Progressive Distributors for Centralized Lubrication Systems

Quick Answer: A progressive lubrication distributor is a positive-displacement metering device that divides one pump output into fixed doses delivered to multiple machine points in a fixed sequence.

Self-monitoring: A blocked outlet stops the entire piston train, creating a built-in fault signal.
Modular range: ISOHITECH supplies 3–24 outlet distributors rated up to 40 MPa, for oil or grease.
Common uses: CNC tools, mining equipment, wind turbines, mobile machinery and packaging lines.

For system design, sizing calculations and field troubleshooting, see the progressive distributor system design guide.

What Are Progressive Lubrication Distributors?

A progressive lubrication distributor is a positive-displacement metering device used in single-line centralized lubrication systems. It receives lubricant from one pump outlet and divides it into measured volumes that are delivered to multiple machine points in a strict order. Each piston inside the distributor must complete its stroke before the next piston moves, which is why the device is called “progressive.”

Progressive distributors are widely used on CNC machine tools, packaging lines, wind turbines, injection moulding machines, mining equipment and agricultural machinery. They handle both oil and grease, including fluid greases and standard NLGI #2 greases, depending on the series and piston sizing.

ISOHITECH is a lubrication systems manufacturer with 25+ years of experience, supplying automatic lubrication pumps, progressive distributors, metering units and complete centralized systems for construction, mining, wind energy and industrial machinery.

Common Applications

Progressive distributors fit any machine where several points need small, repeated doses of lubricant from a single pump. Typical installations include:

CNC machine tools: Linear guides, ball screws and spindle bearings receive 0.1–0.5 cc per cycle on a timed basis.
Packaging and printing lines: Chains, cams and bearings run continuously; a stopped cycle pin gives an early warning before damage occurs.
Wind turbines: Pitch bearings, yaw gears and main bearing greasing systems use progressive blocks with proximity switches for remote monitoring.
Injection moulding machines: Tie bars, ejector pins and linear bearings receive consistent grease doses without manual intervention.
Mobile equipment: Excavator booms, loader arms and truck chassis grease points are fed from a central grease pump through secondary distributors.

In each case, the same principle applies: one pump output, many metered points, and automatic fault indication if any point stops receiving lubricant.

How Progressive Distributors Work

The distributor consists of a top inlet section, one or more middle metering sections and an end section. Each middle section contains a piston with two outlet ports. When the pump pressurizes the line, the first piston shifts and discharges lubricant from its first outlet. The movement of that piston then opens the path for the next piston to shift, and so on through the whole block.

This sequential action gives three practical advantages:

Metered delivery: Every outlet receives a fixed volume per cycle determined by the piston size.
Self-monitoring: Because pistons are mechanically linked, a blocked outlet stops the entire train. A cycle pin or proximity switch on the end section turns that mechanical stop into an electrical alarm.
Simple expansion: Adding lubrication points usually means adding middle sections to the same block rather than replacing the whole distributor.

For a deeper explanation of pump-to-block layout, line sizing and fault diagnosis, refer to the progressive distributor system design guide.

Progressive Distributor Product Series

The table below summarizes the main progressive distributor families available in this category. All ratings are nominal; confirm the exact configuration with the product page or a quote request.

Series	Outlets	Volume per Outlet/Cycle	Max Pressure	Typical Lubricant	Best Fit
DJF1000	1–18	0.082–0.492 cc	16 MPa	Oil, NLGI #0–2 grease	CNC machines, packaging equipment
DJF2000	3–20	0.16–1.12 ml	25 MPa	Oil, NLGI #0–2 grease	General industrial machinery
DJF3000	3–20	0.4–4.8 ml	25 MPa	Oil (≥N68), NLGI #000–2 grease	High-temperature, heavy-duty systems
JPQ	6–24	Series dependent	30 MPa	Grease and oil	Mining, machining, agricultural equipment
ZP-A	6–24	Series dependent	16 MPa	Light oil to NLGI #3 grease	Manufacturing, heavy machinery
ZPA	Up to 24	0.05–0.30 cm³	18 MPa	Oil, fluid grease, NLGI #2 grease	Small-to-medium industrial installations
M2500	Modular	0.08–1.31 cc	~40 MPa	Oil and grease	Heavy equipment, mining, high-pressure lines
Mono	Modular	SSV-compatible	Carbon steel block	Oil and grease	SSV replacement, harsh environments
SSV replacement	2–20	0.20 cc	30 MPa	Grease and oil	Lincoln Quicklub / SSV systems
BEKA MAX MX-F	6–24	25–105 mm³	30 MPa	Mineral oil, fluid grease, NLGI #2	Industrial and mobile machinery

Most DJF and JPQ blocks use a modular sectional design: one inlet section, one end section and any number of middle sections in between. This lets the same family cover a wide outlet-count range without changing the basic part design.

