A screw compressor that is serviced on a schedule is a boring, predictable, low-cost machine. A compressor serviced on failure is a series of surprises. This guide lays out the three service levels used across the industry — the 1000, 2000, and 4000 hour kits — and what each one should contain, so your next service meets the OEM intent instead of the minimum order size.

Why the intervals exist

The service intervals are not arbitrary. Each interval corresponds to how fast the different components degrade under normal use:

The exact hours for your machine are in the OEM manual. Treat the figures below as the industry-standard skeleton that your manual fills in.

The 1000-hour / first-service kit

The 1000-hour service is the compressor's first full service and the regular light service in many fleets. Typical contents:

Operators running in very dusty environments often shorten the air filter attention to the 500-hour or even 250-hour mark, because the air filter is the cheapest component and the most exposed to the environment.

The 2000-hour / mid-level kit

At 2000 hours most compressors graduate to a fuller service:

This is also the sensible checkpoint for oil analysis: a sample at 2000 hours tells you whether the oil and machine are healthy, and gives you the trend baseline for the next intervals.

The 4000-hour / major service kit

At the 4000-hour mark the compressor gets its major annual-style service:

Many OEM maintenance plans anchor the 4000-hour service to the air end's major inspection cycle. If your compressor is approaching its first 4000-hour service, budget both time and spares, and schedule it — skipping a major service is how medium failures become catastrophic ones.

Building a service kit so the shutdown is never short

The most common reason a planned service turns into a production outage is the absence of a ready kit. Prepare in advance:

A compressor kit is not a luxury purchase; it is the inventory that keeps a scheduled shutdown a four-hour job instead of a four-day one.

Service kit contents at a glance

How Kenrax supports your schedule

Kenrax makes the air filters, oil filters, and separators that go in 1000/2000/4000-hour kits for all the major screw compressor brands, built to the OEM media specification and cross-referenced to your part numbers. Order the full kit on WhatsApp and we confirm fitment before dispatch. You can order these directly from Kenrax on WhatsApp (or check price on the product pages).

The one-line summary

Service at the OEM intervals, carry the three-level kit contents, and treat the 4000-hour service as a planned major event. A compressor on a calendar is cheap to run; a compressor on a crisis is not.