Description

Product Overview

The LUBE USA 185501 HSA-03 standard metering unit is a precision flow control valve used in centralized lubrication systems. It regulates oil delivery to individual lubrication points, ensuring consistent and balanced lubrication across the machine.

This unit is designed for single-line resistance (SLR) systems with intermittent (cyclic) oil delivery and features standard (inch) threads for compatibility with inch-based systems.

Applications

• Centralized lubrication systems
• CNC machines and machining centers
• Bearings, slides, and moving components
• Lubrication points requiring moderate oil flow

👉 Metering units are resistance-type valves used to control oil delivery in cyclic lubrication systems

Key Features

• Intermediate-flow design (HSA-03 = between low and standard flow)
• Standard (inch) thread configuration
• Controls oil delivery to individual lubrication points
• Designed for intermittent (cyclic) lubrication systems
• Compact size (~25mm length)
• Compatible with 4mm tubing systems
• Durable construction for industrial environments

Why This Part Matters

In lubrication systems, each point requires a specific amount of oil.

Without proper metering:

• Some points receive too much oil
• Others receive too little
• System balance is lost

This metering unit provides an intermediate flow rate, helping fine-tune lubrication between low and standard flow sizes.

When to Use This Metering Unit

• When HSA-02 is too low
• When HSA-1 is too high
• When working with inch-based lubrication systems
• When replacing worn or clogged metering units

Specifications

• Part Number: 185501
• Model: HSA-03
• Type: Metering unit / flow control valve
• System Type: Single-line resistance (SLR)
• Flow Rating: 03 (intermediate)
• Thread Type: Standard (inch)
• Application: Controlled lubrication flow

📞 Need Help Choosing Metric vs Standard?

Not sure if your system is metric or inch?

👉 Call us or request a quote—we can help you match the correct metering unit and fittings.