Super-B SQ8 Continuous-Flow Grain Dryer

The Super-B SQ8 is the smallest model in the SUPER-B Energy Miser SQ Series — the entry point into commercial-grade continuous-flow drying technology for very small Canadian farms, hobby operations, and specialty crop producers. With 163 bushels of holding capacity, an 8-foot 2-inch grain column, and a 10 HP fan, the SQ8 delivers the full Super-B engineering platform — variable-width grain column, EVENFLO drag-chain unloading, centrifugal blower — at the smallest practical scale Brock manufactures.

The SQ8 is the model most often selected by quarter-section grain operations, smaller mixed farms supplementing natural-air drying with limited dedicated capacity, specialty seed producers needing precise drying for niche crops, and operators who specifically want continuous-flow technology over batch or natural-air alternatives at small scale. It’s also occasionally selected as a backup unit by larger operations wanting redundancy without the capital investment of a second full-size dryer.

For prairie operators handling under 500 acres of mixed crops, smaller specialty farms, and operations transitioning from pure natural-air drying to limited continuous-flow capacity, the SQ8 represents the lowest entry point into the Super-B SQ Series.

SQ8 Configuration Choice — D, E, or M

The SQ8 is offered in three standard configurations defined by the letter suffix after the model number. Note: the SQ8 is NOT available in the A (Energy Miser) configuration — the heat-recovery hot air return duct option begins at the SQ16 size class. Buyers prioritizing fuel-recovery technology should consider the SQ16A as the smallest qualifying model in the A configuration.

SQ8D — Full Heat (Single Zone)

Continuous-flow full-heat operation with one temperature throughout the column. Grain leaves the dryer hot and is cooled in-bin afterward. The simplest and lowest-cost SQ8 configuration.

Best for: Single-crop operations focused primarily on wheat or feed-grain. Common on smaller mixed grain farms with simple drying requirements where mode flexibility isn’t a priority.

SQ8E — Continuous Flow with Louvers

Adds adjustable cooling louvers enabling three drying modes: full heat, pressure heat / pressure cool, and pressure heat / vacuum cool. The most-installed SQ8 configuration on Canadian prairie farms because mode flexibility matters even at small scale when handling mixed crops.

Best for: Small mixed-crop prairie operations where the SQ8 sees use across wheat, canola, oats, and pulses. The standard recommendation for most Canadian SQ8 buyers.

SQ8M — Two-Temperature-Zone

Uses two distinct temperature zones for full-heat or pressure-heat / pressure-cool drying. Designed for sensitive crops where temperature staging protects grain quality even at small scale.

Best for: Small seed-grade producers, specialty crop operations, niche pulse processors, and operations where temperature control matters more than throughput.

Key Specifications

Specification	Value
Series	SUPER-B Energy Miser SQ Series
Configuration	Single-module continuous flow
Total Fan HP	10 HP
Auger Load HP	2 HP
Chain Unload HP	2 HP
Column Length	8′ 2″
Overall Length	19′ 0″
Overall Height	14′ 2″
Total Holding Capacity	163 BU
Configurations Available	D (Full Heat), E (Louvers), M (Two-Zone)
Fuel	LP or Natural Gas
Burner	Brock full flame-wall with stainless steel baffles
Blower	Double-width, double-inlet centrifugal (standard)
Grain Column	Variable-width (narrower top, wider bottom)
Outer Skins	18-gauge stainless steel perforated
Unloading	EVENFLO drag-chain conveyor
Standard Controls	QUANTUM or SPECTRUM
Optional Controls	INTUI-DRY 15.6″ touchscreen with remote access
Plenum Door	42″ × 22″ vertical access with safety shutdown switch

Drying Capacity by Crop and Mode

All capacities below are wet bushels per hour. Standard reference (corn 25.5%→15.5%) is published by Brock for cross-model comparison. Prairie crop capacities vary with grain temperature, ambient temperature, fines content, and crop maturity.

