SIP SPIDER R rotary tedders are robust machines designed for the even spreading and tedding of cut forage. They are intended for medium-sized and large farms, agricultural companies, and agricultural contractors. The range in ROBUST line includes eight mounted and trailed models with four, six, or eight rotors and working widths ranging from 4.5 to 9.15 metres. This allows users to select the right tedder based on field size, forage volume, terrain conditions, and available tractor power.
High-quality and efficient operation is supported by the robust rotor design, adjustable working height and spreading angle, spring tines of different lengths, and the standard HS hydraulic wheel-steering system. These solutions enable precise work along field boundaries, reduce forage losses, and help prevent soil or sand from contaminating the forage. An optional ground-following wheel allows the tedder to follow the terrain more accurately, while the SMART LIFT system available on selected models makes partial lifting and transitions between fields easier.
Innovative rotor design
All models in the ROBUST line are equipped with an innovatively designed rotor. The rotor system consists of robust gear castings and gears in semi-fluid grease for quiet and smooth running. The supporting rotor plate is made of 4 mm thick steel with a lower ring that provides additional reinforcement to the rotor.
The spring tines are robustly mounted on round tubular spring tines holders. The ends of the holders are equipped with plastic safety pins to retain the spring tines in the event of breakage. The spring tines are of different lengths , the inner tines being shorter than the outer, which prevents the fingers from scraping the ground and introducing soil and sand into the forage.
All models except SPIDER R 615|6 and SPIDER R 815|8 /T, the latter equipped with very small rotors, allow the installation of SIP curved spring tines. These are available as an optional equipment. They are recommended for spreading wet, heavy and dense grass, as they lift the forage in two layers, thus ensuring a finer spread.
The tedder can be adjusted to the amount of forage cut by adjusting the spreading angle. Depending on the cutting height, the spring tines can be further adjusted by setting the hitch height.
Optimal adaptation to the working conditions
All models in the ROBUST line are equipped as standard with the Hydraulic Steering system (HS system), for the hydraulic steering of the wheels. When spreading or turning along the edges of the fields, the tedder can be shifted to the left or right, which changes the spreading direction away from the edge and prevents forage loss. Steering of the wheels to the left or right is provided by a hydraulic cylinder via a one-way hydraulic coupling. The opposite pressure is in the hydraulic accumulator mounted on the cylinder. This system can also be used to form a swath when spreading a smaller mass of forage.
For optimum ground adaptation and even tracking of the tedder, a copy wheel is available as an optional equipment. This ensures that the working height is constant during spreading. The turf is thus protected, the forage stays clean, the spring tines have a longer service life and the working speed of the tedder can be higher.
The rotors, equipped with larger wheel dimensions of 16×6.5-8, ensure even weight distribution and reduce pressure on the ground. The dimension of the centre pair of wheels is even larger, 16×9.5-8, and thus adapted to the higher load of the machine in the centre. This enables higher stability during transport and stable storage of the machine in transport position.
All models can be equipped with a night-swath reduction gear, available as an optional equipment.
Comfortable operation
The hinges on four- and six-rotor tedders include 2x double universal joints and 2x universal joints. On eight-rotor tedders there are 2x double universal joints, 2x universal joints and a finger clutch on the outer rotors. The folding mechanism of the outer rotors in combination with the finger clutch allows 180° folding into a compact transport position.
SPIDER R 775|6 and SPIDER R 915|8 are also equipped with the SMART LIFT system, which automatically locks and further raises the outer rotors during partial lift, allowing greater ground clearance.
Two models with four rotors
The two mounted models SPIDER R 455|4 and R 555|4 with four rotors and working widths of 4.5 and 5.3 m are the smallest representatives of the ROBUST line.
The robust construction and outstanding manoeuvrability ensure precise and even spreading on slopes or close to the edges, as well as easy transport. The hydraulic lifting of the rotors allows easy and fast folding of the machine. The tedders are operated by two 1x single-acting (1SA) hydraulic connections, one for hydraulic folding and the other for hydraulic wheel steering (HS).
