Hydraulic Filter Engineering Hub

Hydraulic Filter Cross-Reference Matrix

High-pressure hydraulic return and suction line filters for industrial and ag machinery.

Verified Hydraulic Filter Part References (260)

Select any reference for side-by-side engineering specs.
Rexroth1 Matches

99122229PWR10A000M

Height224 mm (8.82 in)
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Baldwin3 Matches

BT8851-MPG

Thread1 3/8-12 UN
Gasket OD70 mm (2.76 in)
Height240 mm (9.45 in)
Bypass Relief50 PSI (3.45 bar)
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SF-Filter2 Matches

CSH50

Thread3/4 ISO
Height146 mm (5.75 in)
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Parker

FC1002Q020BS16

Thread1 -12 UNF
Height140 mm (5.51 in)
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Fleetguard30 Matches

HF6315

Thread3/4 -16 UNF
Height148 mm (5.83 in)
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Fleetguard10 Matches

HF6329

Thread1 1/2 ISO
Height195 mm (7.68 in)
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Fleetguard142 Matches

HF6510

Thread1 3/8-12 UN
Gasket OD70 mm (2.76 in)
Height178 mm (7.01 in)
Bypass Relief25 PSI (1.72 bar)
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SF-Filter

HY15863

Thread2 1/2 ISO
Height200 mm (7.87 in)
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SF-Filter

LMP2101BAG1P01

Thread1 1/4 -12 UNF
Height360 mm (14.17 in)
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Donaldson1 Matches

P171891

Thread1 1/2 ISO
Height113 mm (4.45 in)
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Technical Reference Standard

Hydraulic Filter & High-Pressure Circuit Guide

Collapse pressure ratings, Beta ratios (ISO 16889), and cold-start return line bypass.

1

Element Collapse Pressure (ISO 2941)

Standard return line filters are rated for 150-300 PSI collapse pressure, whereas high-pressure inline filters must withstand up to 3,000 PSI pressure spikes without rupture.

2

Beta Ratio Efficiency (Beta(x) >= 1000)

A Beta ratio rating of Beta(10) >= 1000 indicates that for every 1,000 particles measuring 10 microns, 999 are captured (99.9% filtration efficiency).

3

Cold Start Viscosity Relief

Hydraulic oil at -20C exhibits high viscosity. Integrated bypass valves must open smoothly during initial startup to prevent media blowout before fluid reaches operating temperature.

4

Fluid & Seal Compatibility

Fluids including standard mineral hydraulic oil, synthetic ester (HEES), and water glycol require specific gasket compounds (Buna-N Nitrile vs Viton/FKM).

Frequently Asked Questions

Hydraulic Filter Interchange FAQ

What is the difference between a suction filter and a return line filter?

Suction filters protect the hydraulic pump inlet and use coarse 100-mesh wire screens to avoid pump cavitation. Return line filters use fine 5-15 micron synthetic media to capture system wear debris.

How do I convert hydraulic filter part numbers across Baldwin, Donaldson, and Parker?

Cross-reference by thread size, overall height, gasket outer diameter, and collapse pressure rating using the FilterEquiv interchange matrix.

What does a Beta ratio of Beta(6) >= 200 mean on a hydraulic filter?

It means the filter is 99.5% efficient at capturing particles 6 microns and larger under multi-pass ISO 16889 laboratory testing standards.

Can standard oil filters be used on hydraulic systems?

Never. Engine oil filters lack the collapse strength and synthetic micron media required to withstand high-pressure hydraulic fluid cycles and flow rates.

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