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SPX Power Team hydraulic technology

RHA306 – 30 ton, Single-Acting Center-Hole Hydraulic Cylinder, 6-inch Stroke.

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RHA306 – 30 ton, Single-Acting Center-Hole Hydraulic Cylinder, 6 inch Stroke.

The Power Team RHA306 is a 30-ton, double-acting center-hole hydraulic cylinder engineered for precision pulling, tensioning, and rod-through applications where controlled bidirectional force is required. Its annular design enables direct alignment over studs, cables, or tie-rods, while the double-acting configuration provides positive retraction under load, reducing cycle times and improving operational consistency. The honed steel cylinder body and wear-optimized seals maintain pressure integrity during high-duty cycles and resist deformation under full-capacity compressive loading.

Built for durability in demanding industrial environments, the RHA306 incorporates a hardened bearing surface, corrosion-resistant plating, and high-flow porting to minimize pressure drop across the hydraulic circuit. The center-hole geometry supports application-specific tooling such as puller attachments and tensioning assemblies, while the threaded collar provides secure fixturing during high-load operations. Its compact footprint and precisely machined tolerances allow integration into confined work envelopes without compromising structural rigidity.

Powerteam RHA306
Product code:
RHA306
Capacity:
30 ton
Action Type:
Single-Acting Spring Return
Cylinder Type:
Center-Hole
Stroke Length:
6 in

Related Products

Use Cases

  • Stud Tensioning & Bolt Testing: Ideal for precision elongation of anchor bolts, structural fasteners, and flange assemblies where the center-hole design allows axial alignment over the stud.

  • Post-Tensioning & Cable Pulling: Supports controlled tensioning of cables, rods, and wire bundles in infrastructure, lifting, and rigging systems requiring accurate bidirectional force control.

  • Bearing, Bushing & Gear Extraction: Used with puller tooling for high-force removal of press-fit components where a through-rod configuration is required for uniform extraction.

  • Heavy Equipment Service: Suitable for maintenance of construction, mining, and industrial machinery requiring high tonnage pushing/pulling with constrained access.

  • Test Fixtures & Load Frames: Integrates into mechanical test setups needing repeatable, dual-direction hydraulic actuation with precise stroke control.


Advantages

  • Bidirectional Actuation: Double-acting design provides controlled extension and positive hydraulic retraction, reducing cycle times and improving positioning repeatability.

  • Center-Hole Geometry: Allows direct alignment over rods, studs, or cables, enhancing load concentricity and eliminating off-axis force generation.

  • High Structural Rigidity: Thick-walled, honed cylinder body resists deformation under full-rated pressure, ensuring long-term dimensional stability and accurate load transfer.

  • Enhanced Seal Integrity: Utilizes wear-resistant seals optimized for high-pressure duty cycles, improving service life and minimizing hydraulic leakage.

  • Compact Industrial Form Factor: Small footprint and clean machining allow deployment in restricted spaces without compromising load capacity or stability.

  • Versatile Tooling Compatibility: Threaded collar and standardized porting simplify integration with tensioners, pullers, and custom fixturing assemblies.

Specifications (Imperial)

  • Capacity: 30 tons

  • Stroke: 6.00 in

  • Cylinder Effective Area: ~6.8 in² (extend), 5.5 in² (retract)

  • Center Hole Diameter: 1.50 in

  • Collapsed Height: 10.5 in

  • Extended Height: 16.5 in

  • Outside Diameter: 4.5 in

  • Return Type: Double-acting

  • Maximum Operating Pressure: 10,000 psi

  • Port Size: 3/8 in NPTF

  • Weight: 35–40 lb

Comparable RH Series Cylinders, (including RHA Aluminum)

Product Tonnage Stroke Return Type Cylinder Type Retracted Height Extended Height
RH10010 100 10.13 Hydraulic-Return Double-Acting 19.5 in 29.63
RH1508 150 8 Hydraulic-Return Double-Acting 13.75 in 21.75
RH605 60 5 Hydraulic-Return Double-Acting 9.5 in 14.5
RH503 50 3 Spring-Return Single-Acting 7.13 in 10.13
RH1505 150 5 Hydraulic-Return Double-Acting 12.25 in 17.25
RH120 12 0.31 Spring-Return Single-Acting 2.19 in 2.5
RH306 30 6 Spring-Return Single-Acting 9.75 in 15.75
RH2008 200 8 Hydraulic-Return Double-Acting 16.06 in 24.06
RH1001 100 1.5 Hydraulic-Return Double-Acting 6.5 in 8
RH303 30 3 Hydraulic-Return Double-Acting 7.06 in 10.06
RH606 60 6 Spring-Return Single-Acting 12.25 in 18.25
RH203 20 3 Spring-Return Single-Acting 6.06 in 9.06
RH108 10 8 Spring-Return Single-Acting 11.31 in 19.31
RH1003 100 3 Spring-Return Single-Acting 10 in 13
RH102 10 2.5 Spring-Return Single-Acting 5.31 in 7.81
RH202 20 2 Spring-Return Single-Acting 6.13 in 8.13
RH206 20 6 Spring-Return Single-Acting 12.13 in 18.13
RH121T 12 1.63 Spring-Return Single-Acting 4.81 in 6.44
RH121 12 1.63 Spring-Return Single-Acting 4.81 in 6.44
RH3010 30 10.13 Hydraulic-Return Double-Acting 17.25 in 27.38
RH123 12 3 Spring-Return Single-Acting 7.25 in 10.25
RH603 60 3 Spring-Return Single-Acting 9.25 in 12.25
RH306D 30 6 Hydraulic-Return Double-Acting 11.06 in 17.06
RH302 30 2.5 Spring-Return Single-Acting 6.25 in 8.75
RHA604D 60 4 Hydraulic-Return Double-Acting 9.5 in 13.5
RH6010 60 10.13 Hydraulic-Return Double-Acting 18.06 in 28.19
RH1006 100 6 Hydraulic-Return Double-Acting 12.38 in 18.38
RHA306 30 5.88 Spring-Return Single-Acting 11.16 in 17.03

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