ESI
Provisional entry — research in progress
This page was generated automatically from cited public sources and hasn't completed the full research pass yet. Every specification shown carries its source; more detail is added as research completes.
The SR20 is a Holmatro Spider Range power unit. The SR20 has a 2-output configuration. The SR20 Electric is a 2-output variant.[1]
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The SR20 is a hydraulic power unit from the Holmatro Spider range of pumps. The SR20 provides hydraulic fluid under pressure to power rescue tools such as cutters, spreaders, and rams. The unit is available in two configurations: a standard gasoline-powered version and an electric-powered version.[1]
Hydraulic power units like the SR20 operate by using a pump to pressurize hydraulic fluid, which is then delivered through hoses to connected rescue tools. The pump in the SR20 is a three-stage design, a technology common across Holmatro Spider range pumps, which provides high flow at low pressure for rapid tool extension and high pressure for cutting or spreading force. The unit incorporates a large hydraulic oil reservoir with a sight indicator for easy fluid-level checking, and it is designed to be quiet and lightweight for transport and storage.[1]
The SR20 features two output ports, each independently controllable, allowing an operator to run two tools sequentially or simultaneously. The power unit is equipped with a soft-drip carrying handle intended to minimize spillage during movement. The unit supports both CORE and Twin Line hose connection systems for compatibility with various Holmatro rescue tools.[1]
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| SR20 Electric | — | — | Listed as an electric 2-output version. | rtss.esiequipment.com[1] |
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The SR20 is a two-output power unit, capable of supplying hydraulic power to two separate tools simultaneously.[1]
The SR20 is available in both a gasoline-powered version and an electric-powered version.[1]
The SR20 supports both CORE and Twin Line hose connection systems for compatibility with Holmatro rescue tools.[1]
The SR20 uses three-stage pump technology, which provides high flow at low pressure for fast tool extension and high pressure for cutting or spreading force.[1]
The following facts about the SR20 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
Fewer than 3 independently cited specifications for the SR20 are on record; the remainder await public documentation.
Answerable by: an OEM datasheet, a cleanroom equipment inventory, or an engineer who operated or installed it
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the SR20 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the SR20 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the SR20 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the SR20 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No research found yet — worked with this tool? Share what you know.
Last updated Oct 9, 2026.