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DIY Acrylic Robot Manipulator Mechanical Arm / Gripper Clamp Kit (for SG90 Servo)

Robotic Arm

DIY Acrylic Robot Manipulator Mechanical Arm / Gripper Clamp Kit (for SG90 Servo)

Laser-cut acrylic robotic gripper/claw mechanism that mounts an SG90 micro servo; most affordable hands-on intro to robotic-arm building (servo sold separately).

₹349 + 18% GST

SKU: BOTBIT-ROB-08 · Best for: End-effector (gripper) for DIY robotic arms

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Overview

About DIY Acrylic Robot Manipulator Mechanical Arm / Gripper Clamp Kit (for SG90 Servo).

This DIY Acrylic Robotic Gripper is a laser-cut mechanical claw designed to be driven by a single SG90 micro servo. As the servo rotates, the linkage opens and closes the two jaws, giving you a working robotic hand that can pick up and release small, light objects.

It is the cheapest hands-on way to get started with robotic-arm building. The transparent acrylic parts and metal linkage bolt together in minutes, and the mounting slot is cut specifically for the popular 9g SG90 servo, making it a natural first project for students learning about actuators and mechanisms.

In India it is widely used as the end-effector on home-built robotic arms and as a standalone teaching aid for how a servo converts rotary motion into a gripping action. Note that the SG90 servo is normally sold separately, which keeps the base kit extremely affordable.

Key features

Why it stands out.

Laser-cut transparent acrylic gripper/claw mechanism, easy to bolt together

Designed to mount a standard 9g SG90 micro servo (servo usually sold separately)

Servo rotation opens and closes the jaws to grip and release objects

Includes the acrylic plates, linkage arms, screws and hardware to assemble

Cheapest hands-on introduction to robotic-arm and end-effector building

Works as a standalone claw or as the gripper on a larger robotic arm

Specifications

Selection facts.

Material	Laser-cut acrylic with metal linkage/screws
Servo compatibility	SG90 9g micro servo (sold separately)
SG90 torque	Approx. 1.8 kg-cm at 4.8 V
SG90 rotation	Approx. 180 degrees
Servo weight	Approx. 9 g
Actuation	Single-servo open/close jaw gripper
Assembly	Screw-together, no soldering required
Controller	Arduino / any board with a PWM servo output

Applications

Where it is used.

End-effector (gripper) for DIY robotic arms
First robotics build for students learning about servos
Teaching how rotary motion converts to a gripping action
Picking and releasing small light objects in demos
Pairing with Arduino to learn servo PWM control
Low-cost STEM and maker workshop projects

Buying guide

How to choose.

Buy this gripper if you want the lowest-cost possible entry into robotic-arm building, or you need a ready-made claw as the hand for a robot you are designing. It suits absolute beginners, workshop organisers buying in bulk, and makers who just need an end-effector.

When choosing, remember it is only the mechanism: confirm whether an SG90 servo is included in the specific listing, as most sell the acrylic kit alone. If you want more grip force and a metal-gear jaw, step up to an MG996R metal gripper instead.

Pair it with one SG90 micro servo, an Arduino UNO or Nano, and a few jumper wires. A separate 5V supply for the servo is recommended if you plan to drive it continuously.

FAQ

Common questions.

Is the servo included?

Usually no. This kit is the acrylic gripper mechanism only, cut to fit an SG90 micro servo which you buy separately. Always check the specific listing to confirm.

Which servo fits it?

It is designed around the standard 9g SG90 micro servo. Same-size micro servos such as the MG90S also fit the mounting slot if you want metal gears.

How do I control it with Arduino?

Connect the SG90 signal wire to a PWM pin and use the Arduino Servo library. Writing servo angles from roughly closed to open positions makes the jaws grip and release.

How much can it lift?

It is meant for small, light objects. Grip force is limited by the tiny SG90, so keep to lightweight items rather than heavy loads.

Does it need soldering?

No. The acrylic parts and linkage screw together, and the SG90 plugs into your controller with jumper wires, so no soldering is required.

Is it available in India?

Yes. This is a widely stocked generic kit on Indian robotics stores and marketplaces at a very low price point.

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