Quzhou Horbon Mining Parts Co., Ltd. is one of the leading manufacturers and suppliers of labyrinth cover for non-locating bearing in China. With abundant experience, we are committed to providing high quality customized service and OEM service to global clients. Welcome to buy advanced labyrinth cover for non-locating bearing made in China here from our factory. Contact us for quotation.
Introduction
The non-locating bearing on a jaw crusher eccentricity shaft is the "floating" end - it isn't fixed axially, so it can shift slightly along the shaft as heat builds up during operation and the shaft expands. That small amount of movement is normal and necessary, but it means the seal around this housing has a harder job than the fixed side: it has to keep dust and moisture out across a range of positions, not just one. A Labyrinth Cover for Non-Locating Bearing is built around that requirement, supplied as a set to match the floating-side housing rather than borrowed from the fixed-side spec.
Horbon produces this cover using the same wear-grade materials and machining process as the rest of our eccentricity shaft spares, with the quantity and mounting sized specifically for the non-locating side of the assembly.
Key Advantages
Sized for shaft float, not just fit – matched to the floating-side housing so the seal stays effective across the shaft's normal axial movement, not just at a single fixed position.
Full quantity per housing – matches the standard count used on the non-locating side, so you order the correct amount for one housing without guesswork.
Non-contact labyrinth design – groove-based sealing that keeps working without the wear a rubbing seal would take on from repeated shaft movement.
Design optimization on request – if your mine's working conditions involve extreme wear or high impact, our roughly 20-person technical team can adjust the design or material to extend service life for your specific application.
Custom alloy composition available – our lab and smelting furnace can produce material to a specified ratio, not just our two standard steel grades.
Lubrication-compatible assembly – works alongside the housing's grease nipple for ongoing lubrication, so the seal and the lubrication path are serviced together rather than treated as separate maintenance items.
In-process quality control – spectral testing, HRC hardness testing, three-coordinate dimensional inspection, and flaw detection before shipment.
Applications
This part is specified wherever the non-locating side of a jaw crusher's eccentricity shaft needs resealing or upgrading:
Machines running in high-vibration or thermally variable conditions where shaft float is more pronounced
Mobile crushers with frequent startup/shutdown cycles that put the floating side through repeated thermal expansion and contraction
Full shaft rebuilds serviced alongside the locating-side seal and housing
Sites reporting premature seal wear on the floating side, where a design or material review may be worth requesting
Parts Assembly Reference
|
Item |
Detail |
|
Component |
Labyrinth cover, non-locating (floating) bearing side |
|
Position in assembly |
Floating-side bearing housing, accommodates axial shaft movement |
|
Quantity per housing |
4 pieces |
|
Material |
High manganese steel or chrome-moly alloy steel as standard; custom alloy composition available |
|
Process |
Precision casting + CNC machining + heat treatment quenching |
|
Seal type |
Non-contact, multi-groove labyrinth |
|
Related components |
Non-locating-side bearing housing, grease nipple, standard hex bolts and plain washers |
|
MOQ |
5 pieces |
|
Lead time |
15–30 days (longer for custom material or design changes) |
|
Trade terms |
FOB / CIF via Shanghai or Ningbo |
|
Exact dimensions |
Confirmed against your drawing or part number - contact us for a quote |
Questions Buyers Usually Ask
Q: 1. Why does the non-locating side need more cover pieces than the locating side?
A: The floating bearing housing has a different mounting arrangement to accommodate axial shaft movement, which is why it uses a different piece count than the fixed side - 4 pieces here versus 2 on the locating side.
Q: 2. What does "non-locating" or "floating" bearing actually mean?
A: It's the bearing that isn't fixed axially. As the shaft heats up during operation and expands slightly, this bearing is free to shift a small amount so it doesn't bind or overload - the opposite of the locating bearing, which stays fixed in place.
Q: 3. Can the design be adjusted for harsher working conditions?
A: Yes. If your site sees extreme wear or high impact loads, our technical team can review the design or material and propose changes aimed at extending service life - this typically starts with you describing the working conditions and us proposing options.
Q: 4. Do you offer this in a custom material grade?
A: Yes, beyond our standard high manganese steel and chrome-moly alloy steel, our lab and smelting furnace can produce a custom alloy composition to a specified ratio.
Q: 5. Is a Labyrinth Cover for Non-Locating Bearing sold separately from the bearing housing?
A: Yes, it can be ordered on its own or together with the non-locating-side bearing housing and related hardware as a full set - whichever suits your repair.
Q: 6. How does lubrication work with this seal?
A: The housing is maintained through a grease nipple, so lubrication and sealing are serviced as part of the same maintenance routine rather than as separate systems.
Q: 7. What if I only have a worn sample, not a drawing?
A: Our technical team can reverse-engineer the part from a worn sample or photos and produce an initial drawing within a few days before production begins.
Q: 8. What's the MOQ and lead time?
A: MOQ is 5 pieces. Standard lead time is 15–30 days; custom material or design changes can extend that, and we'll confirm the timeline before you order.
Q: 9. What if the replacement part fails to seal correctly?
A: If it's a confirmed quality issue, we provide free replacement along with installation guidance and video/photo technical support.
Q: 10. Can you supply matched sets for both the locating and non-locating sides together?
A: Yes - many rebuild orders include both sides plus the bearing housings and fasteners in one shipment, produced from the same batch for consistent fit.
Request a Quote
Describe your working conditions and send a drawing, part number, or photo of the worn part - we'll confirm the fit, discuss whether a design review makes sense, and quote a factory-direct price. Submit an inquiry through the form below.
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