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686236 Hydraulic Return Filter
Ultimate Contamination Control for Manitou, Wacker Neuson, and Heavy-Duty Industrial Machinery
Precision Engineered for Hydraulic System Integrity
In modern high-pressure hydraulic circuits, the 686236 Hydraulic Filter serves as the critical line of defense against microscopic particulate ingress. Designed specifically for return-line applications, this element ensures that fluid returning to the reservoir meets the stringent ISO 4406 cleanliness standards required by sensitive proportional valves and high-torque hydrostatic drives.
By utilizing Synthetic Melt-blown Media, the 686236 manages the dual challenge of maintaining high flow rates while capturing silt-sized particles. Unlike standard cellulose filters, our composite structure provides Pressure Pulsation Resilience, preventing media migration and "unloading" of captured contaminants during cold starts or rapid directional changes in heavy-loading machinery.
1. Multi-Layer Synthetic Media
Features a high-strength composite fiber matrix. The multi-gradient pore structure maximizes Dirt-Holding Capacity (DHC), ensuring the filter does not reach bypass pressure prematurely even in dusty construction environments.
2. Advanced Pleat Geometry
The extended cylindrical pleated structure expands the effective filtration area. This logic reduces Flux Density across the media, maintaining an extremely low initial ΔP (differential pressure) and preventing energy loss.
3. Reinforced Polymer End Caps
Our black polymer caps are engineered for high Chemical Resistance and thermal stability. They effectively absorb mechanical vibration and hydraulic "water hammer" effects, preventing structural bypass leaks.
4. Extended Service Life
Tested under ISO 16889 multi-pass standards, the 686236 offers a superior Beta Ratio (βx(c)). This translates to fewer filter changes, reduced maintenance downtime, and total protection for your hydraulic pumps.
Technical Specifications
| Parameter | Value / Standard |
|---|---|
| Filter Style | Return Filter Element |
| Media Type | Synthetic Micro-glass (Melt-blown) |
| Efficiency 1 | 17µ @ β200 (99.5% efficiency) |
| Efficiency 2 | 20µ @ β1000 (99.9% efficiency) |
| Outer Diameter | 63.0 mm (2.48 inches) |
| Inner Diameter | 28.3 mm (1.11 inches) |
| Length | 214.0 mm (8.43 inches) |
| Δ Collapse Pressure | 10 bar (145 psi) |
| Seal Material | Nitrile (NBR) High-Grade Elastomer |
| Temperature Range | -30°C to +100°C (-22°F to +212°F) |
OE Number & Global Cross-Reference
This premium element is a 1:1 direct replacement for the following OEM and Aftermarket brands, ensuring perfect fit and function.
Broad Application Spectrum
1. MANITOU (Telehandlers & Forklifts)
MT Series (420 H, 625 Comfort/Easy, 635 HSL), MLT 625-75 H, BT 420/425, TMT 25/27, SLT 415/420.
2. WACKER NEUSON / NEUSON
Dumpers 1001-6001, DW 20/30/40, Telehandlers 1245, TH 412.
3. THWAITES (Dumpers)
Mach Series (201, 2071, 320, 464, 580), AD Series (23 TG, 35, 4.5 T).
4. SCHAFFER (Loaders)
2000 Series (2026, 2033), 3000 Series (3026-3150), 4000 Series (4042-4160).
5. KRAMER / WEIDEMANN / KUBOTA / KNIKMOPS
Kramer 5035/5055, Weidemann T 4512, Kubota RT 140, Knikmops KM 130/250.
6. SPECIALIZED EQUIPMENT
Putzmeister SP 11, Mathieu Yno Sweepers, Noremat Optima, Atlas-Weycor AR 65/420.
Expert Maintenance Insight
To maximize the service life of your hydraulic pumps and motors, we recommend monitoring the differential pressure indicator. Replace the 686236 element immediately if the ΔP exceeds 1.5 bar or during every 500-hour service interval. Always ensure the Nitrile seal is lightly lubricated with hydraulic fluid before installation to prevent torque-shearing.
Direct Factory Supply & Global Logistics
Ensure zero-leakage performance and long-term component protection with our certified 686236 filters.
Guaranteed OEM Compatibility | ISO 9001:2015 Quality Management | Rapid Worldwide Shipping
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