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Hydraulic Buying Guides

Ordering the wrong hydraulic part usually comes down to one missed measurement. These guides walk you through identifying and sizing components before you buy — measuring a cylinder and picking its mounting style, identifying hose fitting types, matching a gear pump for replacement, and choosing log splitter tonnage. Each one is based on the questions our team answers by phone every week. Read the guide, take your measurements, and order with confidence.

Need help picking a part?

Call (800) 823-4937

All articles13 articles

Vickers Vane Pump Replacement & Cross-Reference: Match Your V-Series Vickers Vane Pump Replacement & Cross-Reference: Match Your V-Series Replace a Vickers vane pump by spec, not part number: match displacement, pressure, shaft, ports, rotation and mount, then cross-reference your V-series…
Hydraulic Power Unit Buying Guide: AC vs DC Hydraulic Power Unit Buying Guide: AC vs DC Hydraulic power unit buying guide: pick DC (12V/24V) for mobile work or AC (115V/230V) for continuous duty, then match flow, pressure, and…
Hydraulic Hay Bale Spear & Spike Buying Guide Hydraulic Hay Bale Spear & Spike Buying Guide Hydraulic hay bale spear or bolt-in spike? Match the mount, spear length, and lift rating to your round bales, then compare Pierce…
How to Size a Log Splitter: Tonnage by Log Diameter How to Size a Log Splitter: Tonnage by Log Diameter What size log splitter do you need? Most seasoned firewood takes 20-25 ton. Size by log diameter and species, then match two-stage…
Axial Piston Pumps: Basics, Specs & Replacement Axial Piston Pumps: Basics, Specs & Replacement Axial piston pump basics: specs to match, how the pump types compare, and the Bosch Rexroth pump that replaces the Cat 458-8659,…
How to Pick Mounting Style for Your Hydraulic Cylinder How to Pick Mounting Style for Your Hydraulic Cylinder The first step in selecting a replacement cylinder is identifying what style of cylinder that you currently have.  While many manufacturers utilize…
How to Identify the Right Hydraulic Hose Fitting Type How to Identify the Right Hydraulic Hose Fitting Type Why Hydraulic Fittings Are So Important Even though hydraulic fittings are tiny, they do a huge job of making machines work well…
Common 12 Volt DC Motors and Their Differences Common 12 Volt DC Motors and Their Differences MONARCH/BUCHER/DYNAJACK 4.5″ Diameter Motors The Monarch 08111-S is the standard electric motor used on Monarch 12V Power Units. This motor is the…
How to Pick Your Log Splitter Tonnage How to Pick Your Log Splitter Tonnage Dry Tonnage Required Choosing the right tonnage for splitting dry wood is crucial. Generally, dry wood requires less force than wet wood.…
How to Measure Gear Pump For a Replacement How to Measure Gear Pump For a Replacement Sizing Up Simple Gear Pumps: Please review the individual categories below for further explanation and identification. Mounting Flange Common bolting patterns used…
How to Identify Type of Cylinder How to Identify Type of Cylinder Tie-Rod Style Cylinder If your cylinder is held together with four large bolts, you are lucky because this is the most common…
How to Find Seal Kit for your Hydraulic Cylinder How to Find Seal Kit for your Hydraulic Cylinder Like all components, seals wear out over time, which can lead to reduced performance or even system failures. This is where hydraulic…
How to Measure a Hydraulic Cylinder How to Measure a Hydraulic Cylinder How To Measure Your Hydraulic Cylinder Check out this (link) to let us know what kind of cylinder you have or please…

More resources

All Resources All Resources Every guide, chart, and how-to in one place. View all
Hydraulic 101 Hydraulic 101 Fundamentals, troubleshooting, and step-by-step repair guides — from basic hydraulic theory to rebuilding a cylinder at your own bench. 29 guides
Tools Tools O-ring size charts, EOH wiring diagrams, cheat sheets, and a terminology glossary — quick references for the shop floor. 6 guides
Hydraulic Calculator Hydraulic Calculator Every formula you need to spec your unit. Open tool
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