Impact Crusher Wedge Set / Locking Wedges
Blow bar material mismatch causes cracking, fast wear or rotor imbalance.
Impact Crusher Wedge Set / Locking Wedges — HSI impact crusher wear parts for Metso NP, Sandvik CI/QI, Hazemag, Kleemann and Rubble Master. OEM-compatible supply, custom casting and machining, material certificates included.
Secures blow bars to the rotor. A loose blow bar is a projectile — catastrophic failure. Always replace wedges during blow bar change-out — reusing worn wedges is the #1 cause of blow bar ejection. Precision-cast in high-strength alloy steel or ductile iron. Upper, lower, side, and complete wedge kits to match rotor slot geometry exactly.
For a quote, send the OEM part number, equipment model, drawing or worn-part photos. We can match Impact Crusher Wedge Set / Locking Wedges by dimensions, alloy grade, operating position and application conditions.
Request a Quote24-hour response · Send drawing or sample
At a glance
Engineers
Check fitment, alloy grade, wear position, drawings and operating conditions before selecting Impact Crusher Wedge Set / Locking Wedges.
Procurement
Quote requests are matched by OEM reference, equipment model, quantity, lead time and export documents.
Quality
Material certificates, hardness checks, dimensional inspection and traceability records can ship with the order.
Send model, OEM reference or drawing. We check the replacement route first.
Supply HSI blow bars, impact plates and apron liners by rotor model, feed material and impact severity.
Before quoting, we check
- Feed size and tramp metal risk
- Chrome, martensitic or ceramic composite grade
- Rotor speed and blow bar seating
Documents we can verify
- ✔ Weight balancing for rotor stability
- ✔ Ceramic insert options for abrasion
- ✔ Grade selection for impact vs wear trade-off
Fitment workflow
Confirm rotor and locking type
Review feed material and tramp risk
Select grade
Check weight and dimensions
RFQ desk
Pricing for Impact Crusher Wedge Set / Locking Wedges
Send the OEM reference, machine model, drawing or worn-part photos. We respond within 24 hours.
What should be checked before selecting Impact Crusher Wedge Set / Locking Wedges?
This section is the working structure for product-level performance data. It avoids fake numbers now, but keeps the page ready for real wear-life, output and cost-per-ton records when you provide them.
| Metric | Needed from buyer | Why it matters |
|---|---|---|
| Impact severity | Feed size, rotor speed and tramp metal risk | Controls whether high chrome, martensitic or ceramic composite is safe. |
| Rotor fitment | Rotor model, locking style and blow bar drawing | Prevents seating failure and rotor imbalance. |
| Feed contamination | Rebar, steel or unknown contamination level | High chrome can crack under severe uncrushable impact. |
Common failure modes we check before recommending this part
Blow bar cracks
Likely cause
Grade too brittle for impact or tramp metal
What we check
Material grade, impact condition and feed contamination.
Rotor vibration
Likely cause
Uneven blow bar weight or seating mismatch
What we check
Part weight, dimensions and locking surface.
Fast wear on one side
Likely cause
Feed distribution or apron setting issue
What we check
Wear pattern, feed point and crusher setting.
What are the full specifications?
Which material is right for your application?
Which Alloy for Your Application?
Impact crushers are abrasion-dominant. High-chrome white iron (Cr26) is the default — NOT manganese steel. Complete selection guide below.
Quick Alloy Picker
Find the right grade in 5 seconds.
