Overview
The PHD 01921944-04 HVRF 1-1/8×1 is a double-acting tie-rod hydraulic cylinder from PHD’s proven HV series, commonly referred to as Tom Thumb cylinders. This unit features a 1-1/8″ bore diameter and 1″ stroke, designed for reliable performance in industrial automation, packaging, and assembly applications. The PHD 01921944-04 combines robust aluminum construction with field-repairable design, making it a cost-effective choice for maintenance and replacement applications.
Key Features
- Double-acting single-ended tie-rod design for forward and reverse motion control
- Field-repairable construction—reduce downtime by servicing in-place
- Anodized aluminum body and piston for corrosion resistance
- Rated 40–1500 psi (2.8–103 bar) operating pressure range
- Compact NFPA profile fits standard mounting interfaces
Technical Specifications
- Bore Diameter: 1-1/8″
- Stroke Length: 1″
- Hydraulic Ports: 2 × 1/8″ NPT threaded (position 1)
- Rod End: 3/8″-24 UNF male threaded
- Pressure Range: 40–1500 psi (2.8–103 bar)
- Body Material: Anodized aluminum
- Piston Material: Aluminum
- Acting Type: Double-acting
- Series: HV (Tom Thumb)
Typical Applications
The HVRF 1-1/8×1 excels in compact industrial automation where space is constrained and reliable actuation is essential. Common uses include:
- Packaging and labeling machinery
- Assembly line clamping and positioning
- Material handling systems
- Press applications requiring controlled force
- Automation equipment retrofits and upgrades
Compatibility & Replacements
Compatible With
- NFPA-standard mounting plates and rod-end configurations
- Standard hydraulic pumps and proportional control systems
- Pressure relief and flow-control valve manifolds
- Existing PHD HV series mounting infrastructure
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The HVRF 1-1/8×1 nomenclature may appear as HVRF-1-1/8X1, HVRF11/8X1, or HVRF 1 1/8 X 1 in legacy documentation.
Works With
- Proportional directional spool valves
- Manual and pilot-operated hydraulic distributors
- Pressure transducers and load-sensing feedback systems
- Standard ISO/CETOP mounting manifolds
- Hydraulic hose and fitting standards (SAE, ISO)




