9YFS-2.2 Twin-Chamber Square Hay Baler with Automatic Twine Tying
9YFS-2.2 twin-chamber square hay baler with 2,200 mm pickup width. Two independent 460×360 mm chambers produce double the bale output per pass. Automatic rope baling, 4 D-type knotters. Requires ≥51.5 kW tractor. OEM export orders accepted.
9YFS-2.2 Twin-Chamber Square Hay Baler — Double Output, One Pass
2 independent bale chambers | 460×360 mm per chamber | 4 D-type knotters | 2,200 mm pickup width | ≥51.5 kW PTO
Features of the 9YFS-2.2 Twin-Chamber Square Hay Baler
The 9YFS-2.2 is a tractor-towed square hay baler built around a twin-chamber architecture that produces two bales simultaneously from a single windrow pass. Where a conventional single-chamber machine ties one bale per cycle, the 9YFS-2.2 feeds crop into two independent 460×360 mm compression chambers side by side, each driven by its own plunger and served by a dedicated pair of D-type knotters. The result is a hay baling machine that delivers roughly double the volumetric output for the same tractor, operator, and field time.
At a machine weight of 3,115 kg and an overall length of 5,600 mm, the 9YFS-2.2 is engineered for commercial-scale forage operations — contract baling businesses, large livestock feed suppliers, and straw recycling contractors who need to clear acreage quickly during the narrow harvest window.
- 2,200 mm Spring-Tooth Pickup: The wide spring-tooth reel lifts windrows left by mowers up to 2.2 m cut width, cleanly collecting wheat straw, alfalfa, and rice straw with minimal soil pickup or leaf loss.
- Dual Fork Feeding Mechanism: Two independent fork feeders pre-charge each compression chamber in measured flakes, delivering consistent plunger loading and keeping bale weight variation below ±5 % across a full day's run.
- 4× D-Type Knotters (2 per chamber): Each chamber is served by two synchronised D-type knotters that tie both sides of the bale simultaneously, cutting tying cycle time and virtually eliminating single-side missed ties — a common failure point on high-throughput automatic twine square hay baler systems.
- Automatic Rope Baling: Fully automated twine wrapping removes the need for manual tying at any point. Operators can refill twine spools without stopping production for extended periods.
- Heavy-Duty Welded Chassis: The main frame is fabricated from high-strength structural steel with stress-relief treatment before painting. It is designed to absorb the asymmetric plunger loads of two offset compression cycles without frame fatigue.
- Trailed Drawbar Hitching: Standard drawbar attachment means the 9YFS-2.2 couples to any tractor with a 540/1000 RPM PTO output of ≥51.5 kW (~70 HP), without requiring a dedicated three-point linkage.
Technical Specifications of the 9YFS-2.2 Square Hay Baler
| Non. | Article | Unité | Spécification |
|---|---|---|---|
| 1 | Nom du modèle | — | Model 9YFS-2.2 Double-Chamber Square Baler |
| 2 | Hitching Method | — | Trailed (Drawbar) |
| 3 | Picking Width | mm | 2,200 |
| 4 | Feeding Inlet Width | mm | — |
| 5 | Picker Structure | — | Type de dent à ressort |
| 6 | Feeder Structure | — | Fork Feeding Mechanism |
| 7 | Knotter Type | — | D-Type |
| 8 | Number of Knotters | pc | 2 × 2 (4 total, 2 per chamber) |
| 9 | Compression Chamber Section (W×H) | mm | 460 × 360 × 2 (twin chambers) |
| 10 | Méthode de mise en balles | — | Automatic Rope Baling |
| 11 | Matching Power Range | kW | ≥ 51.5 (~70 HP) |
| 12 | Overall Dimension (L×W×H) | mm | 5,600 × 2,780 × 1,790 |
| 13 | Poids de la machine | kg | 3,115 |
How the Twin-Chamber Square Hay Baler Works
The 9YFS-2.2 processes crop in a continuous four-stage sequence. Understanding the flow explains why twin-chamber output is approximately double that of a single-chamber hay baling machine running at the same ground speed:
Pickup — 2,200 mm Spring-Tooth Reel
The spring-tooth reel lifts the full windrow width off the ground and conveys it rearward into the central feeding throat. Tine geometry is calibrated to prevent soil contamination while handling both fine alfalfa stems and coarse corn stover without blockage.
Splitting & Fork Feeding — Dual Chutes
Incoming crop is divided into two equal streams and routed into the left and right fork feeders. Each feeder pre-compresses material into measured flakes before delivering them to the plunger chamber. Consistent flake volume is the primary driver of bale weight uniformity.
Dual Plunger Compression — 460×360 mm Chambers
Two offset plungers compress crop in alternating strokes. The flywheel stores kinetic energy between strokes, smoothing the PTO torque demand on the tractor and preventing speed drops during dense-material surges. Both chambers produce bales at 460×360 mm cross-section.
Automatic Tying — 4× D-Type Knotters
When the star-wheel trip detects the preset bale length, both knotters on that chamber fire simultaneously, tying the bale on both sides in a single cycle. The completed bale exits onto the discharge chute while the next compression cycle has already begun in the same chamber.
