High speed mixer blades are the wear resistant mixing paddles installed on the agitator shaft of PVC high speed mixers, spinning the powder bed into a vortex so friction heat disperses stabilizers, lubricants and other additives into the resin. Chenxing blades are precision machined from wear resistant alloy steel with a hardened surface, balanced before shipment, and matched to the SRL-Z mixer series used in PVC compounding, flooring material and recycling lines. Blade angle, layer count and surface treatment are customized at enquiry.
These are replaceable wear parts, not the mixer itself. The paddle shape decides how fast the batch heats up, how evenly the additives spread and how long the machine holds its original mixing performance. When the wear layer thins out, the blade loses its cutting edge and the batch time creeps up. Swapping in a spare blade set brings the mix back to the first-day behavior.
The blades work inside the mixing units that Chenxing supplies. The high speed mixing unit range shows the machines they fit, the compounding machinery page shows the complete material flow, and the compounding solution package covers the full plant layout.
Key points:
Double layer paddle design with separate upper and lower blade angles keeps the powder circulating from top to bottom.
Wear resistant alloy steel with surface hardening extends the replacement interval.
Dynamic balancing is done before shipment to keep vibration and noise low.
Angle, layer count and surface treatment follow the recipe and the mixer size.
Spare blade sets can be ordered together with the mixer or as replacements.
A standard high speed mixer blade set has two layers. The lower paddle throws material outward and upward, and the upper paddle pushes it back toward the center, so the whole charge keeps turning over inside the cylinder. Common industry blade angles run about 30 to 45 degrees, confirmed at enquiry. Some setups use three layers or special flow channels when the recipe needs a longer residence time in the hot zone.
Blades are machined from alloy steel and then surface hardened. For highly abrasive recipes, a wear layer is built up on the working edge, either by hardfacing or by a hard alloy coating, confirmed at enquiry. The choice follows the material abrasiveness: a high filler loading, for example calcium carbonate at a large share, wears the blade faster than a plain resin mix. A surface hardness check is part of the factory inspection.
The blades are matched to the SRL-Z high speed and low speed mixing unit series. The table below lists typical industry reference values for the mixer series and is confirmed at enquiry.
| Model | Total Volume Hot/Cold (L) | Effective Volume Hot/Cold (L) | Capacity (kg/h) | Main Shaft Speed (rpm) | Motor Power (kW) |
|---|---|---|---|---|---|
| SRL-Z200/500W | 200/500 | 150/320 | 370-400 | 490/980/70 | 30/42/7.5 |
| SRL-Z300/600W | 300/600 | 225/384 | 550-600 | 480/964/70 | 40/55/11 |
| SRL-Z500/1000W | 500/1000 | 375/660 | 800-1000 | 441/886/60 | 47/67/1.5 |
| SRL-Z800/2000W | 800/2000 | 560/1280 | 1300-1500 | 330/660/51 | 83/110/18.5 |
| SRL-Z1000/3500W | 1000/3500 | 750/2240 | 1800-2000 | 330/660/51 | 110/150/30 |
Matching starts with the mixer model and the cylinder bore, because the blade outer diameter has to clear the wall by the designed gap. Then the shaft diameter decides the hub and key fit, and the operating speed decides the balancing grade. Material abrasiveness picks the wear treatment. Chenxing confirms the drawing against the host machine before manufacturing, so a blade set built for one mixer drops in without modification. The pelletizing equipment page and the extruder machines page give context on the lines these mixers usually serve.
| Application | Blade Role |
|---|---|
| PVC compounding | Disperses stabilizers, lubricants and fillers into PVC resin by friction heat |
| SPC, LVT and WPC flooring material mixing | Keeps the heavy filler load evenly suspended in the compound |
| Plastic modification and recycling lines | Blends base polymer, additives and regrind in controlled hot batches |
| Chemical and construction powder blending | Mixes powders that need heat or high turnover in the cylinder |
PVC compounding is the largest user. The blade set sits at the heart of the batch, and the PVC pipe production setup depends on a consistent dry blend. Flooring shops mix high filler compounds for sheet extrusion lines and marble sheet production, where the wear load is heavy. HDPE line planning and PPR line planning also start from a properly mixed compound.
