,4 and j=2 as standard)
  • For displacement encoders by various manufacturers
  • Selected seals and piston rod surface finishes and materials for use under a wide variety of conditions
  • Available with an affixed valve connection plate
  • Also available with a mounted proportional or servo valve
  • For valve connection plates and any proportional and servo valves to be supplied as standard with NG6 and NG10 hole patterns in accordance with ISO 4401
  • Housing of the displacement encoder protected against mechanical damage from outside by protective tube
  • Also available with MP6 swivel eye as a special version

Please note: Linearity deviation, system resolution and reproducibility are outlined in the data sheets for the displacement transducers.

Technical data

Nominal pressure: 160 bar (16 MPa)
Static test pressure: 240 bar (24 MPa)
Piston diameter: 32-200 mm (others on request)
Area ratio j: 1,4 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0-1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluidsHFA, HFB and HFC fluids are possible with special designs

Befestigungsarten

Mounting types for series ZW 1611 (without mounting plate)

Mounting types for series ZWAS 1611 (with connection plate)

Technical Documents

ZBI 1611 – ND 160 bar – data sheet
zbi1611_nherungsschalter_160bar.pdf PDF-document [284.0 KB]
Suitable mounting parts DIN 24337
befestigungsteile_din24337.pdf PDF-document [775.3 KB]

ZBI 1611 – Differential hydraulic cylinders (ISO 6020/1) – Nominal pressure 160 bar (16 MPa) Inductive inquiry

Good to know: The STORZ ZBI 1611 hydraulic cylinder was developed as a supplement to the ZBD 1611 cylinder series. The hydraulic cylinders have integrated proximity switches to provide notification of the end position.

  • For the electrical monitoring of the piston end position, number of strokes or stroke sequence without any complex designs for the mounting external limit switches
  • Designed for a nominal pressure of 160 bar
  • Available in 8 mounting types and 6 sealing variants for a wide range of applications
  • Installation dimensions according to ISO 6020/1 and VW 39D920
  • Compact, non-contact proximity switches, pressure-resistant up to 500 bar
  • Electrical connection using plug connection

Technical data

Nominal pressure: 160 bar (16 MPa)
Static test pressure: 240 bar (24 MPa)
Piston diameter: 40-125 mm
Area ratio j: 1,4 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0 – 1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special designs

Electrical data

Operating voltage U: 10-30 V
Switching interval Sr: 1,2 +/-0,2 mm
Switching hysteresis: <20% of switching interval
No-load current: <=10 mA
Current-carrying capacity IA: <=200 mA (at 80 °C)
Reproducibility R: <=5 %
Switching frequency: 1 kHz
Operating temperature: -20…+80 °C
Output function: Make contact element
Residual current IR: <=80 µA within load circuit when switch is blocked

Mechanical Data

Case material: Material-Nr.: 4104
Type of attachment: Plug-in connection
Cable type: 3m long cable, 3×0,34 mm
Degree of protection: DIN 40050 IP68

Befestigungsarten

Technical Documents

ZBD 1611 – ND 160 bar – data sheet
zbd1611_160bar.pdf PDF-document [1.7 MB]

ZBD 1611 – Differential hydraulic cylinders (ISO 6020/1) – Nominal pressure 160 bar (16 MPa)

Good to know: The STORZ ZBD 1611 series hydraulic cylinder for a nominal pressure of 160 bar complies with ISO 6020/1 and VW 39D920 standards.

  • International interchangeability thanks to the definition of the mounting dimensions, installation length, surface ratios, piston rod ends and connecting threads
  • Same installation dimensions for cylinders with and without end position damping
  • Two rod diameters assigned to each piston diameter as standard (corresponding area ratios j=1.4 and j=2)
  • Position for line connections, vents and throttle screws is freely configurable
  • 8 standardized mounting types and 6 sealing variants as standard

Technical data

Nominal pressure: 160 bar (16 MPa)
Static test pressure: 240 bar (24 MPa)
Piston diameter: 25-200 mm
Area ratio j: 1,4 and 2
Temperature range: -20…+80 °C
Viscosity range: 10…600 mm²/s
Lifting speed: 0 – 1 m/s depending on seal variant
Operating medium: Mineral oil according to DIN 51524, HFD fluids HFA, HFB and HFC fluids possible through special design