Corn Capacity (Manufacturer Standard Reference)

Mode	Moisture Removal	Capacity (BPH)
Full Heat – Single Zone (Model D)	25.5% to 15.5% (10 points)	248
Full Heat – Single Zone (Model D)	20.5% to 15.5% (5 points)	405
Modified Full Heat – Single Zone (Models M, E)	25.5% to 15.5%	238
Modified Full Heat – Single Zone (Models M, E)	20.5% to 15.5%	389
Pressure Heat – Two-Zone (Model M)	25.5% to 15.5%	224
Pressure Heat – Two-Zone (Model M)	20.5% to 15.5%	363

Approximate Prairie Crop Capacity (Practical Estimates)

Crop	Moisture Removal	Approximate Capacity (BPH)
Hard Red Spring Wheat	16% → 14.5% (1.5 points)	800–1,050
Wheat	18% → 14.5% (3.5 points)	480–630
Canola (crush grade, 82°C max)	12% → 8% (4 points)	380–520
Canola (seed grade, 45°C max)	12% → 8% (4 points)	190–280
Oats	16% → 14% (2 points)	600–800
Yellow Peas	18% → 16% (2 points)	420–600

These prairie-crop estimates are derived from the published corn ratings and typical efficiency factors for each crop. Always confirm capacity for your specific crop, moisture differential, and ambient conditions with your dealer before sizing.

Fan & Heater Configuration

The SQ8 runs a single 10 HP centrifugal blower — the same fan rating as the larger SQ12. The double-width, double-inlet centrifugal blower design provides:

• Significantly lower noise than axial fans found on most competitors and earlier Super-B models
• Adequate static pressure for the SQ8’s shorter 8′ 2″ grain column
• Better energy efficiency than equivalent axial designs at this capacity

The 10 HP rating is well-matched to the SQ8’s column length. While the same 10 HP fan is shared with the SQ12, the SQ8 puts that airflow through a shorter column, which means the SQ8 actually runs the fan more efficiently — less static pressure required, slightly better fan performance per BTU of heat input.

The trade-off, common to all centrifugal-blower SQ Series units, is that the fan can ice up in extreme cold (typically below approximately –17°C) and may require a thaw-out cycle. For most prairie harvests this is rarely an issue at the SQ8’s typical operating profile (smaller volumes, often shorter daily runs). Late-October drying in cold conditions occasionally requires brief thaw cycles.

The Brock full flame-wall burner with stainless steel baffles distributes heat evenly across the SQ8’s grain column. The shorter column means easier achievement of uniform plenum temperatures than longer SQ Series models — front-to-back temperature variation is minimal on the SQ8.

The SQ8 is configured for either liquid propane (LP) or natural gas (NG) at order. For SQ8-class operations drying typically under 15,000 bushels per season, the absolute fuel cost difference between propane and natural gas is smaller than larger SQ Series units. For most SQ8 installations, propane is the practical choice — the natural gas connection cost rarely pays back at the SQ8’s lower annual fuel consumption unless the service is already at the yard.

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Grain Column & Holding Capacity

The SQ8 features Super-B’s variable-width grain column in its shortest 8′ 2″ configuration. The geometry follows the same principle as larger SQ Series models — narrower at the top for efficient moisture removal, wider at the bottom for better dwell time — applied across the smallest practical column length for serious continuous-flow drying.

Total holding capacity: 163 bushels — including the perforated wet garner bin at the top, the active grain column, and the discharge zone. Even at this small scale, the wet garner pre-warms incoming grain using exhaust heat from the lower drying chambers, beginning the drying process before grain enters the main column.

Stainless steel perforated outer skins (18-gauge) are standard. With proper maintenance — including thorough cleaning between crops and especially after canola — stainless skins typically outlast every other component on the dryer. Operators report 25–30+ year service life on the skin assemblies of well-maintained SQ Series units, regardless of size.

For drying canola or other small grains, the small grain screen option is recommended. The SQ8’s lower throughput means less canola fines accumulation per hour than larger units, but daily screen inspection during canola drying campaigns remains essential.

