YLK Servo Electric Cylinder Model Naming Rules
Want to read an electric cylinder model at a glance? This page explains the complete YLK model structure: which part of the code stands for cylinder type, stroke, screw lead, inline or reverse-parallel mounting, motor interface and motor power, together with real examples and a selection table.
YLK94-200C10ZKB-X10-M1.5
MODEL STRUCTURE
The model consists of seven segments
From left to right: series → cylinder type → stroke → screw lead → mounting style → motor interface → motor power.
Series YLK
Series code for Youlke YLK servo electric cylinders — modular linear actuators that integrate a servo motor with a precision screw.
Cylinder type 94
Body size code, commonly 40, 50, 60, 80, 94, 110, 134, 142 and 175. Larger types handle higher thrust and longer strokes.
Stroke 200
Effective stroke in millimetres. For example, 100 means a 100mm stroke and 200 means 200mm, chosen from your mechanism travel.
Screw lead C10
Screw lead codes: C02 = 2mm, C05 = 5mm, C10 = 10mm, C20 = 20mm, C32 = 32mm. A larger lead gives higher speed, a smaller lead gives higher thrust.
Mounting style ZKB
The first letter Z means inline and S means reverse-parallel. The following letters indicate front flange, side flange, rear flange, guide rod or clevis — see the code table below.
Motor interface X10
Motor flange and interface size code, such as X1, X10, X12 or X16, used to match servo or stepper motors with the corresponding flange size.
Motor power M1.5
Motor power codes: M0.1 = 100W, M0.4 = 400W, M0.75 = 750W, M1.5 = 1.5kW and M3.0 = 3kW, selected according to speed and thrust needs.
Note: the above is the general naming rule for standard YLK models and is intended to help you read model codes quickly. Special strokes, special mounting, protection levels and sensor configurations are subject to technical confirmation and the final contract.
MOUNTING CODES
Drive and mounting style codes
Codes starting with Z are inline (motor and screw on the same axis); codes starting with S are reverse-parallel (timing belt drive, shorter overall length).
| Code | Drive Type | Mounting / Rod End | Notes |
|---|---|---|---|
| ZKA | Inline | Front flange | Compact, front mounting |
| ZKB | Inline | Side flange | Side mounting in tight spaces |
| ZKD | Inline | Guide rod | Guided, resists offset load and torque |
| SKA | Reverse-parallel | Front flange | Short overall length for long strokes |
| SKB | Reverse-parallel | Side flange | Reverse-parallel with side mounting |
| SKH | Reverse-parallel | Rear flange | Motor at rear, rear mounting |
| SKD | Reverse-parallel | Guide rod | Reverse-parallel with guide, resists offset load |
| SQC | Reverse-parallel | Front clevis, rear single ear | Pivot mounting with angular freedom |
| SNA | Reverse-parallel | Front flange, internal thread | Internal thread rod end |
TYPE COMPARISON
Cylinder types, thrust and stroke range
Determine the cylinder type from required thrust and stroke, then refine the selection with screw lead and motor power.
| Cylinder Type | Thrust (KG) | Stroke Range (MM) | Screw Diameter (MM) | Rod Diameter (MM) | Output Thread |
|---|---|---|---|---|---|
| YLK40 | 45 | 0-300 | 8 | 18 | M10×1.5 |
| YLK50 | 80 | 0-500 | 12 | 25 | M12×1.5 |
| YLK60 | 500 | 0-1200 | 16 | 35 | M20×1.5 |
| YLK80 | 1500 | 0-1500 | 25 | 50 | M30×2.0 |
| YLK94 | 2000 | 0-2000 | 32 | 60 | M30×2.0 |
| YLK110 | 4000 | 0-2500 | 40 | 75 | Custom |
| YLK134 | 5500 | 0-2500 | 50 | 90 | Custom |
| YLK142 | 10000 | 0-2500 | 50 | 90 | Custom |
| YLK175 | 20000 | 0-2500 | 63 | 110 | Custom |
EXAMPLES
How to read common model numbers
| Model Number | Reading |
|---|---|
| YLK40-100C02ZKB-X1-M0.1 | Type 40, 100mm stroke, 2mm lead, inline side flange, 100W motor |
| YLK50-100C05SKA-X1-M0.4 | Type 50, 100mm stroke, 5mm lead, reverse-parallel front flange, 400W motor |
| YLK60-100C05ZKD-X1-M0.75 | Type 60, 100mm stroke, 5mm lead, inline guide rod, 750W motor |
| YLK80-100C10SKA-X10-M0.75 | Type 80, 100mm stroke, 10mm lead, reverse-parallel front flange, 750W motor |
| YLK94-200C10ZKB-X10-M1.5 | Type 94, 200mm stroke, 10mm lead, inline side flange, 1.5kW motor |
| YLK110-200C10SNA-X10-M1.5 | Type 110, 200mm stroke, 10mm lead, reverse-parallel front flange with internal thread, 1.5kW motor |
| YLK134-200C10ZKA-X12-M3.0 | Type 134, 200mm stroke, 10mm lead, inline front flange, 3kW motor |
FAQ
Questions about model naming rules
What do the digits in a YLK electric cylinder model mean?
Take YLK94-200C10ZKB-X10-M1.5: YLK is the series, 94 is the cylinder type, 200 is the stroke in mm, C10 is a 10mm screw lead, ZKB is inline with side flange, X10 is the motor interface size and M1.5 is a 1.5kW motor.
How do I choose the right cylinder type?
Start from required thrust and stroke: YLK40 approx. 45kg, YLK50 approx. 80kg, YLK60 approx. 500kg, YLK80 approx. 1500kg, YLK94 approx. 2000kg, YLK110 approx. 4000kg, YLK134 approx. 5500kg, YLK142 approx. 10000kg and YLK175 approx. 20000kg, subject to final engineering confirmation.
What is the difference between inline and reverse-parallel cylinders?
Inline versions connect the motor and screw on the same axis for compact width and high integration; reverse-parallel versions use a timing belt drive so the overall length is shorter, ideal for limited installation space.
How do screw leads C02, C05 and C10 affect speed and thrust?
A larger lead gives higher linear speed at the same motor speed with lower thrust, while a smaller lead provides higher thrust at lower speed. Choose the lead based on cycle time and load.
Can mounting styles outside the standard codes be customized?
Yes. Beyond standard front, rear and side flanges, guide rods, clevises and trunnions, we can customize internal threads, special mounting, protection levels and sensors. Please confirm with our sales engineers.
Not sure which model to choose?
Tell us thrust, stroke, speed and installation space, and our engineers will help you complete the selection with a full model number.