Product Description
Product Description
121:1 low backlash high rigidity pto gearbox & speed reducer for Techman Robot for 5 axis machining center developed and manufactured by WEITENSTAN together with German and ZheJiang technicians for many years.
High precision miniature cycloidal gearbox has the characteristics of smaller, ultra-thin, lightweight and high rigidity, anti-overload and high torque. With good deceleration performance, smooth operation and accurate positioning can be achieved. Integrated design, can be directly connected with the motor, to achieve high precision, high rigidity, high durability and other advantages. It is designed for high speed ratio, high geometric accuracy, low motion loss, large torque capacity and high stiffness applications. The compact design (minimum OD ≈40mm, currently the world’s smallest precision cycloidal pin-wheel reducer) allows it to be installed in limited Spaces.
Reducer drawings
Detailed Photos
Product Advantage
121:1 low backlash high rigidity pto gearbox & speed reducer for Techman Robot advantages:
1, fine precision cycloidal structure
Ultra flat shape is achieved through differential reduction mechanism and thin cross roller bearing, contributing to the compact size of the equipment. The combination of small size and unmatched superior parameters achieves the best combination of performance, price and size (high cost performance).
2. Excellent accuracy (transmission loss ≤1 arcmin)
Through the complex meshing of precision cycloid gear and high precision roller pin, higher transmission accuracy is achieved while maintaining small size and high speed ratio.
3, high rigidity
Increase the mesh rate to disperse the load, so the rigidity is high.
4. High overload capacity
It maintains trouble-free operation under abnormally low noise and vibration conditions while ensuring excellent overturning and torsional stiffness parameters. Integrated axial radial cross roller bearings, high load capacity and overload capacity of the reducer, can ensure users to provide a variety of temperature range of applications.
5, the motor installation is simple
Electromechanical integration design, can be directly connected with the motor, any brand of motor can be installed directly, without adding any device.
6. Maintenance free
Seal grease to achieve maintenance free. No refueling, no mounting direction restrictions.
7, stable performance
The manufacturing process of high wear-resistant materials and high precision parts has been certified by ISO9000 quality system, which guarantees the reliable operation of the reducer.
Product Classification
WF Series
High Precision Miniature Reducer
WF series is a high precision micro cycloidal reducer with flange, which has a wide range of applications. This series of reducers includes precise reduction mechanisms and radial – axial roller bearings. The unique design allows load to act directly on the output flange or housing without additional bearings. WF series reducer is characterized by module design, can be installed through the flange motor and reducer, belongs to the motor directly connected reducer.
WFH Series
High Precision Miniature Reducer
WFH series is a hollow form of high precision miniature cycloidal reducer, wire, compressed air pipeline, drive shaft can be through the hollow shaft, non-motor direct connection type reducer. The WFH series is fully sealed, full of grease and includes precise deceleration mechanism and radial – axial roller bearings. The unique design allows load to be acted directly on the output flange or housing without additional bearings.
Product Parameters
| Size | reduction ratio | Rated output moment | Allowable torque of start and stop | Instantaneous allowable moment | Rated input speed | Maximum input speed | Tilt stiffness | Torsional stiffness | No-load starting torque | Transmission accuracy | Error accuracy | Moment of inertia | Weight | |
| Axis rotation | Shell rotation | Nm | Nm | Nm | rpm | rpm | Nm/arcmin | Nm/arcmin | Nm | arcmin | arcmin | kg-m² | kg | |
| WF07 | 21 | 20 | 15 | 30 | 45 | 3000 | 6000 | 6 | 1.1 | 0.12 | P1≤±1 P2≤±3 | P1≤±1 P2≤±3 | 0.52 | 0.42 |
| 41 | 40 | 0.11 | 0.47 | |||||||||||
| WF17 | 21 | 20 | 50 | 100 | 150 | 3000 | 6000 | 28 | 6 | 0.21 | P1≤±1 P2≤±3 | P1≤±1 P2≤±3 | 0.88 | 0.85 |
| 41 | 40 | 0.18 | 0.72 | |||||||||||