How to Select a Progressive Distributor

Choosing the right distributor means matching the device to the lubricant, point count, pressure and environmental conditions. Use the following checklist:

Count the lubrication points. Select a block with enough outlets, allowing a small spare capacity for future expansion.
Calculate total cycle volume. Multiply the required dose per point by the number of points to confirm the pump and distributor can supply enough lubricant per cycle.
Check maximum working pressure. High-pressure systems or long feed lines need distributors rated for 25 MPa or more (DJF3000, JPQ, M2500).
Match the lubricant type and NLGI grade. Thick NLGI #3 grease limits the choice to series explicitly rated for it, such as ZP-A. Light oil or fluid grease opens more options.
Specify monitoring. Decide whether a visual cycle pin is enough, or whether a proximity switch connected to a PLC is required for automated fault detection.
Consider the environment. Corrosive, high-temperature or wash-down environments may need stainless steel or zinc-nickel plated blocks.

For a worked sizing example covering a 12-point CNC machine, see the progressive distributor system design guide. If you need help matching a distributor to an existing pump or manifold, request a quote and include the pump model, lubricant grade and point count.

Installation and Monitoring Basics

Progressive distributors are relatively simple to install, but a few rules prevent common field problems:

Keep main lines short. For grease, keep the main feed line under approximately 30 m to avoid excessive pressure drop and fill time.
Use the recommended tube size. Undersized tubes raise back-pressure and can stop the piston train; oversized tubes increase fill time and waste lubricant.
Bleed the system. After any service, loosen each outlet fitting and run the pump until continuous lubricant flows from every point before tightening.
Set a cycle timeout. If a proximity switch is installed, program the controller to alarm if the end-section pin does not move within the expected cycle time.
Avoid mixing unmatched series. Different families have different displacement per cycle. Mixing them on the same feed line can over- or under-lubricate individual points.

Frequently Asked Questions

What is the difference between a progressive distributor and a divider valve?
The terms are often used interchangeably. “Progressive distributor” emphasizes the sequential piston metering action, while “divider valve” is a broader term for any valve that splits pump output. ISOHITECH lists both progressive blocks and divider valves to cover different customer naming conventions.

How many outlets can one progressive distributor serve?
Most ISOHITECH progressive distributors are modular and support 3–24 outlets in a single assembly. Very large systems can use secondary distributors fed from a primary distributor to reach 100 or more points.

Can progressive distributors handle both oil and grease?
Yes, depending on the series. JPQ, ZPA and DJF families handle oil and grease. ZP-A supports greases up to NLGI #3. Always confirm the lubricant grade against the product specification before ordering.

What happens if one outlet is blocked?
The mechanical piston train stops. This is a deliberate safety feature. With a cycle pin or proximity switch on the end section, the stop becomes an electrical alarm that alerts maintenance before equipment is damaged.

Are these distributors direct replacements for Lincoln, SKF or Bijur Delimon valves?
Several ISOHITECH series, including the Mono block and SSV replacement valves, are dimensionally and functionally compatible with common Lincoln Quicklub / SSV systems. Always compare port spacing, outlet count and displacement before substituting.

How do I request a quote for a progressive distributor system?
Use the contact form and provide the pump type or flow rate, lubricant grade, number of lubrication points, maximum working pressure and any environmental constraints. ISOHITECH will recommend a distributor family and outlet configuration.

Guides & how-tos

Progressive Lubrication Systems Guide

Guides & how-tos

Grease Distributor Block Working Principle and Selection Guide
Grease Manifold Guide: Types, Applications & Maintenance
Progressive Distributor Block Seasonal Maintenance
Grease Distributor Block Installation Guide
How to Size and Select Grease Distributor Blocks: A Technical Guide for Industrial Applications
Grease Manifold Block Selection Guide: Remote, Progressive & Dual-Line
Progressive Distributor Guide: Types & Selection