Soft Limestone
Cr15
Application-dependent
General (Default)
Cr26
Application-dependent
Abrasive (Granite)
Cr27Mo1
Application-dependent
Extreme (Basalt)
Ceramic Composite
Application-dependent
A. Blow Bar Material Guide — The #1 Decision
| Feed Material | Recommended Grade | Cr% | Hardness | Carbide Vol. | Typical Life | Cost / Ton |
|---|---|---|---|---|---|---|
| Soft Limestone | Mn18Cr2 | 1.7–2.2 | 220–500–550 HB | N/A | Application-dependent | Low |
| Med. Limestone / Dolomite | Cr15 / Martensitic | 14–16 | HRC 52–56 | 15–20% | Application-dependent | Low |
| River Gravel / Round Stone | Cr26 | 25–28 | HRC 58–62 | 25–30% | Application-dependent | Medium |
| Granite / Diorite | Cr27Mo1 | 26–28 | HRC 60–63 | 28–33% | Application-dependent | High |
| Granite — max life | Ceramic Composite | 26–28 + inserts | HRC 60+ / 70+ | 30–35% | Application-dependent | Very High |
| Basalt / Quartzite | Cr27Mo1 / Ceramic | 26–28 | HRC 60–63 | 28–33% | Application-dependent | Very High |
| Recycled Concrete / C&D | Cr26 + Reinforced | 25–28 | HRC 58–62 | 25–30% | Application-dependent | Medium |
| Steel Slag / Hard Slag | TiC / Tungsten Carbide | N/A | HRC 65–70 | 35–45% | Application-dependent | Very High |
| Asphalt / Demo Debris | Cr26 / Cr27Mo1 | 25–28 | HRC 58–62 | 25–30% | Application-dependent | Medium |
| Iron Ore | Cr27Mo1 / Ceramic | 26–28 | HRC 60–63 | 28–33% | Application-dependent | High |
B. Apron & Liner Material Guide
| Part | Position | Recommended Grade | Hardness | Cost / Ton |
|---|---|---|---|---|
| Primary Apron (top) | Coarse feed | Mn18Cr2 | 220–500–550 | Low–Med |
| Secondary/Tertiary Apron | Fine abrasive | Cr26 / Cr27Mo1 | HRC 58–62 | Medium |
| Apron — extreme life | Any position | Ceramic-Tipped Cr26 | HRC 60+ | High |
| Side Liners | Chamber walls | HB400 / Mn18Cr2 | HB 400 / 500 | Low |
| Side Liners — abrasive | Chamber walls | Cr26 | HRC 58–62 | Medium |
| Rotor Protection Plates | Between bars | Cr26 / HB500 | HRC 58–62 / HB500 | Medium |
| Feed/Discharge Chute | Entry + exit | HB400 / Hardox | HB 400 | Low |
True Cost Per Ton Formula
A budget Cr15 blow bar set with frequent change-outs can cost more per ton than a premium Cr27Mo1 or ceramic composite set with extended service life. Always evaluate wear parts by total cost per ton, not by purchase price alone. Contact us with your specific application parameters for a tailored cost analysis.
Five Critical Material Rules for Impact Crushers
① High-chrome iron is the DEFAULT. High-chrome iron is the DEFAULT. Impact crushers are abrasion-dominant — material-to-bar contact is microseconds, too short for Mn steel work-hardening. Cr26 with 25–30% carbide volume provides significantly longer life than Mn18Cr2 in impact applications. Use Mn steel ONLY in primary impactors with feed >300mm.
② Cr15 vs Cr26 vs Cr27Mo1 — Mo pays back. Cr15 vs Cr26 vs Cr27Mo1 — Mo pays back. Molybdenum in Cr27Mo1 maintains hot hardness at operating temperature, extending service life in abrasive granite. Skip Cr15 entirely unless crushing only soft limestone.
③ Ceramic composite = 2\u20133\u00d7 life, but NOT for primary impact. Ceramic composite extends service life significantly, but NOT for primary impact. Ceramic inserts fail catastrophically under high impact (tramp iron or feed >200mm). Best ROI in tertiary crushing or recycling where feed is clean.
④ Blow bar rotation adds 30% life for free. Blow bar rotation adds life for free. Most blow bars are reversible (4 working edges). Operators who rotate on schedule get more total life at zero additional cost — pure operational discipline.
⑤ Apron gap check is critical. Every millimeter of gap increase above specification reduces reduction ratio. An oversized gap creates hidden energy and recirculation costs that compound over time.
Blow Bar Material Comparison
Cr15 (budget): Suitable only for soft limestone. Not recommended for abrasive materials due to low chromium content.
Cr26 (standard): The industry default for aggregates. Balanced wear resistance for most hard rock applications.
