PRF120 Series Precision Planetary Gearbox
Type: planetary gearbox with straight teeth
Degree of gearbox protection grade: IP65
One stage: ratio 3, 4, 5, 7, 10; backlash ≤ 10 arcmin; efficiency ≥ 97%
Two stage: ratio 12, 15, 16, 20, 25, 28, 35, 40, 50, 70; backlash ≤ 18 arcmin; efficiency ≥ 94%
Three stage: ratio 100, 125, 140, 175, 200, 250; backlash ≤ 25 arcmin; efficiency ≥ 90%
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- Quality Assurance
Customization Available
Product Introduction
Product Overview
This PRF120 planetary gearbox is a type of planetary gearbox with straight teeth. It has a protection grade of IP65, making it operate well in challenging environments. This high torque planetary gearbox has three stages. In its one-stage configuration, this PRF120 gearbox offers a range of gear ratios including 3, 4, 5, 7, and 10, with a minimal backlash of ≤ 10 arcmin and an impressive efficiency of ≥ 97%. For the two-stage variant, ratios such as 12, 15, 16, 20, 25, 28, 35, 40, 50, and 70 are available, accompanied by a backlash specification of ≤ 18 arcmin and a commendable efficiency of ≥ 94%. The three-stage configuration provides ratios of 100, 125, 140, 175, 200, and 250, with a backlash limit of ≤ 25 arcmin and a minimum efficiency of ≥ 90%. This planetary gearbox is designed to deliver precise motion control and high efficiency across various applications, making it particularly well-suited for demanding environments
PRF Naming Rule ( For example: PRF-090N-010-20-19-1)
Performance Data
|
Technical Parameter |
1 stage |
2 stage |
3 stage | |||||||||||||||||||
|
Ratio |
3 |
4 |
5 |
7 |
10 |
12 |
15 |
16 |
20 |
25 |
28 |
35 |
40 |
50 |
70 |
100 |
125 |
140 |
175 |
200 |
250 |
|
|
Nominal Output Torque T2N |
Nm |
51 |
72 |
76 |
91 |
74 |
68 |
72 |
68 |
68 |
72 |
68 |
72 |
68 |
72 |
86 |
65 |
69 |
65 |
69 |
65 |
69 |
|
Emergency Stop Torque T2NOT |
Nm |
3 times of Nominal Output Torque |
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|
Nominal input Speed n1N |
rpm |
3000 |
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|
Max.Input Speed n1B |
rpm |
6000 |
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|
Standard Backlash P2 |
arcmin |
≤10 |
≤18 |
≤25 |
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|
Torsional Rigidity |
Nm/arcmin |
12 |
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|
Max.Bending moment F2rB |
N |
3780 |
||||||||||||||||||||
|
Max.Axial Load F2aB |
N |
1890 |
||||||||||||||||||||
|
Service Life |
hr |
20000 |
||||||||||||||||||||
|
Efficiency η |
% |
≥97% |
≥94% |
≥90% |
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|
0perating Temp |
℃ |
-10℃~90℃ |
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|
Lubrication |
Synthetic lubrication oils |
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|
Degree of Gearbox Protection |
IP65 |
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|
Mounting Position |
all directions |
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|
Noise Level(n=3000rpm, |
dB(A) |
65 |
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|
Mass Moments of Inertia J1 |
kg.cm2 |
0.31 |
0.27 |
0.26 |
0.25 |
0.25 |
0.25 |
0.26 |
0.27 |
0.26 |
0.26 |
0.25 |
0.26 |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
Mechanical Dimension
Matched Motor Size
| PRF120 Series | Stage | Ratio | Diameter of output shaft | Diameter of input shaft | Diameter x length of motor shaft/Diameter and height of pilot on motor/QTYs-diameter-spacing of mounting holes |
| One Stage | 3/4/5/7/10 | 25 | 22/24 | Φ22×58/Φ110×6/4-Φ9-Φ145 | |
| Φ24×58/Φ110×6/4-Φ9-Φ145 | |||||
| Two Stage |
12/15/16/20/25/28/ 35/40/50/70 |
25 | 22/24 | Φ22×58/Φ110×6/4-Φ9-Φ145 | |
| Φ24×58/Φ110×6/4-Φ9-Φ145 | |||||
| Three Stage |
100/125/140/175/ 200/250 |
25 | 22/24 | Φ22×58/Φ110×6/4-Φ9-Φ145 | |
| Φ24×58/Φ110×6/4-Φ9-Φ145 |
FAQ
Q: What are your typical payment methods?
A: Our standard payment method involves a 50% down payment via T/T in advance, and the remaining 50% balance is paid via T/T before shipment. However, for old customers, we can adjust the payment terms as needed. Please noted that Paypal is only available for sample orders.
Q: How does a planetary gearbox function?
A: In a planetary gearbox, the input torque is transmitted to a central gear called the sun gear, which meshes with multiple planet gears. These planet gears rotate around the sun gear while also meshing with an outer ring gear (annulus gear), resulting in torque output.
Q: What are the various types of planetary gear configurations?
A: The common planetary gear configurations include spur planetary gears, helical planetary gears, and planetary gear trains with multiple stages, each offering distinct advantages for different applications.
Q: How is the gear ratio determined in a planetary gearbox?
A: The gear ratio in a planetary gearbox is determined by the number of teeth on the sun gear, planet gears, and annulus gear. It is calculated by dividing the number of teeth on the annulus gear by the sum of the number of teeth on the sun gear and twice the number of teeth on a single planet gear.
Q: How do planetary gearboxes achieve speed reduction?
A: Planetary gearboxes achieve speed reduction by meshing the input sun gear with multiple planet gears. The planet gears rotate around the sun gear while engaging the stationary outer ring gear (annulus gear). The counter-rotation between the planet gears and the annulus gear reduces the output speed compared to the input, enabling efficient speed reduction in a compact design.
Q: What after-sales services do you offer?
A: We provide a 12-month warranty for our products from the dispatch date. Additionally, during the initial stages of your project, we offer free technical advisory services to support you in making informed decisions and ensuring the success of your venture.
Q: What are the main components of a Planetary gearbox?
A: The main components of a planetary gearbox include sun gear, planet gear ring, input shaft, output shaft, bearings, etc. These components work together to provide torque multiplication, speed reduction, and rotational output in a compact and efficient manner.
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