Description

QDK Series: Horizontal Rotary Clamp Cylinder

High-Stability Precision Clamping with Zero Rotation Stroke

The QDK Series is a high-performance horizontal rotary clamp cylinder designed for advanced automation and industrial fixtures. Unlike traditional rotary cylinders, this series features a horizontal rotary construction where the complete rotation occurs on a horizontal plane, ensuring that the rotation stroke is zero and significantly saving vertical space.

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Key Technical Advantages

Enhanced Stability: Engineered with double pins in the rotation guide groove to minimize vibration and increase operational stability during high-frequency cycles.
Space-Saving Design: Its horizontal rotation path allows for a more compact footprint compared to vertical-swing series, making it ideal for low-clearance environments.
Flexible Mounting: Available in two distinct front-end cap configurations—Boss type and Flush type—to accommodate various installation requirements.
Integrated Sensing: The cylinder body is equipped with magnetic switch slots on multiple sides for the easy installation of induction sensors.
Customizable Rotation: Supports both Levorotatory (QDKL)—anticlockwise swivel—and Dextrorotatory (QDKR)—clockwise swivel—directions with a standard rotation angle of 90°.

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Technical Specifications

Feature	Specification Details	Source
Bore Sizes (mm)	20, 25, 32, 40
Acting Type	Double Acting
Fluid	Filtered Air (40μm filter element required)
Operating Pressure	0.15~~1.0MPa (22~~145psi)
Proof Pressure	1.5MPa (220psi)
Temperature Range	-20°C to 70°C
Rotation Angle	90° (Tolerance: ±3°)
Repeatability	±2°
Clamping Stroke	5 mm
Cushion Type	Bumper
Port Size	M5×0.8 (ø20-ø32); 1/8″ (ø40)

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Cylinder Thrust (Force Data)

The following table provides the theoretical thrust (N) in the Clamping (Inward) direction based on operating pressure:

Bore Size	Rod Size	0.2 MPa	0.4 MPa	0.6 MPa	0.8 MPa
20 mm	12 mm	20.1 N	60.3 N	100.5 N	140.7 N
25 mm	12 mm	55.5 N	131.1 N	206.7 N	282.3 N
32 mm	12 mm	111.2 N	250.4 N	388.6 N	526.8 N
40 mm	16 mm	180.7 N	391.7 N	602.7 N	813.7 N
(Note: Complete force data available for pressures ranging from 0.1 to 0.8 MPa).

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Premium Material Composition

Built for durability, the major components are constructed from high-grade industrial materials:

Cylinder Body: High-strength Aluminum Alloy.
Piston Rod: Scr440 Steel for high tensile strength.
Rotary Axis: Scr440 Steel.
Seals & O-rings: NBR (Nitrile Butadiene Rubber).
Bumper: TPU (Thermoplastic Polyurethane).
Magnet: Sintered metal (Neodymium-iron-boron).

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Selection & Application Guidelines

Arm Length and Pressure: When designing custom clamp arms, ensure the length and operating pressure remain within the allowable bending moment graph to prevent damage to the piston rod.
Inertia Management: If long or heavy arms are utilized, the cylinder speed must be reduced according to the Moment of Inertia chart to protect internal components.
Speed Control: To maximize the lifespan of the cylinder and the jig, it is mandatory to use flow control valves to regulate the swivel and clamping speed.
Air Quality: Clean air is essential; ensure a 40μm filter is used and the piping is purged of debris before connection.
Assembly Safety: When installing or removing a rocker arm, always secure the arm with a spanner while using an Allen wrench to tighten the bolt; never hold the cylinder body during this process to avoid internal damage