SINGLE SIGMA ARM MIXER

Industrial horizontal heavy duty dough mixer for large batches

Heavy duty dough mixer – Single sigma arm

The Shaffer Single Sigma Arm mixer is a powerful enclosed horizontal dough mixer suitable for preparing a large batch of dough that requires exceptional blending.

Ideal for:

Rotary molded cookies, crackers, and biscuit dough mixing
Corn tortilla, tostada, and masa dough mixing
Muffin, cake, and streusel batter mixing
Granola and health bar ingredient mixing
Pet treat formulations mixing
Pretzels, pasta, and scone dough mixing

Coperion also offers a range of horizontal dough mixers for food and bakery processing,

Heavy Duty Dough Mixer – Shaffer Single Sigma Arm

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Overview
Range
Design Options
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The Shaffer single sigma arm mixer is engineered to handle the toughest doughs and fillings in high-capacity food production environments. With its heavy-duty stainless steel sigma arm and customizable frame designs, this mixer delivers efficient, consistent results for rotary moulded cookies, crackers, biscuits, sweet doughs, granola bars, and more. Designed with reliability and cleanability in mind, it’s built to perform in bakeries where precision and durability matter most.

Engineered for food safety and hygiene

Food safety is at the core of the Sigma Arm mixer design. The product zone features stainless steel throughout for superior cleanability. Additional optional sanitary features include metal-detectable and positive pressure bowl seals, rotary face agitator shaft Seals (U.S. Patent No. 10,174,842) and NEMA 4X water-tight enclosures where applicable.

Accessibility options and temperature control

When space is limited, the single sigma arm mixer can be configured with a reverse curve design to minimize its footprint without sacrificing performance. For dough applications requiring temperature control, optional cooling jackets help regulate dough temperatures during the mixing cycle, protecting dough quality even in heat-sensitive processes.

Model	Capacity	Usable bowl volume	Rated bowl volume
SA4	408 kg / 900 lb	714 L / 25.2 cu ft	583 L / 20.6 cu ft
SA5	544 kg / 1,200 lb	801 L / 28.3 cu ft	656 L / 23.2 cu ft
SA6	726 kg / 1,600 lb	1,028 L / 36.3 cu ft	945 L / 33.4 cu ft
SA7	953 kg / 2,100 lb	1,348 L / 47.6 cu ft	1,238 L / 43.7 cu ft
SA8	1,089 kg / 2,400 lb	1,504 L / 53.1 cu ft	1,365 L / 48.2 cu ft
SA9	1,270 kg / 2,800 lb	1,722 L / 60.8 cu ft	1,563 L / 55.2 cu ft
SA10	1,542 kg / 3,400 lb	2,263 L / 79.9 cu ft	2,042 L / 72.1 cu ft
SA11	1,678 kg / 3,700 lb	2,435 L / 86.0 cu ft	2,204 / 77.8 cu ft
SA12	1,814 kg / 4,000 lb	2,597 L / 91.7 cu ft	2,391 L / 84.5 cu ft
SA13	2,041 kg / 4,500 lb	2,750 L / 97.1 cu ft	2,532 L / 89.4 cu ft
SA14	2,268 kg / 5,000 lb	3,188 L / 112.6 cu ft	2,953 L / 104.3 cu ft

Optional features

Refrigeration jacket
Custom canopy inlet configuration
Custom electrical, operator interface and PLC packages
Load cells
To dough trough, chunker, or kibbler integration
Clean-In-Place system

Frame options

Why choose the Shaffer single sigma arm heavy duty dough mixer?

Engineered to handle the demands of modern bakeries, the Shaffer Single sigma arm mixer is a reliable choice for producers seeking robust, precise mixing performance tailored to stiff and dense dough applications. With features like reverse tilt for easy cleaning and seamless integration into production lines, it’s engineered to maximize efficiency and reduce downtime.