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Cat 735B hydraulic cylinder seal kit
, Premium hydraulic cylinder seals
, 745 735 hydraulic cylinder repair kit
1. Quick Details of seal 217-9894:
| Part NO. |
217-9894 |
| Machine |
dump truck |
| Size |
OEM |
| Material |
Moisture-Resistant NBR |
| Oil seal type |
SEAL KIT
|
2. 217-9894 parts on group :
| NO. |
PART NO. |
PRAT NAME |
QTY |
| 1 |
167-2306 |
SEAL |
1 |
| 2 |
374-3664 |
SEAL |
1 |
| 3 |
167-2199 |
SEAL |
1 |
| 4 |
1K-7095 |
SEAL |
1 |
| 5 |
3E-6703 |
O-RING |
1 |
| 6 |
140-0249 |
SEAL |
1 |
| 7 |
4J-3745 |
SEAL |
1 |
| 8 |
495-8197 |
SEAL |
1 |
3. 217-9894 picture:
4. Service part number :
| PART NO. |
PART NO. |
Part NO. |
| 5J8325 |
1790464 |
8C5176 |
| 6J7167 |
277-9940 |
8C5175 |
| 8200506 |
152-3968 |
1H7339 |
| 5J8200 |
326-7289 |
8T9528 |
| 6J6917 |
6V5393 |
5K5129 |
| 2J1411 |
5P4076 |
6J3134 |
| 5J8300 |
1237272 |
2N5243 |
| 5F3999 |
1411774 |
6V-9746 |
| 1S0668 |
2R0098 |
3J-1907 |
| 1672201 |
335879 |
1011983 |
| 304606 |
5J8150 |
4J5267 |
5. FAQ
Q: What are the natural color and surface features of each part without additional paint or pigment?
A: Moisture-resistant NBR parts are deep black with a smooth matte surface and soft elasticity. High-toughness PU seals are light amber, with a compact and solid texture. Mineral-oxide filled PTFE rings are pale beige, mixed with tiny fine particle texture from internal fillers. Multi-layer felt composite guide rings are natural taupe, with obvious layered and fibrous texture on the surface.
Q: What prominent advantages does high-toughness PU have in forestry hydraulic cylinders?
A: This PU material owns excellent tear resistance and fatigue resilience. When the equipment clamps, lifts and transports heavy logs repeatedly, it closely fits the reciprocating parts inside the cylinder. It can firmly lock high-pressure hydraulic fluid and keep intact under heavy load and irregular impact, avoiding leakage even after tens of thousands of cyclic movements in complex woodland conditions.
Q: What role does mineral-oxide filled PTFE play when paired with PU main seals?
A: Mineral oxide fillers enhance the overall rigidity and pressure bearing capacity of PTFE. It can fully fill the tiny gaps inside piston mounting grooves. When grabbing oversized logs triggers sudden hydraulic pressure surges, this material disperses instantaneous pressure evenly, prevents the PU seal lip from being squeezed and damaged, and also stabilizes the overall running state of the cylinder.
Q: How does moisture-resistant NBR differ from ordinary rubber materials?
A: Besides basic oil resistance, this upgraded NBR is optimized for humid environments. It can resist the erosion of dew, moist air and occasional splashed water in forests. It will not absorb moisture, swell or lose elasticity easily after long-term use, and still maintains stable sealing performance in foggy and rainy woodland working days.
Q: Where are the moisture-resistant NBR seals mainly installed on the hydraulic cylinder?
A: These rubber components are mostly mounted on fixed connection positions, including cylinder end cover flanges, hydraulic pipe joints and static gaskets. These positions are exposed to humid air and hydraulic oil for a long time, so the material’s moisture-proof and oil-resistant performance can be fully exerted here.
Q: What practical effects can multi-layer felt composite guide rings bring during piston movement?
A: Different from traditional woven rings, this felt composite structure has good shock absorption and noise reduction effects. It can absorb lateral force generated by unbalanced log weight, correct minor deviation of the piston, and reduce harsh metal collision and friction noise. It makes the cylinder run more smoothly and quietly while slowing down component wear.
Q: Can customers purchase individual parts separately instead of the full complete kit?
A: We mainly provide full kits for one complete cylinder overhaul. If only several individual parts are damaged and need replacement, you can send us detailed size specifications, and we will arrange separate supply according to your actual demands.
Q: Can these materials adapt to the changeable temperature and humidity in woodland environments?
A: Both mineral-oxide filled PTFE and moisture-resistant NBR have strong environmental adaptability. They remain stable in cool, humid mornings and warm, dry afternoons, and will not fail due to frequent changes of temperature and humidity.
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