RLT Series Cylinders
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RLT Series Telescopic Cylinders
Compact Enerpac telescopic cylinders. Features of this series:
- Single-acting, load return
- Nitrocarburizing of internal and external surfaces providing corrosion protection
- For use in confined spaces: machine positioning, tool fastening
- Bolt mounting holes for easy fastening
- Side load resistance up to 3% at full load
- Design safety factor compliant with ASME B30.1 and EN1494 standards
- CR-400 coupler ensuring compatibility with standard product
- High-alloy steel for maximum strength.
Enerpac RLT series hydraulic cylinders – low-profile telescopic cylinders (700 bar)
Enerpac RLT series hydraulic cylinders (low-profile single-acting telescopic cylinders with load return, Enerpac Low Height Telescopic Cylinders) [1-3] are ultra-compact power hydraulic tools designed for precise lifting and assembly work in drastically limited workspaces [3]. These devices feature a multi-stage telescopic design, allowing for a higher working stroke with an exceptionally low minimum body height [2, 3]. The RLT series operates at a maximum working pressure of 700 bar (70 MPa), generating lifting capacities from 4.4 to 74 metric tons (from 43 kN to 1407 kN) with a total stroke from 17 mm to 40 mm, depending on the number of telescopic stages [2, 4, 5]. All internal and external surfaces of the cylinders undergo a nitrocarburizing (cyaniding) process, which guarantees excellent resistance to corrosion, abrasion, and harsh industrial environments [3]. They have factory mounting holes for easy rigid attachment to the base and meet the stringent ASME B30.1 and EN1494 safety standards, making them indispensable equipment for machine positioning, tool fastening, and service work [3].
Application and technical characteristics of Enerpac RLT series cylinders
Enerpac RLT low-profile telescopic cylinders were created for applications where standard single-piston cylinders do not fit due to excessive initial height [2, 3]. They are commonly used for machine leveling, tool fastening, structure seating, and assembly work in tight technological clearances [3].
- Multi-stage telescopic design: Allows for a significant working stroke from a very low initial cylinder height [2, 3].
- Maximum working pressure 700 bar: Generation of lifting forces ranging from 4.4 tons to 74 tons (from 43 kN to 1407 kN) in an ultra-compact housing [2, 4, 5].
- Single-acting with load return: Simplifies pressure line connection and enables efficient retraction of telescopic stages under the weight of the lowered load [3].
- Advanced hardening protection (nitrocarburizing): Nitrocarburized internal and external surfaces effectively protect working components from corrosion and seizing [3].
- Base mounting holes: Bolt hole equipment facilitates stable attachment of the cylinder to the base or fixture plate [3, 4].
- Side load resistance up to 3%: The telescopic stage bearing design allows for safe operation with a slight deviation of the load axis [3].
Why choose Enerpac RLT series cylinders at HYDRON store?
As an official distributor of Enerpac brand equipment, the HYDRON store provides 100% original RLT series hydraulic cylinders meeting the rigorous ASME B30.1 and EN1494 standards [3]. These devices are equipped with standard 3/8"-18 NPTF ports with dust caps [5]. To improve plunger return in single-acting cylinders, it is recommended to use Enerpac ZU4 or ZE series pumps with Venturi valve technology [6], while for simultaneous control of several telescopic cylinders, the use of EVO or EVOB synchronous pumps is recommended [4]. To create a safe and reliable pressure workstation, we recommend selecting other compatible products from our offer, such as original Enerpac hydraulic tools and cylinders [7], efficient 700 bar hydraulic pumps [8], flexible high-pressure hydraulic hoses [9] and leak-free 700 bar hydraulic quick-connect couplers [10].
Technical specification
Technical parameter | Value / Description |
|---|---|
Product category | Enerpac RLT series hydraulic cylinders (low-profile telescopic) [1, 3] |
Operating method / Plunger return | Single-acting / load return [3] |
Maximum working pressure | 700 bar (70 MPa / 10,000 PSI) [4] |
Nominal capacity class | from 4.4 to 74 metric tons (from 43 kN to 1407 kN) [2, 4, 5] |
Lifting stroke range | from 17 mm to 40 mm [2, 4] |
Number of telescopic stages | 2 or 3 extension stages [4, 5] |
Protective coating of body and plungers | Nitrocarburizing of internal and external surfaces [3] |
Side load resistance | up to 3% at full rated load [3] |
Standards compliance and certifications | ASME B30.1, EN1494, CE [3] |
Frequently Asked Questions (FAQ)
What are Enerpac RLT series low-profile telescopic cylinders used for?
RLT series cylinders are used for precise lifting, machine positioning, and tool fastening in confined spaces with extremely limited working clearance height [3].
How does the plunger return in Enerpac RLT cylinders?
RLT cylinders are single-acting designs with load return [3]. Retraction of the telescopic stages occurs under the influence of the weight of the lowered load or self-weight after releasing pressure in the pump [3].
How do RLT telescopic cylinders differ from standard RSM or RCS low-height cylinders?
RLT cylinders have a two- or three-stage telescopic design, allowing for a greater total lifting stroke from a lower initial height compared to single-piston RSM or RCS cylinders [2, 3, 11].
What pumps are recommended for parallel supply of several RLT cylinders?
When simultaneously controlling several RLT telescopic cylinders, Enerpac recommends using EVO or EVOB series synchronous pumps, which ensures even distribution of oil flow to individual stages [4].