880-SK
1-Drive Ring
The drive ring's large diameter along with wall to wall suspension arms guarantee the perfect equilibrium of the machine without counter weight that has to be adjusted every now and then to match silage conditions.
2-Fiberglass discharge chute
The deep-sided fiberglass chute features a smooth and slippery finish inside. Silage flows smoothly through the door. A 48" replaceable stainless steel liner protects the high wear area.
3- The polyethylene guide rollers
are adjustable for accurate alignment of the chute.
4-Hexapod suspension
Three 5/16" galvanized aircraft type cable support the unloader from 3 widely spaced points which results in a level cut from top to bottom.
5-New Stainless steel auger shroud
Auger shroud cover and sides are made of stainless steel to resist silage acid and corrosion. The rugged structural steel tube frame features a welded construction for extra rigidity. Made of 3/16" thick steel, the 3 ring segments feature a big 9' diameter on the 12' to 20' models. They are reversible giving them twice the durability.
Double 48" long splice plates provide rigidity to the whole assembly. On the 24' models, ring segments are beefed-up and make a large 11' diameter ring for a stable and well- balanced machine.
6-Big ten inch auger
Loaded with sharp cutting knives, the big 10" auger delivers a steady stream of silage to the impeller for high capacity output, even in frozen and hard packed silage.
7-New motor guard A voluminous cage protects the ring drive motor from overheating during the non-stop filling operation.
8-High capacity blower
The 26" high capacity blower with 3 stainless steel adjustable paddles rotating at 1,225 R.P.M. for 8,330 feet per minute tip speed, assures that silage will be thrown all the way through the door.
9-New stainless steel chute base
New stainless steel chute base resists wear and corrosion. Its unique inclined design automatically sets the silage flow for maximum throwing performance.
10-Pressure wheel Cantilevered pressure wheel holds the chipper wheel tight against the silo wall.
Quality transmission
Providing the power to the heavy-duty auger and knives in frozen, hard packed silage requires a heavy-duty gear box. The efficient bevel gears transmission meet the challenge. A heavy flange coupling between auger and gear box prevents auger from seizing to transmission output shaft. (Filled with synthetic oil)
Efficiency : 97% Rated : 20 h.p.
Auger
The massive 10" heavy-duty auger is made of 1/4" thick flighting welded on a 4" O.D. tube for rigidity. It is double flighted at the chipper wheel end to allow the machine to run smoothly in frozen and hard-packed silage. Sharp hardened knives can be installed on auger to chop up the toughest material. Coupled to the gearbox by a 3-bolt flange coupling, the auger assembly is easy to remove.
Chipper wheel
A big oil-impregnated spherical bronze bearing provides years of trouble free operation. Being self-lubricating, it is maintenance free. The heavy chipper wheel is made of ductile iron to resist shocks. Six self-sharpening hardened steel blades remove silage that clings to the wall.
Heavy-duty impeller
The high-capacity 26" diameter blower with 3 stainless steel adjustable impeller paddles that can be set in a swinging or fixed position gives maximum silage and haylage throwing capacity. An adjustable cut-off plate located in the throat of the impeller housing increases blowing capacity and prevents haylage from carrying around inside the housing.
The blower band is made of 3/16" stainless steel for longer life and less gum build-up.
The inspection cover features air intakes for less air resistance and more throwing power. It can be removed easily for adjustments and servicing.
Ring drive transmission
(shown with guard removed)
A positive ring and gear drive system provides steady, even cutting under all conditions. Sprocket is driven by a 100:1 worm gear reduction on a shaft from the auger gear box. The ring drive torque limiter maintains accurate torque release and protects drive components.
Independent power ring drive
(shown with guard removed)
The independent power ring drive models require less power during distribution. A reliable industrial coupling between motor and the 500:1 gear box assures positive drive. The new ratchet-type torque limiter provides accurate torque release under adverse conditions while protecting the drive system.
Collector ring
Electrical power is transferred from stationary to rotating part of the machine by extra-large brushes and thick copper alloy rings, assuring a maximum contact for an uninterrupted transmission power.
CSA / UL Approved
Power cable looping kit
To eliminate the need of handling the heavy power cable when changing doors or raising the unloader for filling, Valmetal offers sturdy insulated cable clamps made of molded polycarbonate, these support and guide the power cable as it automatically coils or uncoils when unloader is lowered or raised in silo.