Cr27Mo1 (premium): Molybdenum addition improves hot hardness retention. Recommended for abrasive granite, basalt, or quartzite.
Ceramic Composite (max life): Best for clean, <150mm feed in secondary/tertiary crushing. NOT for primary impactors (tramp iron risk). Highest cost per bar, lowest cost per ton in suitable applications.
Which crusher models does this part fit?
Model names show our reference-checking coverage. Final fitment is confirmed against the OEM reference, drawing or part dimensions before production.
Metso
Sandvik
Kleemann
Powerscreen / Terex
Hazemag
Astec / KPI-JCI / Telsmith
Shanbao & Chinese OEM
More International Brands
Why choose ZL Crusher Parts
Foundry-direct. No middleman.
30+ years casting experience. 18,000-ton annual capacity. Every part engineered, poured, heat-treated, machined, and QC-checked in our own Luoyang plant. No outsourcing, no sub-contracting. ISO 9001:2015.
9-step QC. Full traceability.
Spectrometer → metallurgical microscope → impact tester → tensile machine → hardness tester → 3D scanner → ultrasonic → magnetic particle → portable spectrometer. Every inspection report ships with your order.
Global. Trusted by industry leaders.
Exported to 37+ countries across four global regions. Supplying CEMEX, LafargeHolcim, Heidelberg Cement, TATA Steel and POSCO. Official Hardox® Wear Parts Center since 2017.
What are the most common questions about this part?
Can I reuse old wedges with new blow bars? +
No. Reused wedges are the #1 cause of blow bar ejection. Always replace wedges as a set.
Can you match Impact Crusher Wedge Set / Locking Wedges without an OEM part number? +
Yes. Send the machine make and model, worn-part photos, key dimensions or a drawing. We check the fitment route before quoting and confirm what information is still missing.
Which material grade should I choose for Impact Crusher Wedge Set / Locking Wedges? +
Material selection depends on feed material, impact level, abrasion, operating temperature and the position of the part. We compare your application against the current wear pattern before recommending a grade.
What information do you need for a useful quote? +
The fastest quote comes with equipment model, OEM reference if available, quantity, target delivery date, feed material, working position and any photos or drawings of the existing part.
Do you supply certificates and inspection records? +
Yes. Material certificates, chemistry, hardness checks, dimensional inspection and traceability records can be supplied with the order when requested.
What should you prepare before requesting a quote?
- 1 Crusher make, model, and OEM part number
- 2 Feed material type and hardness
- 3 Required quantity and target delivery date
- 4 Special requirements (certifications, custom packaging)
24-hour response · Send drawing or sample
What other crusher wear parts are commonly needed together?
Impact Crusher Blow Bars / Impact Hammers
Impact Crusher Blow Bars / Impact Hammers — HSI impact crusher wear parts for Metso NP, Sandvik CI/QI, Hazemag, Kleemann and Rubble Master. OEM-compatible supply, custom casting and machining, material certificates included.
View details: Impact Crusher Blow Bars / Impact Hammers →Impact Crusher Apron Liners / Breaker Plates
Impact Crusher Apron Liners / Breaker Plates — HSI impact crusher wear parts for Metso NP, Sandvik CI/QI, Hazemag, Kleemann and Rubble Master. OEM-compatible supply, custom casting and machining, material certificates included.
View details: Impact Crusher Apron Liners / Breaker Plates →Impact Crusher Side Liners / Wear Plates
Impact Crusher Side Liners / Wear Plates — HSI impact crusher wear parts for Metso NP, Sandvik CI/QI, Hazemag, Kleemann and Rubble Master. OEM-compatible supply, custom casting and machining, material certificates included.
View details: Impact Crusher Side Liners / Wear Plates →Impact Crusher Rotor Protection Plates
Impact Crusher Rotor Protection Plates — HSI impact crusher wear parts for Metso NP, Sandvik CI/QI, Hazemag, Kleemann and Rubble Master. OEM-compatible supply, custom casting and machining, material certificates included.
View details: Impact Crusher Rotor Protection Plates →