SZGH S450-B-4 Compact SCARA Robot — 450mm | 5 kg | 4-Axis | ±0.03 mm

The SZGH S450-B-4 is a 4-axis horizontal-joint SCARA robot with a 450 mm arm reach and 5 kg payload capacity. Designed for high-frequency pick-and-place, precision assembly, and 3C electronics sorting, it delivers ±0.03 mm repeatability via absolute-value servo drives, eliminating re-homing after power loss. Its 15 kg compact frame mounts directly on a workbench, making it the most space-efficient model in the SZGH S Series.

Full Specifications

Core Advantages

S-Series Most Compact Footprint — Desktop-Level Installation

At 450 mm arm reach and only 15 kg, the S450-B-4 is the most compact model in the entire SZGH S Series. One engineer can carry and mount it on an existing workbench in under an hour — no crane, no floor anchoring, no civil engineering. Ideal for assembly lines where inter-station clearance is below 500 mm.

Industry-Leading Speed at This Scale — Axis 2: 720°/sec, Z: 800 mm/sec

With Axis 2 rotating at 720°/sec and the Z-axis travelling at 800 mm/sec, the S450-B-4 consistently achieves cycle times of ≤0.85 seconds per pick-and-place — faster than many SCARA robots in the same payload class. This translates directly to higher throughput without increasing the number of robot units.

±0.03 mm Repeatability — Above-Average for SCARA Class

The S450-B-4 holds ±0.03 mm repeatability across its full workspace. This precision is achieved through absolute-value servo drives on all four axes, eliminating cumulative positioning error between cycles. Most competing SCARA robots in the sub-5 kg class specify only ±0.05 mm or ±0.1 mm.

Absolute Value Servo — Zero Re-Homing After Power Loss

Unlike incremental encoders that require a full homing sequence after every power cycle or e-stop event, the absolute servo system retains position data through power loss. The robot is ready to resume at exact position the moment power is restored — eliminating downtime that compounds over multi-shift operations.

Built-In 6×2 Pneumatic Interface — Plug-In Gripper Ready

The S450-B-4 includes six dual-channel pneumatic tracheal interfaces pre-routed through the arm. Pneumatic grippers, vacuum cups, and rotary actuators connect directly — no external tubing brackets, no custom routing, no additional fitment time. This reduces gripper changeover time and keeps the arm profile clean inside safety enclosures.

Application Scenarios

S Series Model Selection Guide

S Series Comparison Table

Selection guide:

• Choose S450-B-4 if: workstation width ≤ 500 mm, parts are small (< 200 mm), cycle time target ≤ 1 second, or the robot must be repositioned frequently.

• Choose S600-B-4 if: standard pick-and-place over a 500–700 mm work zone, conveyor-to-conveyor transfer, or you want the most broadly compatible model.

• Choose S800-B-4 if: parts exceed 5 kg, conveyor span exceeds 700 mm, or palletising requires a larger horizontal sweep

SCARA vs 6-Axis Robot — Which Is Right for Your Application?

Rule of thumb: If your task can be described as "pick from Point A, move to Point B, place down" within a horizontal plane — SCARA is faster, cheaper, and easier to maintain. Use a 6-axis robot when you need to rotate a workpiece to arbitrary orientations in 3D space.

Customer Case Study

By Fannie Chen, CEO, Shenzhen Guanhong Automation Co., Ltd. (SZGH) | May 2026

One of the cases that stands out most to me for the S450-B-4 came from a Shenzhen-based manufacturer making Bluetooth earphone charging cases — the small plastic lids that snap onto the case. They export almost entirely to Europe and North America, so tolerance and consistency matter enormously.

Their problem was straightforward: they needed 60 pick-and-place cycles per minute — a 1-second cycle — to keep up with the injection moulding output upstream. They had been using pneumatic cylinder actuators, but when they upgraded the lid geometry to a more ergonomic curved profile, the cylinders could no longer adapt. They needed a robot.

When I visited the line, the first thing I noticed was how tight the space was — workbenches packed together, almost no aisle room. The S450-B-4 was exactly the right choice. At 15 kg, their engineer lifted it out of the shipping crate and bolted it to the bench surface in about 20 minutes. No crane hire, no floor modification.

After integration with their vision positioning system, the actual cycle stabilised at 0.85 seconds per pick — faster than the 1-second target, which gave them unexpected buffer capacity. Axis 2 running at 720°/sec was the key: on short-radius sweeps like this, rotational speed matters more than linear reach.

