Hover to zoom
Quick Specs
≤3'
Backlash
≥97%
Efficiency
155
Max Nm
PFK Series
High precision helical gear planetary gearboxes with hollow shaft output. Ideal for industrial automation and servo applications.
Frame Sizes
60/80/90/120
Reduction Ratios
L1: 3-10 | L2: 12-100
Backlash
≤3 arc-min (P1)
Output
Hollow Shaft
Need a Quote?
Send InquiryKey Features
Why choose Yongyao PFK Planetary Gearboxes
Helical Gear Design
High-quality alloy steel helical gears for smooth meshing, low vibration, and noise levels below 60dB. Precision class P1 (≤3 arcmin).
Hollow Shaft Output
Standard hollow shaft output with square flange mounting, ensuring stable torque transmission and easy installation.
Long Life & Maintenance-Free
Lifetime lubrication with high-performance grease, IP65 protection class, fully sealed structure. Service life up to 20,000 hours.
Multiple Size & Ratio Options
Available in 4 frame sizes: 60/80/90/120, with single-stage (L1, 3-10) and two-stage (L2, 12-100) reduction options.
High Torque & Efficiency
Optimized planetary carrier design, rated torque up to 155 N·m, with 2x overload capacity. Efficiency ≥97% (L1), ≥94% (L2).
Wide Applications
Suitable for machine tools, industrial robots, automated assembly lines, packaging machinery, printing equipment.
Technical Specifications
Complete dimensional and performance data
| Model | Motor Flange | Spigot B1 |
Input T1 |
Output T2 |
L1 Len |
L2 Len |
Rated Torque |
Peak Torque |
Weight |
|---|---|---|---|---|---|---|---|---|---|
| PFK60 | 8/11 | 60 | 11/14 | 20 | 79 | 97 | 22 N·m | 44 N·m | 2.2 kg |
| PFK80 | 12/14/19 | 85 | 19/22 | 28 | 105 | 128 | 96 N·m | 192 N·m | 5.8 kg |
| PFK90 | 12/14/19 | 85 | 19/22 | 28 | 105 | 128 | 96 N·m | 192 N·m | 5.8 kg |
| PFK120 | 19/22/24/28 | 120 | 24/28/32 | 40 | 141 | 172 | 155 N·m | 310 N·m | 12.5 kg |
Model Number Guide
Understanding PFK Series model numbers
Example
PFK 60 - L1 - 10 - S2 - P1
Frame Size
60 / 80 / 90 / 120
Stage
L1 = Single-stage | L2 = Two-stage
Reduction Ratio
L1: 3-10 | L2: 12-100
Output Type
S1 = Smooth Hollow | S2 = Keyed Hollow
Accuracy Class
P1 = ≤3 arcmin | P2 = ≤5 arcmin
Industry Applications
Widely used in demanding automation applications worldwide
Industrial Robots
Robot joints, articulated arms, COBOTS
Machine Tools
CNC axis drives, rotary tables
Automation
Assembly lines, packaging, handling
Automotive Manufacturing
Production lines, precision assembly
Why Choose Yongyao
Your trusted partner for precision transmission solutions
ISO 9001 Certified
Quality management system ensuring consistent precision and reliability in every unit.
CMM Inspection
Every gearbox batch inspected with coordinate measuring machine. Full test reports available.
Fast Delivery
Standard 15 days delivery. Express production available for urgent requirements.
Competitive Pricing
Direct from manufacturer. No middlemen. Flexible pricing for OEM/ODM orders.
Related Products
Explore our complete precision transmission product range
