CI Series Impact Crusher
Sandvik CI121 / CI122 / CI131 / CI132 / CI151 / CI152
About the CI Series Impact Crusher
Horizontal shaft impactors reduce material by impact rather than compression, so the working parts are the blow bars on the rotor and the impact plates and curtains in the chamber. Blow bars take the hardest hit of any wear part in the plant, and the chamber liners behind them take the rebounding material.
Metallurgy is the whole story here: a blow bar has to be hard enough to resist abrasion and tough enough to absorb impact without breaking, so the grade is chosen from the feed size and the amount of uncrushable material in the stream.
Wear parts we supply for the CI Series Impact Crusher
- Blow bars / blow hammers — Cr26 · Cr20 · Mn13Cr2 (martensitic on request)
- Impact plates, impact curtains — Mn13Cr2 · Cr26
- Chamber liner plates, side liners — Mn13Cr2
- Blow bar bolts, wedges, locking bars — steel
- Grinding path, breaker plates — Mn13Cr2 · Cr26
- Rotor wear parts — Mn13Cr2 / steel
Casting materials
| Material | Character | Typical use |
|---|---|---|
| Mn13Cr2 | Work-hardening manganese, good toughness | General quarry and recycling duty, cheek plates, chamber liners |
| Mn18Cr2 | Higher manganese, better resistance to heavy impact | Primary jaws, cone liners on coarse feed, gyratory mantles |
| Mn22Cr2 | Highest toughness of the manganese range | Large primary liners where impact is severe |
| Cr26 / Cr20 (high chrome) | High abrasion resistance, lower toughness | Blow bars, VSI tips and anvils, fine-crushing chambers |
| Bronze | Bearing grade, machined | Eccentric bushings, socket liners, thrust and step washers |
Material is chosen from the feed size, the rock type and the amount of uncrushable material in the stream — tell us how the current liners fail (worn out, cracked, or deformed) and we will match the grade.
How to order
- Send the machine model and part number, or your own drawing, measured sample or photos with dimensions.
- We confirm the profile, material and weight, then quote — FOB Ningbo or Shanghai for sea freight, with an air option for urgent stops.
- Patterns: a large pattern library is already on hand; where there is no pattern we make one (3D-printed pattern with a machined mould).
- Pouring, heat treatment and machining are carried out in our own foundry, then the parts are inspected against the drawing before packing.
FAQ
High chrome or manganese for blow bars?
High chrome (Cr26 / Cr20) gives the longest life where the feed is abrasive and reasonably clean; manganese is the safer choice where the feed carries uncrushable material, because it deforms instead of cracking.
Can you supply a blow bar set for the whole rotor?
Yes — blow bars are normally quoted per rotor set so the bars are balanced and wear evenly, and single bars are supplied as replacements.
Do you machine the blow bars after casting?
Casting, heat treatment and machining are all done in our own foundry, so the mounting faces and bolt holes are finished to the drawing before shipment.
Matching wear parts for this series
3 matching products found.