Quzhou Horbon Mining Parts Co., Ltd. is one of the leading manufacturers and suppliers of cone crusher locking nut in China. With abundant experience, we are committed to providing high quality customized service and OEM service to global clients. Welcome to buy advanced cone crusher locking nut made in China here from our factory. Contact us for quotation.
Introduction
The Cone Crusher Locking Nut refers to the top-mounted locking mechanism used to secure the feed cone assembly, preventing loosening under the repeated impact and vibration loads generated during crushing operation. In certain cone crusher series - notably the MHP300 - this locking function is fulfilled not by a conventional nut, but by a dedicated locking bolt assembly (listed in the original manual as "BOLT, LOCK"), paired with a hexagonal screw and spring washer to form a complete anti-loosening system.
Quzhou Horbon Mining Parts Co., Ltd. manufactures this cone crusher locking nut assembly as a direct replacement for MHP300 series cone crushers, engineered from alloy steel to handle the sustained clamping force required at the feed cone position.
Advantages
Complete Fastener Set Available
We can supply the lock bolt together with its associated M30×100 hexagonal screw and spring washer as a matched set, so buyers aren't left sourcing individual fasteners separately.
Alloy Steel Build
Constructed from alloy steel to resist deformation and fatigue under the cyclical impact loading characteristic of feed cone operation.
Custom Material Ratio Support
For operations facing unusually abrasive or high-impact feed material, our lab and smelting facility can adjust the alloy composition to your specification.
Engineering Support for Wear Optimization
Our technical team can review your actual operating conditions (e.g., extreme abrasion or high impact load) and recommend design or material adjustments to extend service life.
Structural Precision for MHP300 Locking System
Unlike simpler nut-style locking components used on other crusher series, the MHP300 locking system uses a bolt-and-washer configuration. We manufacture each element - the lock bolt, hexagonal screw, and spring washer - to the correct dimensional relationship so this cone crusher locking nut assembly performs as designed.
Applications
The cone crusher locking nut / locking bolt system is a critical maintenance item for:
MHP300 cone crusher operators requiring feed cone assembly maintenance or rebuild
Mining and quarry operations running high-impact feed material where fastener loosening is a recurring concern
Maintenance teams standardizing on OEM-equivalent locking hardware to reduce unplanned stoppages from loosened feed cone assemblies
Distributors and equipment service providers stocking MHP300-compatible spare parts
Specifications
|
Parameter |
Detail |
|
Assembly Section |
Feed Cone Assembly |
|
Position |
Position 1 |
|
Part Name (OEM) |
BOLT, LOCK |
|
Item Code |
3191030076 |
|
Quantity |
1 pc |
|
Weight |
24 kg |
|
Material |
Alloy steel |
|
Associated Fastener 1 |
Hexagonal Screw M30×100 (Item Code 6101020125, Qty 1, Weight 0.7 kg) |
|
Associated Fastener 2 |
Spring Washer 30 (Item Code 6103110037, Qty 1) |
|
Dimensions (thread pitch, length) |
Subject to actual drawing / inquiry confirmation |
|
MOQ |
5 pieces |
|
Lead Time |
15–30 days |
|
Trade Terms |
FOB, CIF |
|
Shipping Ports |
Shanghai, Ningbo |
Frequently Asked Questions
1. Why does MHP300 use a "locking bolt" instead of a standard nut like other cone crusher series?
The MHP300 feed cone assembly uses a bolt-and-washer locking configuration (BOLT, LOCK plus a hex screw and spring washer) rather than a single nut, as specified in the original MHP300 manual. This is one reason buyers searching for a cone crusher locking nut for MHP300 need to confirm the structural type before ordering, since it is not interchangeable with CC-series head nuts.
2. What fasteners are needed alongside the lock bolt for proper installation?
The complete set includes the lock bolt (item code 3191030076), a hexagonal screw M30×100 (6101020125), and a spring washer 30 (6103110037). We recommend ordering the full set to ensure correct anti-loosening performance.
3. How much does the MHP300 lock bolt weigh, and why does that matter for shipping?
The lock bolt itself weighs 24 kg. This is relevant for freight cost estimation and packaging planning, particularly for smaller consolidated orders.
4. What material is the locking bolt made from, and can it be customized?
It is manufactured from alloy steel. If your operating conditions require a specific alloy composition - for example, due to unusually abrasive feed material - our lab can produce a custom material ratio based on your specification.
5. How often should the cone crusher locking nut and its fasteners be inspected or replaced?
Inspection frequency depends on feed material abrasiveness and impact intensity at your site. We recommend checking for thread wear or reduced clamping tension during scheduled feed cone maintenance, and replacing the fastener set if looseness or deformation is observed.
6. Do you offer reverse engineering if we only have a worn original part?
Yes, our technical team supports reverse engineering from a physical sample, typically producing an initial 2D/3D draft drawing within about 3 days of receiving the part or measurements.
7. What is your minimum order quantity for this locking bolt assembly?
Our MOQ is 5 pieces, applicable to the full fastener set or individual components as needed.
8. What quality checks are performed before shipment?
Each part undergoes spectral material analysis, hardness (HRC) testing, three-coordinate dimensional inspection, and flaw detection. Third-party inspection is available on request, though we do not currently hold fixed third-party certifications such as CE or ISO.
9. What is your policy if a part is found defective after delivery?
There is no fixed warranty period, but confirmed quality issues are resolved through free replacement of the affected components.
10. Can you supply this part with custom branding for distributors?
Yes, we support laser-marked logo customization on request, along with custom export packaging (fumigated wood crate or iron frame) suited to distributor and OEM branding needs.
Need a cone crusher locking nut assembly for your crusher feed cone? Submit an inquiry with your machine details, and our team will confirm the correct fastener set and provide a quotation with lead time
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