Cross Bar Cooler Parts
Heat-resistant steel cross bar and grate components for cement plant clinker coolers. Designed for high-temperature clinker transport (up to 1400 C discharge) and abrasion resistance. Compatible with FLSmidth Cross-Bar, IKN Pendulum, and similar grate cooler systems
Cross Bar Cooler Parts
Material Specifications & Selection Guide
| Component | Grade | Standard | Max Temp | Key Feature | Application |
|---|---|---|---|---|---|
| Cross Bar / Beam | ZG35Cr24Ni7SiN | GB/T 8492 | 1050 C | N-strengthened, best thermal fatigue & creep | FLSmidth Cross-Bar, IKN, KHD cooler zones |
| Fixed Grate Plate | ZG40Cr25Ni20Si2 | GB/T 8492 | 1050 C | Excellent oxidation & wear resistance | Hot zone inlet, clinker discharge area |
| Movable Grate Plate | ZG30Cr26Ni5 | GB/T 8492 | 950 C | Good thermal shock, cost-effective | Mid-temp cooler sections, transport zone |
| Clinker Breaker Hammer | ZG35Cr28Ni48 | GB/T 8492 | 1100 C | Highest creep strength, impact resistance | Crusher zone, large clinker lumps |
| Side Damper / Sealing Plate | ZG40Cr25Ni12Si2 | GB/T 8492 | 1000 C | Balanced oxidation & thermal cycling | Cooler side plates, air seal areas |
| Cooler Grate Support | ZG30Cr20Ni10 | GB/T 8492 | 900 C | Economical, good structural strength | Cooler rear zone, lower-temp supports |
| Grade | C (%) | Cr (%) | Ni (%) | Si (%) | Mn (%) | N (%) | P/S Max |
|---|---|---|---|---|---|---|---|
| ZG35Cr24Ni7SiN | 0.30-0.40 | 23.0-26.0 | 6.0-8.0 | 1.30-2.00 | 0.50-1.50 | 0.15-0.25 | 0.040 |
| ZG40Cr25Ni20Si2 | 0.35-0.45 | 24.0-27.0 | 19.0-22.0 | 1.50-2.50 | 0.50-1.50 | – | 0.040 |
| ZG30Cr26Ni5 | 0.25-0.35 | 24.0-28.0 | 4.0-6.0 | 1.00-2.00 | 0.50-1.50 | – | 0.040 |
| ZG35Cr28Ni48 | 0.30-0.40 | 26.0-30.0 | 46.0-50.0 | 1.00-2.00 | 0.50-1.50 | – | 0.040 |
| ZG40Cr25Ni12Si2 | 0.35-0.45 | 24.0-27.0 | 11.0-14.0 | 1.50-2.50 | 0.50-1.50 | – | 0.040 |
| Grade | Tensile (MPa) | Yield (MPa) | Elong. (%) | Hardness (HBW) | Thermal Shock Resistance |
|---|---|---|---|---|---|
| ZG35Cr24Ni7SiN | 480 | 245 | 8 | 170-220 | Excellent |
| ZG40Cr25Ni20Si2 | 450 | 235 | 8 | 180-240 | Very Good |
| ZG30Cr26Ni5 | 450 | 235 | 10 | 170-220 | Excellent |
| ZG35Cr28Ni48 | 440 | 220 | 6 | 180-240 | Good |
| ZG40Cr25Ni12Si2 | 440 | 220 | 6 | 180-230 | Very Good |
Selection Quick Reference
- Hot zone inlet / clinker discharge (1000-1100 C component temp): ZG40Cr25Ni20Si2 fixed grate plates + ZG35Cr28Ni48 clinker breaker hammers — maximum oxidation resistance and impact strength for the hottest, most abrasive zone
- Cross bars & transport beams (900-1050 C, thermal cycling): ZG35Cr24Ni7SiN — nitrogen-strengthened for the best thermal fatigue resistance under rapid cooling air flow
- Mid-cooler movable grate plates (800-950 C): ZG30Cr26Ni5 — cost-effective grade with excellent thermal shock resistance, ideal for reciprocating motion plates
- Side dampers & seals (750-1000 C): ZG40Cr25Ni12Si2 — balanced performance for static components requiring dimensional stability
- All grades compatible with FLSmidth Cross-Bar, IKN Pendulum, KHD, Sinoma, CITIC HIC cooler designs
Certifications & Authorizations
Quality you can verify. Partners you can trust.
