Concrete Mixing Plant Mixing Arm (ZG310-570 Cast Steel)
Concrete Mixing Plant
Concrete mixing plant mixing arm in ZG310-570 cast steel - links the drive shaft to the blades and scrapers; lost-foam cast for OEM-fit replacement.
- ■Material: ZG310-570 cast steel
- ■Application: Twin-shaft & planetary concrete mixers
■ ISO 9001:2015 Certified
■ Lost-Foam Cast
■ Impact-Resistant Cast Steel
■ Ships to 50+ Countries
[ Engineering Reference ]
Decisive Specifications
| Material | ZG310-570 cast steel |
|---|---|
| Hardness | Alloy steel casting, toughness-optimized (not surface-hardened) |
| Process | Lost foam casting, machined to OEM bolt pattern |
| Application | Twin-shaft & planetary concrete mixers |
| OEM Fit | Sicoma, Liebherr, MEKA, Simem, SANY, Zoomlion, Teka, BHS, Eirich |
■ All values verified via CMM inspection · ISO 9001:2015
[ Grade Selection ]
Choosing the Right Grade
This part is cast in tough steel, not hard iron — a mixing arm fails from shock and fatigue, so toughness matters more than surface hardness. Pick the grade by duty:
Not sure which grade fits your plant? Send your aggregate type, output and plant model and we recommend the grade with your quote.
[ Available Grades / Variants ]
Available Grades & Variants
This part ships in several cast grades. Send your output, aggregate hardness and plant model and we match the grade — or cast to your exact OEM specification.
[ RFQ Prompt ]
Need a Specific Size or OEM Replacement?
Don't see your exact specs? Send us a blueprint, a worn sample, or just your machine model. Our team will review the details and provide a tailored quotation.
[ OEM Compatibility ]
Compatible Mixing Plant Brands
® Registered trademarks are property of their respective owners.
[ Technical Audit ]
Engineering Advantages
Toughness-First Cast Steel
ZG310-570 puts impact resistance ahead of raw hardness. Under the reversing shock load of a full aggregate batch the arm absorbs energy and deforms slightly rather than cracking at the hub - the failure mode that takes liners and shafts down with it.
Machined OEM Bolt Pattern
Hubs and bolt bosses are machined to the original-equipment pattern, so each arm seats on the shaft and holds blade spacing without shims or field grinding - keeping a swap to a routine maintenance task.
Reproduced From Your Sample
No drawing on file is no problem. Send a worn arm or the plant model and we reverse-engineer a drop-in casting on the lost-foam line - the standard route for older or less common mixers.
The mixing arm is the load-bearing link between the rotating shaft and the blades and scrapers that actually move the concrete. Every batch it carries the full reversing torque of the aggregate load. When an arm starts to crack at the hub or its bolt bosses elongate, blade spacing drifts out of position, the mix turns uneven, and a fully detached arm can gouge the liner plates or jam the drum - turning a low-cost wear item into an unplanned plant shutdown.
Sureay casts these arms from ZG310-570 cast steel, a grade chosen for impact toughness rather than surface hardness, so the arm absorbs shock and flexes slightly instead of fracturing. Each arm is produced on our lost-foam casting line for repeatable wall thickness and clean hub geometry, then machined to the original bolt pattern so it indexes onto the shaft without shimming or field grinding.
Arms are supplied to fit common twin-shaft and planetary plants from Sicoma, Liebherr, MEKA, Simem, SANY, Zoomlion, Teka, BHS and Eirich. Arms typically serve 12-18 months. Service life depends on output, aggregate hardness and duty cycle — verify against your OEM service interval. We recommend renewing arms as a set with the blades and scrapers so the whole mixing tool stays inside the same wear window.
[ How to Order ]
Made to fit your plant — from a sample or a model
Every part is cast to order. There is no catalogue number to look up — we reverse-engineer the fit from your worn part or plant model, so you get an exact replacement rather than a near-miss.