Loading, Unloading & Metering (EVENFLO System)

The SQ8 uses Super-B’s patented EVENFLO drag-chain unloading system — the same fundamental design as larger SQ Series models, sized for the SQ8’s throughput.

Loading: A 2 HP top auger feeds wet grain from your wet bin into the SQ8’s perforated wet garner. The 2 HP rating is sized appropriately for the SQ8’s drying capacity — at typical SQ8 throughput, the loading auger easily keeps up.

Unloading via EVENFLO: A slow-moving drag-style chain conveyor at the base of the dryer powered by a 2 HP variable-speed AC motor. Even at the SQ8’s small scale, the EVENFLO system delivers meaningful advantages over conventional metering-roll alternatives:

• Even unloading across the column — eliminates flow imbalance entirely
• Gentler grain handling — significantly less kernel damage during discharge, particularly valuable for pulse and oat operations
• Debris-tolerant — passes most foreign material that would jam an auger or metering roll
• Easier between-crop cleaning — removable top cover means crop changeovers happen quickly
• Consistent metering — chain speed control delivers reproducible exit moisture

For small mixed-crop prairie operations frequently switching between crops, the EVENFLO’s clean-out advantage at SQ8 scale is meaningful — the smaller drying mass means cleanouts complete quickly when the system is designed for easy access.

Operating Modes

The SQ8 supports continuous-flow drying with mode capability dependent on configuration:

Full Heat (D, E, M configurations) — Maximum drying intensity. Grain exits the dryer hot and is cooled in-bin afterward. Highest published BPH ratings — 405 BPH on corn at 5-point removal. Best for high-throughput drying with adequate in-bin cooling capacity.

Pressure Heat / Pressure Cool (E, M configurations) — Cooling air pushed through the lower portion of the column. Grain exits cooled and ready for direct binning. The most-used mode on prairie operations because it eliminates in-bin cooling complexity.

Pressure Heat / Vacuum Cool (E configuration) — Cooling air pulled through the lower column via vacuum. Different airflow characteristics than pressure cool.

Two-Zone Pressure Heat (M configuration only) — Hotter top zone for moisture removal, cooler bottom zone for finishing. Used for sensitive crops at small scale.

For most prairie SQ8 buyers, the E configuration with pressure cool mode covers virtually every drying scenario.

Transport & Installed Dimensions

Dimension	Value
Overall Length	19′ 0″
Overall Height	14′ 2″
Overall Width (varies by config)	Approximately 9′ 4″
Total Fan HP	10
Auger Load HP	2
Chain Unload HP	2

The SQ8’s smaller size makes it the most relocation-friendly model in the SQ Series, though most installations are still permanent. The 19′ 0″ overall length and lower operating weight allow heavy-haul relocation with standard equipment if circumstances require.

Concrete pad requirement: The SQ8 requires a properly engineered reinforced concrete pad sized for the dryer’s operating weight plus full grain load. The pad requirements are smaller than larger SQ Series models but still require structural engineering. Confirm specifications with your dealer based on local soil conditions.

Electrical service: Three-phase service is preferred. The SQ8’s 10 HP fan motor and supporting auxiliary loads can run on single-phase 220V with appropriate circuit sizing — making the SQ8 a practical choice for yards without three-phase infrastructure. This is one of the SQ8’s distinct advantages over larger SQ Series models for small farm installations.

INTUI-DRY Controls and Remote Monitoring

The SQ8 supports two control system options:

QUANTUM or SPECTRUM Controllers (Standard) — Brock’s standard electronic dryer controllers covering all operating modes, plenum temperature setpoints, moisture targeting, and basic diagnostic logging. Suitable for operators who manage the dryer on-site during operation — which is typical for SQ8-class small farm installations.

INTUI-DRY Controller (Optional Upgrade) — A 15.6-inch full-color touchscreen system with intuitive management of all dryer functions and remote smartphone access.