| 61 | 60 | 0.14 | 0.69 | |||||||||||
| WF25 | 21 | 20 | 110 | 220 | 330 | 3000 | 5500 | 131 | 24 | 0.47 | P1≤±1 P2≤±3 | P1≤±1 P2≤±3 | 6.12 | 2 |
| 31 | 30 | 0.41 | 5.67 | |||||||||||
| 41 | 40 | 0.38 | 4.9 | |||||||||||
| 51 | 50 | 0.35 | 4.56 | |||||||||||
| 81 | 80 | 0.31 | 4.25 | |||||||||||
| WF32 | 25 | 24 | 190 | 380 | 570 | 3000 | 4500 | 240 | 35 | 1.15 | P1≤±1 P2≤±3 | P1≤±1 P2≤±3 | 11 | 4.2 |
| 31 | 30 | 1.1 | 10.8 | |||||||||||
| 51 | 50 | 0.77 | 9.35 | |||||||||||
| 81 | 80 | 0.74 | 8.32 | |||||||||||
| 101 | 100 | 0.6 | 7.7 | |||||||||||
| WF40 | 25 | 24 | 320 | 640 | 960 | 3000 | 4000 | 377 | 50 | 1.35 | P1≤±1 P2≤±3 | P1≤±1 P2≤±3 | 13.2 | 6.6 |
| 31 | 30 | 1.32 | 12.96 | |||||||||||
| 51 | 50 | 0.92 | 11.22 | |||||||||||
| 81 | 80 | 0.81 | 9.84 | |||||||||||
| 121 | 120 | 0.72 | 8.4 | |||||||||||
Installation Instructions
Company Profile
Q: Speed reducer grease replacement time
A: When sealing appropriate amount of grease and running reducer, the standard replacement time is 20000 hours according to the aging condition of the grease. In addition, when the grease is stained or used in the surrounding temperature condition (above 40ºC), please check the aging and fouling of the grease, and specify the replacement time.
Q: Delivery time
A: Fubao has 2000+ production base, daily output of 1000+ units, standard models within 7 days of delivery.
Q: Reducer selection
A: Fubao provides professional product selection guidance, with higher product matching degree, higher cost performance and higher utilization rate.
Q: Application range of reducer
A: Fubao has a professional research and development team, complete category design, can match any stepping motor, servo motor, more accurate matching.
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Shipping Cost:
Estimated freight per unit. |
To be negotiated |
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| Application: | Motor, Machinery, Agricultural Machinery, Cartesian Robot |
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| Hardness: | Hardened Tooth Surface |
| Installation: | Vertical Type |
| Customization: |
Available
| Customized Request |
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PTO Shaft Safety Chains
PTO shaft is the part of a tractor that helps transfer power from the tractor to the equipment it is hooked to. A PTO shaft is important if you have a tiller or bush hog. The correct PTO shaft size is crucial for both the tractor and the equipment. If the PTO shaft size is not correct for your equipment, it may not work.
Safety chains
<br/Safety chains are an essential part of securing your PTO shaft. They prevent a rotating plastic shield from coming loose and causing injury or damage. It is important to protect your PTO and any other drive shafts on your machine. Watch the video below for more information about the dangers of unguarded PTOs.
PTOs are an efficient way to transfer mechanical power between tractors and implements. They helped revolutionize North American agriculture during the 1930s. Despite their convenience, PTOs have also proven to be one of the most common farm machinery hazards. This fact sheet outlines several important PTO safety precautions.
Safety chains for PTO shafts are necessary to protect both tractor and implement from damage. The PTO shaft must be attached properly to the tractor and the implement before starting the equipment. Before operating, be sure that the safety chains are positioned in a way that allows them to fully move. When operating the PTO, avoid being too aggressive as this can damage the drive line and shaft. For further safety, make sure to fit a torque limiter or clutch on the implement end of the PTO shaft.
PTOs are great for plowing, mowing, and shredding, but they also have potential to cause injuries if you don’t use a safety chain. It’s best to get a chain that is long enough to prevent injuries. Also, be sure that the PTO shaft does not compress completely at any point during the operating range. There should be several inches of overlap in the longest operating extension of the PTO.
Another common hazard with PTOs is IID shafts. While many machines and tractors have driveline guards, these are often missing. If you have a PTO with an IID, you should consider installing a safety chain.