The diameter of the rotor on the 455|4 model is 1.60 m. The 555|4 is equipped with a larger diameter rotor, i.e. 1.70 m, and is therefore suitable for areas where large and wet grass is being spread. The spreading or turning angle of both models can be adjusted from 14° to 18°. The weight of the tedders is around 640 kg.
Higher capacity with six rotors
High-performance six-rotor tedders ensureoptimum and even spreading or turning of forage. With multi-step adjustment of the working height and spreading angle of the rotor, the forage stays clean and the job is done quick and easy.
The SPIDER R 615|6 is equipped with smaller diameter rotors of 1.30 m, whose spreading angle can be adjusted between 16° and 20°. The weight of this model is 755 kg and the minimum tractor power required is 44kW/60HP, with a capacity of up to 6.20 ha/h. The SPIDER R 685|6 has a rotor diameter of 1.60 m with a spreading angle adjustable between 14° and 18°, a weight of 790 kg and a minimum tractor power requirement of 44kW/60HP. The largest model, SPIDER R 775|6, has a rotor diameter of 1.70 m with a spreading angle between 13° and 19°. The weight of this model is 1170 kg, the tractor power required is 60kW/80HP and the capacity is up to 8 ha/h.
All are equipped with a flexible three-point linkage with stabilisers for easy tracking to the tractor. Two 1x one-way (1EW) hydraulic connections are required to operate the tedders, one for hydraulic folding and the other for hydraulic wheel shift (HS).
The SPIDER R 775|6 is additionally equipped with the SMART LIFT system, which automatically locks and further raises the outer rotors when in partial lift, allowing a greater ground clearance. This model thus requires 1x single-acting (SA) and 1x double-acting (DA) hydraulic connection.
Perfect spreading on larger field
The ROBUST line of eight-rotor tedders offers working widths of 7.85 and 9.15m. At 7.85m working width, there are two versions available, a mounted model SPIDER R 815|8 and a trailed model SPIDER R 815|8 T. They are equipped with a three-point pivoting linkage with stabilisers for easy tractor tracking. In the trailed version, the wide-angle universal joint allows excellent tractor tracking and also a smaller turning angle. For the SPIDER R 915|8, only the mounted version is available.
The hinges for both working widths consists of 2x double universal joint, 2x universal joint and a finger clutch on the outer rotors. The universal joints and finger clutch in a solid housing ensure reliable and quiet operation and easy folding. The folding mechanism of the outer rotors in combination with the finger clutch allows 180° folding into a compact transport position. The robust rotor drive housing with gears immersed in an oil bath ensures smoother and quieter operation.
Depending on the amount of forage, the spreading angle can be set between 16° and 20° on the SPIDER R 815|8 /T and between 13° and 19° on the SPIDER R 915|8. The rotor dimension at a working width of 7.85m is 1.3m. The 9.15m working width has a rotor dimension of 1.60m, which also allows the installation of curved spring tines. The SPIDER R 915|8 is also equipped as standard with the SMART LIFT system, which automatically locks and further raises the outer rotors during partial lift, allowing greater ground clearance and easier turning passes.
The rotors are equipped with large dimension wheels to ensure even weight distribution and reduce pressure on the ground. The dimension of the centre pair of wheels is adapted to the higher load on the machine in the centre and to the stable stowage and storage of the machine in transport position.
Contact us to find the right machine for you
At SIP we offer a wide range of robust tedders of different working widths with a 3-year warranty and no hectare limits. Contact us to find the right one for you!
Send us an enquiry or contact your nearest dealer. We will be happy to advise you and find the best tedder for your needs.
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A wide range of SIP rotary tedder model: Which tedder line should you choose?