For most SQ8 operations where the operator is in the yard during drying anyway, the standard controller often delivers everything needed. The INTUI-DRY upgrade represents a higher percentage of total dryer cost on the SQ8 than on larger models — making it a less common selection at this size class. That said, operators who value remote monitoring even at small scale, or who plan to grow into larger SQ Series units later (where INTUI-DRY skills transfer directly), often select the upgrade anyway.

Optional Equipment

Beyond the standard configuration, the SQ8 supports several factory and dealer-installed options:

Small Grain Screen — Smaller perforations for canola, mustard, and other small grains. Reduces maximum throughput on standard crops by approximately 20%.

MOISTURE EQUALIZER System — A patented Brock option that moves the hottest and driest grain through the dryer faster, improving drying uniformity.

INTUI-DRY Touchscreen Upgrade — Replaces the standard QUANTUM/SPECTRUM controller with the 15.6-inch touchscreen and remote access capability.

Reversing Cooling Louvers (E and M configurations) — Adjustable cooling louvers for fine-tuning the cooling air volume.

Service Access Catwalks and Platforms — Required for safe operation and maintenance access. The SQ8’s smaller size means simpler catwalk requirements than larger SQ Series units.

Note on the A (Energy Miser) configuration: The SQ8 is NOT available with the hot air return duct that defines the A configuration on larger models. Buyers prioritizing fuel-recovery technology should consider the SQ16A as the smallest qualifying model.

Best Applications for the SQ8

The SQ8 fits a specific operational profile across small Canadian prairie farms.

Best fit for the SQ8:

• Quarter-section to half-section grain operations (under 500 acres)
• Hobby farms and lifestyle agricultural operations
• Specialty crop producers needing precise drying for niche crops
• Small seed-grade producers
• Operations transitioning from pure natural-air bin drying to supplementary continuous-flow capacity
• Yards without three-phase electrical service (single-phase operation possible)
• Backup dryer for larger operations wanting redundancy at low capital cost

Best fit for the SQ8E (most-installed configuration):

• Small mixed-crop prairie operations
• Operators handling under 10,000 bushels of drying per season
• Specialty operations needing mode flexibility at small scale

Best fit for the SQ8D:

• Single-crop small operations focused on wheat or feed grain
• Buyers prioritizing the lowest possible capital cost

Best fit for the SQ8M:

• Small seed-grade producers
• Specialty crop operations where temperature staging matters at small scale

Less suitable for:

• Operations approaching or exceeding 500 acres on serious crop years — the SQ12 provides meaningful capacity headroom
• Single-combine operations where the SQ8 will frequently bottleneck combine output — step up to SQ12 or SQ16
• High-volume operations or custom drying — fundamentally undersized
• Operations specifically wanting heat-recovery technology — step up to the SQ16A
• Buyers expecting growth in acreage or combine fleet within the dryer’s service life

How the SQ8 Compares to Adjacent Models

SQ8 vs SQ12: The SQ12 has a 12′ 3″ column versus the SQ8’s 8′ 2″, with the same 10 HP fan, and 245 BU holding versus 163 BU. Drying capacity in corn at 5-point removal increases from 405 BPH (SQ8) to 579 BPH (SQ12) — about 43% more throughput. The SQ12 is the more common starting point for typical single-combine operations because the SQ8’s capacity is rarely sufficient for serious annual drying volume. The SQ8 is the right choice specifically for very small operations, hobby farms, or backup applications where the SQ12’s additional capacity isn’t needed.

SQ8 vs SQ16: The SQ16 is significantly larger — 326 BU holding, 15 HP fan, 16′ 4″ column. Corn drying capacity at 5-point removal is 770 BPH on the SQ16 versus 405 BPH on the SQ8 — about 90% more on the SQ16. The SQ16 is also the smallest model available in the A (Energy Miser) configuration. The SQ8 is the right choice only for very small operations that will not grow; the SQ16 is the appropriate single-combine sweet spot for typical prairie farms.

Frequently Asked Questions

What’s the difference between the SQ8, SQ8E, and SQ8M? All three are the same SQ8 model with different drying mode capabilities. SQ8D is full heat only, SQ8E adds louvers for pressure cool modes, SQ8M provides two-temperature-zone operation. The E configuration is the most-installed on prairie farms. Note: the SQ8 is NOT available in the A (Energy Miser) configuration.

