Bjerke Brothers, Inc.

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Bjerke Brothers, Inc. continues to evolve by offering new and improved grain cleaning equipment for its global customer base. During the past few years, engineers at Crippen Manufacturing Company have been busy designing a "New Era" of rotary screen machines offering great capacity, versatility and improved performance.

Working by means of rotary motion, the new NS Series of rotary screen cleaners have the ability to remove both small and large foreign material from a vast variety of grains, oilseeds and pulse crops. The superior rotation speeds on the NS rotaries allow for a maximum presentation of screen surface to grain and thus, much higher capacities than possible from conventional screen separators. Depending on the model and application, capacities up to 12,000 bu/hr can be realized.

In nearly all cases, a rotary motion obtains the highest possible throughput of product per unit of screen area. As the particles travel down the sieve, the rotary motion allows for lateral, diagonal and longitudinal separation through varying screen openings and layers. With rotary action, the particles are exposed to a greater number of screen openings per pass, as compared with reciprocal motion.

By utilizing the latest available technology, Crippen Manufacturing Company has set a new standard in rotary screen separation. The NS Series of high quality, rotary screen cleaners are truly today's leaders in capacity, versatility and performance.

Flow, Deck & Screen Combinations

There are 2 basic flow combinations for the new NS Series rotary screen cleaners: parallel flow for high capacity applications, and counter flow for more precise separations where increased screen retention time is required. Out of these two basic flows are many variations of scalp/sift combinations that allows the NS series of rotary screen cleaners the flexibility to meet all customer needs in capacity, reliability, economy and separation.

Standard Features

Structural components made from heavy gauge steel
Stress relieved
Orbiting screen action for superior screen capacity
Parallel or counter flow deck configurations
Low maintenance suspension rods and heavy duty universal joints
Heavy gauge internal spouting for enhanced wear resistance
Positive securing of screen frame to shoe
Uniframe screen construction to ensure correct dimension between ball & screen, allowing maximum cleaning action
Inspection doors & sampling ports

Options

Additional rough scalping or fine scalping capabilities on one of the following:

Standard rubble deck
Extended rubble deck
Double extended rubble deck

5° or 7° pitch shoes on selected models
Open and closed circuit scalper aspirators
Open and closed circuit aspirators

Model Code

NS Rotaries: Series 88 & 120
Model	Motor H.P.	Machine Weight (lbs.)	Total Screen Area (sq. ft.)	Shoe Depths		Machine Length*		Machine Width*		Machine Height*
Model	Motor H.P.	Machine Weight (lbs.)	Total Screen Area (sq. ft.)	Inch	MM	Inch	MM	Inch	MM	Inch	MM
NS-20X88P20	5	8000	132	19 1/8	486	119	3023	93	2362	79	2007
NS-22X88P22	7.5	13000	264	19 1/8	486	124	3150	97	2464	101	2565
NS-33X88P22	10	16500	396	28 11/16	729	134	3404	97	2464	131	3327
NS-22X120P22	10	17000	360	20 7/8	533	157	3988	103	2616	104	2642
NS-33X120P22	15	21000	540	31 5/16	795	180	4572	103	2616	122	3099
NS-33x120P22LS8-60	15	24000	600
NS-33X120P22	15	21000	540	31 5/16	795	180	4572	103	2616	122	3099
NS-44X120P11	15	21000	360	31 5/16	795	165	4191	103	2616	122	3099
Note: Standard rubble deck provides an additional 22 sq. ft. of scalping area Double extended rubble deck provides an additonal 88 sq. ft. of scalping area Both 54" and 60" shoes available on series 120 rotaries

Counter Flow
Model	Motor H.P.	Machine Weight (lbs.)	Total Screen Area (sq. ft.)	Shoe Depths		Machine Length*		Machine Width*		Machine Height*
Model	Motor H.P.	Machine Weight (lbs.)	Total Screen Area (sq. ft.)	Inch	MM	Inch	MM	Inch	MM	Inch	MM
NS-11X88C22	5	9200	132	9 9/16	243	129	3277	93	2362	71	1803
NS-22X88C22	7.5	13000	264	19 1/8	486	124	3150	97	2464	90	2286
NS-23X88C212	7.5	14000	264	19 1/8	486	137	3480	97	2464	90	2286
* Measurements shown are without the aspirator or rubble deck

NS Rotaries: P33 Series

Complimenting the NS 88 & 120 series rotaries, the P33 Series, can provide either in-line resifting functionality with the P33 LS Series or multiple scalping functionality with the P33 TS Series. This additional functionality is achieved without compromising machine capacity. This new feature reduces traditional shrink associated with cleaning operations and also provides a "value-added" marketing opportunity. This feature also provides the ability to clean multiple commodities without having to change screens. This flexibility results in less down time. The P33 Series Rotary has become an important part of Northland's innovative In-Line "value-added" grain processing philosophy.

Model	Motor H.P.	Machine Weight (lbs.)	Total Screen Area (sq. ft.)	Shoe Depths		Machine Length*		Machine Width*		Machine Height*
Model	Motor H.P.	Machine Weight (lbs.)	Total Screen Area (sq. ft.)	Inch	MM	Inch	MM	Inch	MM	Inch	MM
NS-22X120P33	10	17000	540	20 7/8	533	157	3988	103	2616	104	2642
NS-33X120P33	15	21000	810	31 5/16	795	180	4572	103	2616	122	3099
* Measurements shown are without the aspirator or rubble deck

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