The working widths and design of SIP tedders are tailored to suit all types of users. From farms in mountainous and transition areas to medium-sized farms and large agricultural operations and cooperators. The SIP SPIDER range of larger working widths includes both mounted and trailed versions, which are marked with the letter T.
| User type | Terrain type | Recommended SIP line | SIP tedder models |
| Mountain farms, small farms | Steep terrain, slopes, hills, small fragmented plots | ALP/AGILE line: from 3,5 m to 6,0 m | SPIDER A 350|4 ALP, A 400|4 ALP, A 600|6 ALP |
| Medium-sized to large farms, agricultural service providers | Plots larger than 5 ha | ROBUST line: from 4,5 m do 9,15 m | SPIDER R 455|4, R 555|4 SPIDER R 615|6, R 685|6, R 755|6 SPIDER R 815|8, R 815|8 T, R 915|8 |
| Large farms and agricultural enterprises, agricultural service providers | Large areas and longer transport distances | HD line: from 9,0 m do 17,0 m | SPIDER HD 900|8, HD 900|8 T SPIDER HD 1100|10, HD 1100|10 T SPIDER HD 1300|12 T SPIDER HD 1500|14 T SPIDER HD 1700|16 T |
See SIP’s SPIDER R rotary tedders from the ROBUST line in the gallery:
More tips from SIP Lab – Grassland Harvesting Specialist
- Fast wilting for high-quality forage – Sip
- KEEP YOUR FORAGE CLEAN
- MINIMIZE FORAGE CONTAMINATION
- SIP ALP/AGILE LINE
- ROBUST line – Sip
- HD line – Sip
FAQ: Frequently Asked Questions about SIP SPIDER HD Rotary Tedders
SIP SPIDER R machines are rotary tedders from the ROBUST line, designed for the even spreading and tedding of cut forage. Thanks to their range of working widths, robust construction, and easy operation, they are particularly suitable for medium-sized and large farms, agricultural companies, and grassland harvesting contractors.
The SPIDER R range includes eight models with working widths from 4.5 to 9.15 metres. The four-rotor models are the SPIDER R 455|4 and R 555|4; the six-rotor models are the R 615|6, R 685|6, and R 775|6; and the eight-rotor models are the R 815|8, the trailed R 815|8 T, and the R 915|8. This wide selection makes it possible to choose a machine for smaller, irregularly shaped fields or for efficient work across large areas.
The spring tines on SPIDER R tedders are manufactured in different lengths, with the inner tine shorter than the outer one. This design reduces contact between the tines and the ground and helps prevent soil and sand from entering the forage. The working height and spreading angle can be adjusted to suit the operating conditions, while an additional ground-following wheel maintains a consistent working height, protects the grass sward, and reduces wear on the spring tines.
The HS system enables the tedder wheels to be hydraulically steered to the left or right. When working along field boundaries, the spreading direction can be adjusted away from the edge, helping to reduce forage losses. When handling smaller quantities of forage, a swath can also be formed by using lateral offset. All SPIDER R models can additionally be equipped with a gearbox for forming night swaths.
When selecting a model, consider field size, forage volume and moisture content, terrain conditions, required capacity, and tractor power. The four-rotor models are compact and manoeuvrable, while the R 555|4, with its larger rotors, is also suitable for heavier and wetter forage. The six-rotor models offer greater capacity, while the R 815|8 and R 915|8 are designed for efficient operation across the largest areas. The SPIDER R 775|6 and R 915|8 are also equipped with the SMART LIFT system, which makes transitions with the machine partially raised easier.
Key Takeaways
- SIP’s SPIDER R rotary tedders are designed for efficient and even spreading of cut forage, suitable for medium and large farms.
- The ROBUST line includes various models with working widths from 4.5 to 9.15 meters and features like adjustable working height and spreading angle.
- The innovative rotor design ensures smoother operation and prevents soil contamination while offering options for curved spring tines.
- Models feature a hydraulic steering system for precise control and can be equipped with ground-following wheels for improved terrain adaptability.
- For optimal user experience, the tedders are equipped with a SMART LIFT system and are tailored for various conditions and operational needs.
Author: Marusa Krasevec, SIP Lab