Why isn’t the SQ8 available in the A (Energy Miser) configuration? Brock structures the SQ Series so the heat-recovery hot air return duct begins at the SQ16 size class. The engineering logic: the A configuration’s fuel-savings payback works best at higher annual drying volumes than typical SQ8 operations generate. Buyers wanting fuel-recovery technology should consider the SQ16A as the smallest qualifying model.

Is the SQ8 a portable or fixed dryer? The SQ8’s smaller size makes it the most relocation-friendly model in the SQ Series, though most installations are still permanent. Heavy-haul relocation with standard equipment is feasible if circumstances require.

What’s the holding capacity of the SQ8? 163 bushels total — including the wet garner bin, active drying column, and discharge zone.

How much grain can an SQ8 dry per hour? Manufacturer-published capacity in corn is 405 BPH at 5-point moisture removal (Model D, full heat) and 248 BPH at 10-point removal. For prairie crops, capacity varies significantly: wheat at 1.5-point removal can run 800-1,050 BPH, while seed-grade canola at 4-point removal at the 45°C temperature limit may run 190-280 BPH. Always confirm capacity for your specific scenario with your dealer.

Can the SQ8 run on single-phase power? Yes — the SQ8’s 10 HP fan motor can run reasonably on single-phase 220V with appropriate circuit sizing, making the SQ8 the most practical SQ Series choice for yards without three-phase infrastructure. Three-phase remains the preferred service when available.

Does the SQ8 handle canola? Yes — with the small grain screen option and proper temperature management (45°C maximum for seed grade, 82°C maximum for crush grade per Canola Council guidelines). The variable-width column and EVENFLO unloading system handle canola’s specific requirements well even at small scale.

What fuel does the SQ8 use? LP (liquid propane) or natural gas (NG), selected at order. For most SQ8 installations, propane is the practical choice — the SQ8’s lower annual fuel consumption rarely justifies natural gas connection costs unless the service is already at the yard.

How long does an SQ8 last? With proper maintenance, current SQ Series units are designed for 25–30+ year service life. Stainless steel skins typically outlast every other component. The SQ8’s lower utilization on most installations means many SQ8 units actually outlast their stated service life because annual operating hours are lower than larger SQ Series models.

Should I buy an SQ8 or step up to an SQ12? Choose the SQ8 if your operation is genuinely small (under 500 acres), if you’re using the dryer as a backup unit, or if you specifically need the smallest practical commercial-grade dryer. Choose the SQ12 if you have a single-combine operation that will use the dryer regularly — the SQ12 provides meaningful headroom for tough years without dramatically higher capital cost. Most prairie buyers find the SQ12 is the better long-term value.

Is the SQ8 a good first grain dryer? For very small operations, hobby farms, and specialty operations — yes. For typical prairie single-combine grain farms — usually no. The SQ12 is the better starting point for most prairie buyers. The SQ8 is correct only when its size limitations specifically match the buyer’s operational profile.

Can I use the SQ8 as a backup dryer for my main unit? Yes — this is a legitimate use case. Some larger operations install an SQ8 alongside their primary SQ24 or SQ28 specifically to maintain limited drying capability during primary unit maintenance or as overflow capacity during peak harvest. The SQ8’s lower capital cost and simple installation make this redundancy economically feasible.

Related Models in the SQ Series

• Super-B SQ12 — 245 BU holding, smaller-frame option for mainstream small operations
• Super-B SQ16 — 326 BU holding, single-combine prairie sweet spot
• Super-B SQ20 — 408 BU holding, large single-combine and small two-combine
• Super-B SQ24 — 490 BU holding, two-combine prairie sweet spot

For complete buying guidance — sizing math, crop-specific operation, used vs. new pricing, and how Super-B compares to GSI, Vertec, and Neco — read our Super-B grain dryers buyer’s guide.

Browse all grain dryers on Aglist to compare across manufacturers.

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