Two things the customer said afterward that I keep coming back to. First: the robot was running stable within two days of unboxing — no extended commissioning, no calibration loops. Second: he had used a well-known Japanese-brand SCARA on a different line for years, and he told me directly that the S450-B-4 held ±0.03 mm just as consistently — in some production windows, the position scatter was actually tighter.

For a factory competing on European export quality standards, that level of confidence in a Chinese-made machine was meaningful to hear.

Control System & Compatibility

The SZGH S450-B-4 is supplied complete with the SZGH dedicated SCARA controller, pre-configured for all four axes. Key features:

Compatible accessories:

• Pneumatic parallel grippers (connects to built-in 6×2 tracheal interface)

• Vacuum suction cup end-effectors

• Machine vision cameras (2D and 3D)

• Conveyor tracking encoder kits

• Custom end-of-arm tooling (EOAT) mounting flange: standard ISO pattern

Certifications & Warranty

Frequently Asked Questions

What is a SCARA robot and how is it different from a 6-axis robot?

SCARA stands for Selective Compliance Assembly Robot Arm. It uses horizontal rotary joints that move in the XY plane plus a vertical Z-axis — 4 axes total. Compared to a 6-axis vertical-joint robot, a SCARA is faster for flat-plane pick-and-place tasks, has a smaller footprint, costs less to purchase, and requires less maintenance. A 6-axis robot is better suited when you need full 3D orientation freedom, such as welding complex surfaces or inserting parts at odd angles.

What applications is a SCARA robot best suited for?

SCARA robots excel in any task that is fundamentally a horizontal-plane motion: pick-and-place sorting, PCB component loading, assembly of small parts, palletising flat layers, labelling, and pharmaceutical vial tray loading. If your process can be described as "grab from here, move sideways, put down there," a SCARA is almost always faster and more cost-effective than a 6-axis alternative.

What is the cycle time of the S450-B-4 in a real pick-and-place application?

In a typical short-reach pick-and-place (e.g., tray-to-conveyor transfer of a 200 g part over a 300 mm sweep), the S450-B-4 achieves cycle times of approximately 0.8–1.0 seconds. In the Shenzhen Bluetooth case study above, the robot stabilised at 0.85 seconds per cycle when paired with a vision positioning system. Actual cycle time depends on payload weight, move distance, acceleration settings, and end-effector mass.

Does the S450-B-4 require re-homing after a power cut or emergency stop?

No. The absolute-value servo encoders on all four axes retain position data through power loss. When power is restored, the robot knows its exact position and can resume production immediately — no homing sequence required. This is a significant advantage in multi-shift operations where unexpected power interruptions would otherwise cause minutes of downtime per event.

Can the S450-B-4 be ceiling-mounted (inverted)?

Yes. The S450-B-4 supports both desktop/table-top mounting and ceiling (inverted) mounting. Ceiling mounting is common in applications where the workspace below the robot must remain clear for conveyors or fixtures. The controller configuration parameter for invert mode is set during installation.

What end-effectors can I use with the S450-B-4?

The S450-B-4 includes a built-in 6×2 tracheal (pneumatic) interface, meaning pneumatic grippers and vacuum cup arrays connect directly to the arm without external tubing brackets. For electric grippers or screwdriver tools, the standard ISO mounting flange and digital I/O lines on the controller are available. SZGH can also advise on compatible third-party end-of-arm tooling.

Is the S450-B-4 suitable for cleanroom or food-contact environments?

The standard S450-B-4 is designed for general industrial environments (IP rating: standard industrial). For pharmaceutical cleanroom or direct food-contact applications, please contact SZGH to discuss IP54-rated enclosure options, food-safe lubricants, and stainless-steel hardware variants. Ambient operating temperature range is 5°C – 45°C.

How does the S450-B-4 compare to Japanese or European SCARA brands on precision?

The S450-B-4 delivers ±0.03 mm repeatability — which matches or exceeds the published specification of many well-known Japanese and European SCARA brands in the same 5 kg payload class (most of which specify ±0.05 mm or ±0.1 mm at this price tier). SZGH backs this with ISO 9001:2015 manufacturing quality control and 100+ registered patents. See the customer case study above for a first-hand comparison from a Shenzhen export manufacturer.

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