Quzhou Horbon Mining Parts Co., Ltd. is one of the leading manufacturers and suppliers of vertical shaft impactor lower frame in China. With abundant experience, we are committed to providing high quality customized service and OEM service to global clients. Welcome to buy advanced vertical shaft impactor lower frame made in China here from our factory. Contact us for quotation.
VSI Lower Frame Replacement - Complete Base Assembly, Factory Sourced
Why a Lower Frame Problem Doesn't Behave Like Normal Wear
Rotor tips and anvils wear down gradually - output drifts, and you see it coming on a trend chart. A failing Vertical Shaft Impactor Lower Frame doesn't give you that warning. Once the base structure loses dimensional integrity, rotor alignment shifts, bearing loads go uneven, and the drivetrain starts absorbing forces it wasn't built to handle. At that point the machine isn't degrading - it's heading toward a forced shutdown, and the only thing you can still control is how fast you get a correctly specified replacement on site.
This page lists the full 29-item base assembly available from Horbon: part codes, quantities, material choices, and how to order them.
What Makes This Sourcing Approach Different
Everything comes from one BOM, one factory. The lower frame assembly includes structural castings, three separate lining plate types, wedge-and-pin retention parts, and a full M10–M24 fastener range. Rather than buying wear plates from one supplier and hardware from another - the usual pattern with trading companies that only stock the fast-moving items - all 29 line items are produced or held in stock at a single facility.
Steel composition is verified, not taken on faith. Before any cutting or machining starts, incoming steel is tested by OES spectrometry to confirm actual chemical composition. This isn't limited to the visible wear parts - it applies equally to structural castings and to the fastener stock.
A missing drawing doesn't stall the order. Ship us a worn component and our 20-person engineering team will remodel it and return an approved 2D/3D drawing for your sign-off before anything goes into production. You don't need to supply technical drawings from your side.
Branding travels with the part, not just the box. Structural components can be laser-marked with your logo, and export crating - fumigated timber or steel rack - can be arranged per shipment for dealer and distributor orders.
Matching the Frame Build to the Feed Material
The right specification depends heavily on what's actually running through the machine:
Manufactured sand (M-sand) production puts lining plates through high-cycle fatigue loading. Having the Type A/B/C variants matched to their specific wear zones helps distribute that fatigue more evenly rather than concentrating it on one plate.
Hard-rock metallic ore crushing - iron, copper - generates sharper impact peaks. In this environment, Cr-Mo alloy steel generally outperforms standard Mn13 because it resists the abrasive component of that impact better.
Construction and demolition recycling produces a mixed abrasion-and-impact load that's harder to optimize for with a single-grade plate. A bi-metallic composite tends to extend the interval between changes in this application.
OEM dealer and service contractor supply chains often need white-label production - custom marking and export packaging - rather than standard retail packaging.
Common Questions
Q: My machine isn't labeled explicitly as a "VSI" - can I still confirm fit?
A: Send us the OEM part number stamped on your current component, or a dimensional drawing, and we'll check it against our tooling library. If there's no direct match on file, our engineering team can reverse-engineer the part from a physical sample, with an initial drawing back to you in about three working days.
Q: Do I have to order the full 29-item set, or can I get just two or three parts?
A: Each part code stands on its own - you're not required to order the whole BOM together. The only limit is a 5-piece minimum per code; a single purchase order can combine as many different codes as you need without hitting that minimum on each one individually.
Q: Is there a real performance difference between Mn13 and Cr-Mo for the lining plates?
A: Yes. Mn13 hardens progressively as it takes repeated impact, which makes it well suited to high-throughput sand and aggregate work. Cr-Mo alloy steel starts with higher as-cast hardness and holds up better against surface abrasion, so it's the better choice for harder, more abrasive material like silica-rich ore. If you have wear data from your own operation, we can also produce to a custom alloy specification built around it.
Q: What quality documentation actually comes with a shipment?
A: Every order includes an OES spectrometry report on the raw material, HRC hardness test results, and a CMM dimensional report for the structural parts. Ultrasonic or magnetic-particle NDT and third-party inspection through SGS, BV, or an inspector you nominate can be added on request.
Q: How does branding work if I'm reselling these parts?
A: Your logo is laser-marked directly onto structural components as part of the manufacturing process - there's no separate branding step afterward. Crating (fumigated timber or steel rack) carries your labeling, and unless you tell us otherwise, none of our own branding appears on documentation that goes to your end customer.
Q: What happens if a part fails during the warranty period?
A: Confirmed manufacturing defects get a free replacement shipment. Technical questions are answered on a 7×24 basis, and field support - including remote dimensional troubleshooting if something doesn't seat correctly on installation - is available through written and video guidance.
Get a Quote
Send us the part code(s) you need, quantities, destination port, and any material or OEM requirements. Technical response comes back within 24 business hours. Whether you're sourcing a single lining plate or the complete Vertical Shaft Impactor Lower Frame assembly, the process and lead times above apply the same way.
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