Befestigungsarten

Technical Documents

ZBD 1001 – ND 100 bar – data sheet
zbd1001_100bar.pdf PDF-document [2.6 MB]
ZBD 1001 – ND 100 bar – Data sheet english
zbd1001_100bar_en.pdf PDF-document [2.0 MB]
Suitable mounting parts DIN 24337
befestigungsteile_din24337.pdf PDF-document [775.3 KB]

ZBD 1001 Differential hydraulic cylinder (DIN 24336) – Nominal Pressure 100 bar (10 MPa)

Good to know: STORZ ZBD 1001 hydraulic cylinders with installation dimensions in accordance with DIN 24336 are fully interchangeable with other makes within the scope of this standard.

  • A logical and consistent addition to the series already standardized according to ISO 6022 (250 bar) and ISO 6020/1 (160 bar)
  • Already standardized add-on components can be used for all cylinder series compliant with DIN 24333, ISO 6022, ISO 6020/1 and DIN 24336
  • 11 mounting methods for an extra-wide range of applications

Technical data

Nominal pressure: 100 bar (10 MPa)
Static test pressure: 150 bar (15 MPa)
Piston diameter: 25-100mm
Temperature range: -20…+80°C
Viscosity range: 10…600 mm2/s
Lifting speed: 0 – 0,5 m/s
Operating medium: Mineral oil according to DIN 51524, 51525 (other as special version possible)

Befestigungsarten

About differential cylinders

Definition

Differential cylinder is the technical term for a conventional hydraulic cylinder.

The term “differential” comes from the Latin word “differre”, which means “to distinguish” or “to deviate”.

Because the piston rod is located on one side of the piston, different effective surfaces are created on which the pressure acts. This results in the cylinder having more force when extending than when retracting. This difference in force led to the designation differential cylinder.

Functioning of the differential cylinder

The basic function of a differential cylinder is to convert hydraulic pressure into mechanical energy.

The force of a hydraulic cylinder depends on pressure and area according to the hydraulic law: F = px A (force = pressure x area)

When the hydraulic fluid is pumped into the bottom chamber, it creates pressure that pushes the piston upwards, thus moving the piston rod outwards.

Main components of a cylinder

The main components of a hydraulic cylinder are the cylinder tube, cylinder head and base, as well as the piston rod and piston, the necessary seals and fixings.

Application areas

Industrial applications

Differential cylinders are used in a wide variety of industries.

Common industrial applications include:
  • Production facilities:  In presses, punches and bending machines.
  • Material handling:  In conveyor systems, lifting tables and manipulators.
  • Automation technology:  In various robotics and handling systems.

Other industries that use Differential cylinders:

  • Energy technology
    • Wind turbines: For blade adjustment (pitch system) and tower tilt.
    • Hydroelectric power plants: In turbine blade controls and dam control systems.
  • Mining:
    • Conveyor systems: For lifting and swiveling movements.
    • Mining machinery: In drilling rigs and transport vehicles.

Benefits for the customer

High reliability and durability

The differential cylinder is an important element in many hydraulic systems and offers specific advantages in applications that require different speeds and forces for extension and retraction movements.

Easy maintenance and upkeep

Maintaining a differential cylinder involves several aspects, such as regular inspections to ensure there are no leaks and that the cylinder is functioning properly.

Technical data and selection criteria

Another important aspect in the selection process is the application in which the cylinder will be used.

Maintenance and repair of Differential cylinders

Regular maintenance ensures a long service life.

The hydraulic fluid should be checked regularly and changed when necessary to ensure it is clean and free from contaminants.

Troubleshooting and repair

Other maintenance tasks include checking and adjusting the seals and inspecting the piston rod for wear or damage.

CONTACT PERSON

Every product starts with productive communication

To ensure that you find the right contact person right away: You can reach your destination quickly by selecting a department:

CONTACT US
Enquiry Cart
Enquiry Cart ×
Loading....