Custom OEM / ODM
From drawing to delivery — one-stop customization, no minimum order
Send Drawing
Upload your technical drawing (PDF, DWG, STEP, IGES) or share sample photos with dimensions
Engineering Review
Material recommendation, casting process design, DFM analysis — free quotation within 24 hours
Sampling & Test
Prototype production with full inspection: hardness test, spectrometer, dimensional check
Production & Ship
ISO 9001 certified. 15-25 days standard lead time. Global shipping with full documentation
Frequently Asked Questions
A cross bar cooler uses alternating fixed and moving rows of grate bars to transport and cool clinker from 1400 C to below 100 C. Cooling air is blown upward through the grate bars while the reciprocating motion pushes clinker forward. This design eliminates the “red river” problem common in older grate coolers.
Critical wear components ranked by replacement frequency:
- Grate plates (priority #1): First to wear due to direct clinker contact. Hot zone plates typically last 8-15 months. Signs of replacement: through-holes in plate surface, >30% thickness reduction, or broken mounting lugs.
- Cross bars (priority #2): Support the entire grate plate assembly. Thermal fatigue from rapid cooling air causes gradual cracking. Replace when cracks exceed 50% of cross-section.
- Clinker breaker hammers (priority #3): Impact from large clinker lumps. Uneven wear pattern — hammer tips wear 3-5x faster than hammer body. Rotate hammers at 50% wear to double life.
The cross bar cooler has distinct temperature and wear zones. Using the correct material grade for each zone can extend service life by 40-80% while optimizing cost:
- Zone 1 — Hot inlet (first 3-5 rows, 900-1100 C): ZG40Cr25Ni20Si2 fixed plates. Clinker is still at 1100-1400 C here. The 20% Ni content provides maximum oxidation resistance. Life: 8-12 months under normal conditions.
- Zone 2 — Mid-cooler (rows 6-12, 700-950 C): ZG35Cr24Ni7SiN cross bars and movable plates. The thermal cycling from cooling air is most severe here. N-strengthened grade resists fatigue cracking. Life: 12-18 months.
- Zone 3 — Rear (rows 13+, 300-700 C): ZG30Cr26Ni5 — adequate performance at significantly lower cost. Life: 18-36 months.
- Breaker zone: ZG35Cr28Ni48 hammers — the high Ni (48%) grade handles both thermal shock from hot clinker and impact from large lumps. Tip life: 6-12 months. Rotate hammers mid-life.
Cost optimization tip: Mix grades across the cooler! Using ZG40Cr25Ni20Si2 only in the first 3-5 rows and ZG30Cr26Ni5 in the rear reduces total spare parts cost by 25-35% compared to using a single premium grade throughout.
Cross bar coolers have modular designs where components are standardized by row and position. Ordering the correct parts requires identifying your specific cooler configuration:
Four ways to identify your parts:
- Method 1 — OEM part number: Provide the original part number from the cooler manual or from the marking on existing components. We cross-reference to our manufacturing database.
- Method 2 — Cooler specifications: Cooler model number (e.g., FLSmidth Cross-Bar CB 16×56), production capacity (t/d), number of rows, and row configuration (fixed + movable pattern).
- Method 3 — Dimensional drawing: Provide a sketch or CAD drawing with key dimensions: grate plate length x width, slot pattern, bolt hole positions, and cross bar section dimensions.
- Method 4 — Worn sample: Ship a worn grate plate or cross bar to our factory. Our metrology lab performs 3D laser scanning and reverse-engineers exact replicas.
Full row replacement kit: We offer pre-packaged kits containing all grate plates, cross bars, bolts, and seals for one complete cooler row. This ensures all components arrive together and eliminates the risk of missing pieces during shutdown.
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