Offset suspension arms
If you prefer a lateral style silage spreader, the Valmetal 880-SK can be ordered with offset suspension arms, therefore the unloader can be raised into the roof, completely out of the way allowing you to fill your silo to the very top without interference from the machine.
Available for 16' to 24' models only.
Torque arm
No more worry about winch location, the Valmetal 880-SK is equipped with a sturdy torque arm in replacement of the anchor chain to keep the machine from twisting. A telescoping chute support maintains proper alignment of the multi-radius discharge chute for accurate silage stream.
Valmetal Control Systems
Valmetal control systems feature high quality CSA and UL approved components. Sealed fiber enclosures resist corrosion and dust. The inside of the boxes remain dry even in the usually humid environment of the feed room.
Control Panel
The weather and dust proof fiber enclosure does not rust. It protects the ammeter and all the other electrical components from often harsh and humid environment of the feed room.
For the unloader with independent ring drive system, an ON/OFF switch allows the operator to stop or start the ring drive motor independently from the main motor, this allows time to empty the auger and blower completely in order to avoid freeze-ups for easy next meal start-up.
Automatic lowering control
Time-saver, the Valmetal Automatic Lowering Control, in conjunction with a motorized winch, lowers the unloader automatically after each complete revolution to maintain a steady full-flow feeding, therefore freeing you from standing by the winch.
The let-down time is easily adjusted to match the unloader's motor capacity and silage condition, it permits precise adjustments for unloading at optimum efficiency and keeps the silage surface level. Of course, you can also, raise the unloader anytime with the push of a button.
Dual Control Panel
The Valmetal Dual Control Panel combines all the characteristics and components of a regular Valmetal silo unloader control panel and those of the automatic lowering controller in the same sturdy fiber enclosure.
When used with a 4 button remote control it allows the operator to run both the unloader and the winch from a position.
Remote start & stop control
Designed for safety, the convenient remote control station allows the operator to lock out other control locations to prevent accidental start-up of the unloader while servicing.
In addition to putting you in control of the unloader while servicing, it can be used to start and stop your Valmetal Unloader Distributor between loads when filling the silo.
Heavy duty winch
The Valmetal winch features a heavy cast iron gear reducer. Its 50 to 1 gear ratio makes it easy to raise or lower the unloader. A reliable brake mechanism prevents accidental unwinding of the suspension cable. The spool holds up to 120' of 5/16" aircraft type steel cable.
Electric two-speed hoist
Flip a switch to raise or lower your silo unloader. Same heavy-duty hoist with 1/2 HP reversing motor and extra reduction for maximum convenience in unloader control.
Because of the 2 step motor pulley the speed can be changed in seconds without tools. It lowers at approximately 1' per minute for better control, and raises the unloader to the top of the silo at approximately 2' per minute.
Unloader & Distributor
«It is proven that a large part of making top-quality silage depends on uniform distribution of material during the silo filling process.»
To achieve this uniform distribution, it is crucial to keep the silage flowing evenly at the silo wall, forming a slightly inverted cone as filling progresses all the way to the top and this is exactly the type of filling pattern you will get from your Valmetal Unloader & Distributor.
It takes only minutes for one man to transform the Valmetal 880-SK to a silage distributor.
According to the National Silo Association, uniform distribution provides major benefits such as :
- Uniform pressure on silo wall
- More compact silage and better fermentation
- Increased silo capacity
- Better unloader performance
Gravity type distributor
In small diameter silos (12' to 16'), the gravity type distributor is normally sufficient to achieve a uniform distribution all the way to the top.
Here is how it works : from the center fill pipe, the stream of silage flows down on the slanted board which pivots slowly with the unloader at the top of the silo, directing the silage towards the silo wall to achieve a slightly inverted cone pattern as filling progresses.
Powered distributor
Recommended for large diameter silos, a motorized rotor is added to the distributor board. The 4 paddle rotor throws silage against silo wall to get uniform distribution of silage in the shape of a slightly inverted cone.
Because VALMETAL Inc. is constantly improving products, we reserve the right to change design and/or specifications without notice.