Advantages of the Twin-Chamber Baling System
2×
Bale output per field pass vs. single-chamber machines at the same ground speed
4 Knotters
Independent per-chamber tying — one chamber failure does not halt production
≤±5%
Bale weight variation across a full day's run due to dual fork-feed metering
1 Operator
One tractor + one operator achieves what previously required two separate machines
- Lower cost per bale: Fuel, labour, and depreciation are shared across double the output. On a 10-hour baling day, the per-bale fixed cost of operating the 9YFS-2.2 is roughly half that of running two single-chamber machines with two operators.
- Fewer headland turns: Because output doubles per pass, the total number of passes needed to clear a given field is halved. Fewer turns means less compaction on headlands and a faster field turnaround during time-critical harvest windows.
- Independent chamber redundancy: Each chamber, knotter set, and fork feeder operates independently. If one knotter requires adjustment mid-field, the operator can continue baling on the other chamber while the issue is resolved, preventing full machine downtime.
- Uniform bale dimensions for automated handling: Both chambers produce identical 460×360 mm cross-section bales, which align into parallel rows on discharge. This consistency is essential for buyers whose customers use automated bale conveyors or mechanical bale stacking systems.
High-Density Bale Formation for Efficient Storage and Transport
The 460×360 mm compression chamber on each side of the 9YFS-2.2 produces bales dense enough to stack 6–8 layers high in standard warehouse racking without bale deformation. High density directly reduces the number of truck loads required to transport a given tonnage of straw or forage — a measurable cost saving for any commercial buyer:
Storage Footprint
High-density bales reduce storage footprint by up to 30 % compared to loosely compressed bales of the same dry weight, allowing more material per barn bay or warehouse pallet position.
Transport Efficiency
Uniform 460×360 mm cross-section bales stack efficiently on flatbed trucks. Consistent shape means fewer gaps per load and easier securing with standard load straps, reducing re-handling time at the delivery point.
Moisture Resistance
Tightly compressed bales shed surface rain more effectively than low-density bales. The dense outer layer limits moisture penetration depth, preserving nutritional content and reducing dry-matter loss during outdoor storage.
Pre-Condition Your Crop for Better Bale Density
Bale density is heavily influenced by crop moisture at the point of pickup. Pairing the 9YFS-2.2 with a
trailed mower conditioner
that crimps and wilts the swath before baling typically reduces pickup moisture by 3–5 percentage points — enough to push bale density noticeably higher and cut storage losses. Conditioning also shortens the field-drying window, letting you bale a day sooner during unsettled weather.
Suitable Crops for the Square Hay Baler
The 9YFS-2.2 square hay baler handles the full range of annual and perennial crop residues and forage species processed by commercial operations:
Wheat & Barley Straw
The most common application. Post-combine windrows are picked up and baled directly for bedding contractors and straw board manufacturers.
Rice Straw
High-silica, slippery material that challenges conventional pickups. The spring-tooth tines on the 9YFS-2.2 grip rice straw reliably without leaving excessive crop on the ground.
Alfalfa & Clover
High-value dairy forage where leaf retention matters. Dense baling locks leaves inside the bale, reducing dry-matter losses during storage versus loosely tied bales.
Corn Stover
Bulky, variable-density material suited for biogas plants and mushroom substrate buyers who need consistent bale dimensions for automated feed systems.
Cotton Stalks
Coarse and fibrous. The fork feeding mechanism pre-compresses stalks before plunger entry, preventing the bridging that blocks conventional auger-feed systems on this crop.
Mixed Forage Grass
Pasture mixes and roadside grasses for biomass energy and erosion-control bale markets, where volume and dimension consistency matter more than specific crop identity.
Frequently Asked Questions about Square Hay Balers
What tractor is needed to run the 9YFS-2.2 automatic twine square hay baler?
A tractor with ≥51.5 kW (~70 HP) PTO output is required. Standard 540 or 1000 RPM PTO shaft connection. Most 70–120 HP utility or row-crop tractors are compatible via the trailed drawbar hitch.
How does the twin-chamber design increase output compared to a single-chamber hay baling machine?
The 9YFS-2.2 splits the windrow into two streams, compressing and tying bales in two chambers simultaneously. Output per hour is approximately double that of a single-chamber baler running at the same ground speed, with one operator and one tractor.
Do you accept OEM orders and export to international markets?
Yes. OEM and ODM orders are accepted with CE/export documentation. We supply buyers in Australia, the Netherlands, Brazil, South Korea, and more. Contact us with your volume and destination for a tailored quotation.
Ready to Double Your Baling Output? Get a Quote Today.
Tell us your crop type, field acreage, and tractor HP. We'll confirm compatibility and send a full quotation within 24 hours.
CE documentation, operation manual, and spare-parts list included with every export order.
ISO 9001 certified · OEM / ODM accepted · Ships to 30+ countries
The 9YFS-2.2 Double-Chamber Square Baler is manufactured to ISO 9001 standards. CE documentation available for all export orders. © Ever-Power Agricultural Machinery Group.