Shield
A swingable tractor PTO shaft shield assembly consists of an inverted U-shaped shield member slidably attached to a bracket. It extends above the PTO shaft and has several notches and pins that engage each other. It can be held in a number of positions and can be retracted when not in use. It also includes a cover member that covers the space between the shield and tractor and abuts the raised portion of the shield member.
The PTO shaft shield is typically made of plastic, but it can also be made of metal. Plastic is less likely to break or damage than metal. The shield is supported by a bracket 51 with a curved distal end 57 and a non-metallic guard 59. When used in conjunction with a bracket, a PTO shaft shield should be properly installed to prevent damage to the shaft.
Keeping the PTO shaft shield in good condition is crucial to the safety of your tractor and your workers. An improperly installed PTO shaft shield can result in severe injuries. It may also ensnare or strike people in the vicinity. Proper maintenance will prevent many of these injuries. Equipment manufacturers have made great strides in reducing the risks of PTO mishaps. Operators are also responsible for keeping the shields in good condition. Removing the guards will only increase the risk to the operator.
A PTO shaft shield is a tubular assembly that is mounted on the tractor PTO shaft. It consists of two telescopic pieces that are held in place by shield support bearings. This shield protects the PTO shaft and the universal joints from debris and prevents premature wear. The shield can be easily removed and replaced if necessary.
IID shaft guard
The IID shaft guard is a safety device used to protect PTO powered machinery from the possibility of separating while in use. The shaft, which is a telescoping shaft, is attached to the PTO stub on tractors. The telescopic feature is convenient when moving across uneven ground. However, this type of shaft can cause serious injury if it separates while in use.
The IID shaft guard can prevent these injuries by completely covering the shaft. The guard is made of metal or plastic and rotates along with the shaft. A person can react in less than five tenths of a second, making the IID shaft guard an important part of PTO safety.
PTO shafts rotate at speeds as high as 540 rpm, which is very fast. A limb could be wrapped around the driveline shaft, causing a serious injury or death. Because of the speed of a PTO, it can be difficult for an individual to discern whether it is engaged or not and may not be aware of the danger.
An IID shaft guard should be fitted to every tractor PTO shaft. It should be tested and rotated regularly. It is also important to keep the tractor engine off when working around the PTO shaft. Using a drawbar to protect driveline components is also important. It will prevent stress on the driveline and reduce the possibility of separation.
Overrunning clutch
An overrunning clutch on a PTO shaft is a mechanism that allows the PTO shaft to rotate freely in one direction while restricting the speed of the implement being hauled behind the tractor. This clutch is also useful for preventing the speed of the implement from exceeding the speed of the tractor while slowing down. It comes in two basic configurations, one for a clockwise and the other for a counter-clockwise direction.
Another type of overrun clutch is used on tractors with a PTO driven bush hog. A bush hog has a flywheel and blades that drive the transmission through the PTO shaft. Without an overrunning clutch, these implements would freewheel while the tractor is driving and would potentially break the shaft.
A PTO overrunning clutch prevents power from backfeeding into the transmission, the part that transmits power to the rear wheels. Without an overrunning clutch, the tractor could backfeed power, causing an accident if the blade assembly hits an object. As such, it is essential to use the overrunning clutch to ensure that your tractor will be safe.
Direction of rotation
Despite its name, the direction of rotation of a PTO shaft can change if necessary. Most PTOs have a single-direction rotation, but you can often reverse the direction by installing a reverse PTO adapter. However, you should only use reverse PTOs when absolutely necessary.
A standard PTO rotation direction has been defined by the International Organization for Standardization (ISO). It is considered necessary to adhere to this standard, as improper rotation can cause damage to implements attached to a PTO. This standard helps farmers avoid problems such as ruined implements. While the direction of rotation of a PTO shaft is not always the same for all PTOs, there are some tractors that allow it to rotate both ways, while others have no restrictions.
The direction of rotation of a PTO shaft can be changed by using a hydraulic pump. Another way to connect a PTO is through a “sandwich” type split shaft unit. These units are mounted between the transmission and engine, and they usually receive drive directly from the engine shaft. They can also deliver complete engine power to a PTO. However, you must modify your vehicle’s driveline to install such a split-shaft unit.
editor by CX 2023-07-12