Single Sigma Arm Mixers


Shaffer® Single Sigma Arm Mixers are ideal for rotary moulded cookies, crackers, biscuits, corn tortillas, muffins, sweet doughs, granola bars, stiff fillings, and pet foods. The mixer is available in open or enclosed frame designs and is engineered to meet your bakery’s specific needs.

Single Sigma Arm Mixers Resources

900 lb / 408 kg
20.6 ft / 583 L
1,200 lb / 544 kg
23.18 ft / 656 L
1,600 lb / 726 kg.
33.38 ft / 945 L
2,100 lb / 953 kg
43.72 ft / 1,238 L
2,400 lb / 1,089 kg
47.9 ft / 1,358 L
2,800 lb / 1,270 kg
55.21 ft / 1,563 L
3,400 lb / 1,542 kg
72.11 ft / 2,042 L
3,700 lb / 1,678 kg
77.83 ft / 2,204 L
4,000 lb / 1,814 kg
88.9 ft / 2,518 L
4,500 lb / 2,041 kg
94.13 ft / 2,665 L
5,000 lb / 2,268 kg
109.8 ft / 3,109 L


Enclosed Frame Design

Features a single end belt drive system and water tight enclosures for the drive and hydraulic systems

Open Frame Design

Features our energy efficient direct drive system and either a frame-mounted, remote-mounted, or water tight enclosed hydraulic tilt system

Heavy Duty Stainless Steel Sigma Arm Agitator


Stainless Steel Product Zone

Bowl, agitator, and canopy

Positive Pressure Side Bowl Seals

Constructed of food-grade material that forms against canopy to provide exceptional bowl sealing

Metal Detectable UHMW

Positive pressure front and rear bowl seals

Rotary Face Agitator Shaft Seals

(patent pending)

Hydraulic Bowl Tilt Systems

With jog and tilt using single or dual hydraulic cylinders for forward tilt up to 140º forward and 95º reverse

NEMA 4 Painted Starter Enclosure

UL, cUL Compliant Controls

Bowl Mounting Bearing

Bowl tilts on a laminate composite bearing

Heavy Duty Stainless Steel Canopy

Butterfly gate, liquid inlets, and flour dust vent

Watershed® Operator Panel Enclosure

Touch screen operator interface, PLC controls, and push buttons with universal labels for frequently used functions*

Grout Kit

Anchor bolts and grout for sanitary mixer installation

BISSC Certified

ANSI, USDA, and CE Compliant

*Watershed® is a registered trademark of Hoffman Enclosures, Inc.

Optional Features

Shaffer Single Sigma Mixer

Double End Drive

Enclosed frame only


Over tilt and two-way tilt operation


Refrigeration jacket


Sanitary bowl drain

Flour Gate

Sliding flour gate in lieu of butterfly valve

Flour Gate Adapter

BFM® flour gate adapter and dust vent**

Ingredient Door

Ingredient door in canopy

Agitator Shaft Seals

Lip seal style agitator shaft seals

Custom Interface & PLC

Custom operator interface and PLC packages


NEMA 4X stainless steel starter enclosure


Grace port 120 VAC outlet and ethernet port in electrical enclosure door


Non-contact voltage detector and voltage indicator in electrical enclosure door

ARC Flash Box

Main circuit breaker ARC flash box
**BFM® fitting is a registered trademark of BFM Global, Ltd.