Fast Electric Actuator
Product model: KT0805-30L
Product material: 304 stainless steel + copper alloy
Stroke: 30mm (customizable)
Total length: 96.5mm
Push-pull force: 2KG/20N
No-load push-pull speed: 2mm/s
Protection current: 0.2A
Rated voltage: 5V
Noise: ≤50dB
Protection level: IP56
Self-locking force: greater than 10KG/100N
Product introduction
Fast Electric Actuator KT0805-30L measures 8 mm across the tube and 96.5 mm with the rod retracted; at the full 30 mm stroke it extends to 126.5 mm. It pushes and pulls 2 kg at 2 mm/s, draws 0.2 A, and holds its position with a 10 kg self-locking force once the supply is removed. The body and rod are 304 stainless steel and copper alloy, sealed to IP56.
On a desktop 3D printer or laser engraver, this model drives the flap that closes the build chamber between jobs. The flap is a light plate on two short rails. It has to open far enough for the operator to reach the bed, close again before the job starts, and stay closed while the machine is idle or unplugged. The actuator sits inside the casing next to the gantry, where the clearance is set by the frame rather than by the designer.
Product Parameters
| Parameter | Specification |
|---|---|
| Version | L - thrust version, 2 kg at 2 mm/s |
| Stroke (this model) | 30 mm |
| Available strokes | 30 / 50 / 80 / 100 / 120 mm; longer strokes made to order |
| Total length, retracted | 96.5 mm |
| Total length, fully extended | 126.5 mm (96.5 mm + 30 mm stroke, calculated) |
| Push-pull force | 2.0 kg (≈20 N) |
| No-load push-pull speed | 2 mm/s |
| Rated voltage | 5 V DC |
| Protection current | 0.2 A |
| Power at rated figures | About 1 W (5 V × 0.2 A) |
| Self-locking force | 10 kg (≈100 N) with the supply removed |
| Noise | ≤50 dB |
| Protection level | IP56 - dust protected, protected against water jets |
| Body and rod material | 304 stainless steel + copper alloy |
| Outer tube | 8 mm outside diameter |
| Drive | DC motor with a screw drive, rotary to linear |
| End of stroke | External limit protection board outside the tube; automatic stop at both ends, over-current interruption |
| Working duty | 10%; continuous reciprocation is not recommended |
| Connection | Two silicone leads, positive and negative; direction by reversing the polarity |
| Mounting orientation | Horizontal or vertical, with the load guided in line with the rod |
Why It Fits
- 8 mm outer tube. The tube is the part that has to pass between the gantry and the casing wall. At 8 mm it can run behind the frame extrusion without changing the machine's outer dimensions.
- 96.5 mm retracted, 126.5 mm extended. The 30 mm of travel comes out of a body under 100 mm long, so the flap and its actuator share the same 130 mm of depth behind the panel.
- 2 kg against a light flap. A flap plate, its carriage and two rails come to roughly 300 g; the remaining margin absorbs rail friction, a magnetic catch and an uneven pull at one end of the travel.
- 10 kg hold with the power off. The screw holds the flap closed when the machine is idle or unplugged, without current and without a brake.
- 2 mm/s. Full travel takes about 15 s. The flap arrives without impact, which matters when a printed part or a workpiece is standing on the bed near the opening.
- IP56 and 304 stainless. The chamber side of a printer collects dust and resin mist, and the casing is wiped with alcohol. The body has no plating or paint to blister, and the sealed outlet tolerates spray.
- ≤50 dB and 5 V DC at 0.2 A. The unit runs off the controller's 5 V rail and stays below the noise of the fans, so it can be used in an office or a shared workshop.
Peer Comparison
| Attribute | KT0805-30L | PQ12 (100:1) |
|---|---|---|
| Outer tube / body | 8 mm tube, 96.5 mm retracted | Body diameter not published in the datasheet |
| Stroke | 30 mm | 20 mm |
| Rated force | 2 kg (≈20 N) | 20 N at peak efficiency, 50 N maximum |
| Hold with power off | 10 kg (≈100 N) | 35 N back-drive force |
| Ingress protection | IP56 | IP54 |
| Noise | ≤50 dB | 55 dB at 45 cm |
| Supply | 5 V DC, 0.2 A | 6 or 12 V DC, 550 mA stall at 6 V |
| Duty cycle | 10% | 20% |
| Position feedback | None; two leads and an external limit board | Potentiometer or end-of-stroke switches, depending on version |
Two differences matter for a chamber flap. The first is the tube: at 8 mm it passes behind a frame extrusion, and the datasheet of the reference unit does not publish a body diameter to compare against. The second is the hold: 10 kg keeps the flap shut on a machine that is switched off for days, while a 35 N back-drive figure is overcome by hand pressure on the flap.
Model Selection
| Duty | KT0805-30L (this page) | KT0805-120H | KT0905-20H |
|---|---|---|---|
| 30 mm flap, load under 1 kg | ✓ 30 mm travel, 2 kg, 96.5 mm body | ✗ 120 mm stroke exceeds the opening and the depth | △ 20 mm of travel, only if the opening is smaller |
| Deployment of 120 mm, light head or panel | ✗ stroke too short | ✓ 9 mm/s, 300 g | ✗ stroke too short |
| Load above roughly 1 kg | ✓ 2 kg rating | ✗ 300 g rating | ✗ 300 g rating |
| Movement that must finish inside 5 s | ✗ 15 s for the full stroke | ✓ about 13 s for 120 mm | ✓ about 2.2 s for 20 mm |
| Body depth under 100 mm | ✓ 96.5 mm | ✗ 186.5 mm retracted | ✓ 74 mm |
For a duty that sits between two rows - heavy and quick at the same time - this frame is not the answer. The rest of the range is listed under electric actuator.
Company Profile
The range is produced under an ISO9001:2015 quality management system and carries CE and RoHS certification. Certificates are published on the certification page, the equipment used in production and inspection is listed under testing equipment, warranty and service terms are on why choose KABASI, and company background is on the about us page.
Common Questions
Q: Is 2 kg enough force?
A: For a flap of about 300 g on its own rails, yes. The 2 kg is the rating across the stroke, not a peak at the start. It will not compress a thick gasket or free a jammed flap, and the 10 kg figure is a holding force that must not be used to drive anything.
Q: What happens on a power cut?
A: The flap stays where it is. The screw is self-locking at 10 kg, so the rod holds position with no current, no heat and no brake.
Q: What does IP56 cover?
A: Dust and water jets on the body and rod - wipe-down and spray. Not immersion and not steam. The external limit board sits outside the sealed body and has to be fixed in a dry area.
Q: Are end switches or a position sensor needed?
A: No. The supplied external limit board stops the drive at both ends and cuts the current on a jam. The two leads set the direction, and there is no position signal to read.
Q: Can it run faster?
A: Not on this drive. The fast version of the frame runs about 9 mm/s at 300 g. Speed and force are fixed by the motor and the screw, so the choice is a different model, not a setting.
Q: What can be customized?
A: Stroke, thread and lead length. Standard strokes are 30, 50, 80, 100 and 120 mm, longer strokes are made to order, the rod-end thread is cut to match the coupling, and lead length is set at order. Voltage, speed and force stay as the model specification.
Q: What are the order terms?
A: Minimum order 100 pcs; 30% T/T in advance, balance before shipment; 20–30 days after the advance payment is received; neutral white box and carton by default, branded packaging for customers holding a registered trademark against an authorization letter; sea, air or land freight.
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