Recycling shops blend regrind with virgin material and additives in hot batches. Recycling solutions often include a mixing step, and a two stage recycling unit plant keeps spare blades on hand because the regrind load wears paddles faster. Film recycling line operators use the same spare part logic. The blades also appear in profile extrusion plants and profile extrusion projects, wherever a dry blend has to be prepared in batches.
What can be customized:
Blade size and shape.
Upper and lower paddle angle and layer count.
Material grade and wear treatment.
Balancing grade.
Hub and mounting interface to match the host machine.
What stays fixed:
The basic high speed mixer paddle form, because the vortex and friction heating depend on that geometry.
The mounting interface, which follows the host mixer shaft and cylinder.
When the mixer itself is not from Chenxing, send the cylinder bore, shaft diameter and speed, and the drawing is checked against those numbers. A powder loading machine or continuous loading unit can feed the mixer, and regrind loading can bring recycled material back into the batch. For planning around the mixer, the pipe extrusion projects page and the plant solutions page show complete workshop arrangements.
Chenxing Machinery has held ISO9001 certification and CE compliance for its plastic machinery range since the company was founded in 2002, with more than 20 years of extrusion and auxiliary equipment experience. Every blade set goes through factory checks: dimensions against the drawing, surface hardness check, and a dynamic balancing run before packing. The balancing grade follows the operating speed, and the result is recorded on the inspection report.
Each blade set ships with an inspection report and a certificate of conformity. A 1-year warranty covers manufacturing defects. Replacement blades are available from stock for standard SRL-Z sizes, and non standard sets are made to order. Global service can be arranged on request. Company background is on the about us page, and the product pages list the rest of the machinery range.
MOQ: 1 set.
Lead time: confirmed on order.
Packing: export wooden case with rust proof wrapping.
Trade terms: FOB, EXW, CFR, CIF, CIP.
Payment: T/T or L/C.
Before shipment the blades are oiled, wrapped and fixed inside the case so the surfaces cannot knock against each other. A packing list and shipping marks are attached. Machine documents are available from the download area, and the FAQ section answers common buying points.
They are the wear resistant mixing paddles mounted on the agitator shaft of a high speed mixer. They spin the powder into a vortex so friction heat disperses additives into the resin.
Wear resistant alloy steel with a hardened surface, and hardfacing or hard alloy coating on the working edge for abrasive recipes, confirmed at enquiry.
Blade angle and layer count decide how fast the batch heats up and how evenly additives spread. A worn blade raises batch time and lowers uniformity.
The blades are matched to the SRL-Z high speed and low speed mixing unit series, and can also be made for other mixers when the cylinder bore, shaft diameter and speed are provided.
The blade angle is set at manufacture. Common industry angles run about 30 to 45 degrees, confirmed at enquiry, and the angle is customized for the recipe.
Service life depends on material abrasiveness and filler loading. Highly abrasive compounds wear blades faster. A replacement interval is estimated at enquiry.
PVC compounding, SPC and LVT flooring material mixing, plastic modification and recycling lines, and chemical or construction powder blending.
The lower paddle throws material outward and upward, and the upper paddle pushes it back toward the center, so the whole charge keeps turning over inside the cylinder.
Each blade set goes through a dynamic balancing run before shipment, and the balancing grade follows the operating speed, confirmed at enquiry.
MOQ is 1 set. Lead time is confirmed on order after the drawing is approved against the host machine.
For related machinery, the ABS pipe machinery page, the pipe line machinery page and the agglomerator machinery page show equipment that takes a properly mixed compound.
To get a drawing and a quotation, please provide:
Host mixer model or cylinder volume.
Material types and abrasiveness.
Blade layer count and angle requirements.
Material grade and wear treatment.
Quantity.
Destination port and trade terms.
Nicole | Email: ceo@cxsljx.com | Tel WhatsApp WeChat: +86 159 5118 7228