Send your part or model
Email a photo of the worn part, its key dimensions, or your plant make and model. If you can ship the worn part it becomes the master pattern for an exact copy.
We measure & match
Our team reverse-engineers the geometry, bolt pattern and profile, and recommends the grade for your aggregate, output and temperature.
Confirm the quote
You approve dimensions, grade, price, MOQ and lead time before anything is cast — no surprises.
Cast, inspect & ship
We cast on our lost-foam / DISA lines, run a dimensional and hardness check, and ship factory-direct to 50+ countries. A material and hardness report can travel with the order.
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[ Knowledge Base ]
Product FAQs & Buying Guidance
Technical FAQs
01How often should concrete mixer arms be replaced?+−
Most plants renew mixing arms every 12-18 months, though high-output operations running hard, abrasive aggregate can reach the wear limit sooner. The practical signal is bolt-hole elongation or blade spacing that no longer holds adjustment. Replacing arms together with the blades and scrapers keeps the whole mixing tool on one wear cycle.
02Will a replacement arm fit my existing shaft without modification?+−
Yes. Arms are machined to the original OEM bolt pattern for the listed plants, so they index onto the shaft and locate the blades without shimming or drilling. Send us the plant model and a photo of the hub and we confirm the pattern before shipping.
03Why are mixing arms cast in tougher steel instead of a harder grade?+−
Arms fail from shock and fatigue, not abrasion, so toughness matters more than hardness here - a very hard, brittle arm would crack at the hub under reversing batch loads. The hard, high-chromium material is reserved for the blades, scrapers and liners that take the direct grinding.
04Which concrete mixing plants do your mixing arms fit?+−
Our concrete mixing arms are cast to fit twin-shaft and planetary plants from Sicoma, Liebherr, MEKA, Simem, SANY, Zoomlion, Teka, BHS and Eirich. Tell us the plant make and model and we match the bolt pattern and shaft bore; arms for other brands can be reverse-engineered from a worn sample.
05Can you make a concrete mixing arm from a worn sample or drawing?+−
Yes - OEM/ODM is welcome. Send a worn arm, a dimensioned sketch or the plant model and we cast a drop-in replacement on our lost-foam line, matched to the original hub geometry and bolt pattern. This is the usual route for older or less common mixers.
06What is ZG310-570 cast steel and why is it used for mixing arms?+−
ZG310-570 is a medium-strength cast carbon steel chosen for toughness rather than surface hardness. A mixing arm carries reversing shock loads every batch, so it has to absorb impact and flex slightly instead of cracking - the abrasion-resistant Ni-Hard and high-chrome grades are reserved for the blades and liners.
07What is the minimum order quantity and lead time for mixing arms?+−
We ship factory-direct and keep the MOQ low on replacement wear parts; exact quantity and lead time depend on the model and whether tooling already exists. Send your plant model for a quote - most repeat items ship in a few weeks, and a material and hardness report can be included on request.
Why Choose Sureay
01Is Sureay a direct manufacturer or a trading company?+−
We are a direct factory. Most mixer wear parts are cast and machined in-house on our lost-foam and DISA green-sand lines, while sealing components are precision-molded - either way you deal with the people who actually make the parts and skip the trading-company markup.
02Can you supply parts to fit a specific OEM mixer model?+−
Yes. Send the plant make and model, or a photo and key dimensions of the worn part, and we match the casting and bolt pattern. We supply OEM-fit replacement wear parts for the major concrete and asphalt plant brands and welcome OEM/ODM work.
03Are you ISO certified and do you ship internationally?+−
Sureay is ISO 9001:2015 certified and ships factory-direct to over 50 countries. Each order can include a material and hardness report on request.
Reach Our Team
Get in Touch with Our Engineers
Contact Our Team
Discuss your requirements directly with our engineers.
Request a Quote
Our engineering team responds within 24 hours.
Sureay manufactures replacement wear parts to fit the listed OEM machines and is not affiliated with these manufacturers. All brand names and trademarks are the property of their respective owners.