OnRobot Universal Robots Screwdriver

OnRobot Multifunctional Robot Screwdriver with Screw Feeder (103961), M1.6–M6, 0.15–5 Nm, UR+ Certified

OnRobot
SKU:
103961
$9,915.18
Condition:
New
Current Stock:
Description
 

Automation Distribution  ·  OnRobot  ·  End-of-Arm Tooling

OnRobot Multifunctional Robot Screwdriver

Intelligent automated screwdriving with precise torque, built-in error detection, and embedded Z-axis motion. Ready to deploy on Universal Robots and all leading cobot brands.

M1.6 – M6 Screw Range 0.15 – 5 Nm Torque Up to 50 mm Screw Length IP54 Rated ESD Safe 30,000 Hr Service Life UR+ Certified
Item No. 103961

What Is the OnRobot Screwdriver?

The OnRobot Multifunctional Robot Screwdriver is a purpose-built end-of-arm tool for collaborative and light industrial robots that eliminates the integration complexity of traditional automated fastening systems. It configures directly through the robot's user interface, with no separate HMI, no external motion controller, and no added integration cost.

Item No. 103961 is the screwdriver tool unit. The matching screw feeder and accessory kit are ordered separately, so you can spec the feeder to the dominant screw size in your application. See the Screw Feeder Options section below for the two feeder variants.

The embedded active Z-axis is the key differentiator: the screwdriver handles its own vertical insertion motion independently from the robot arm. The robot positions, the tool drives. This simplifies programming dramatically and improves insertion consistency across the entire production run.

Compatible with Universal Robots (UR+ certified), ABB, Doosan, Fanuc, Yaskawa, and other leading cobot brands through OnRobot's One System platform. If you are running a UR cobot, setup and programming happen entirely within PolyScope, where the screwdriver parameters appear as native URCap nodes.

Key Features

Embedded Z-Axis

Insertion Without Robot Movement

The active Z-axis drives screw insertion and retraction internally. The robot arm holds position while the tool handles the vertical stroke, up to 55 mm of shank travel.

Precision Torque Control

0.15 – 5 Nm with ±3% Accuracy

Dual-motor BLDC system delivers consistent torque across the full range. Accuracy is ±0.04 Nm below 1.33 Nm and ±3% above, documented per the datasheet torque and angle curve.

Intelligent Error Detection

Three Active Screw Checks Per Cycle

The tool actively verifies (1) screw picked, (2) correct screw length, and (3) proper insertion and seating. Misses and cross-threads are caught before the robot moves to the next position.

Collaborative Safety

Screw Retraction + Protective Force Stop

Screws up to 35 mm retract fully inside the tool during robot transit, leaving no exposed tip. The protective feature activates at 35–45 N axial force, and LED alert lights indicate fault state immediately.

Fast Changeovers

Different Screw Type in Minutes

The Screw-bit System (bit, screw carrier, screw fix, and bit holder) swaps in minutes. Supports metric (M1.6–M6), US standard (#1–1/4"), and self-tapping for aluminum and plastic, across DIN, ISO, and ASME standards.

Out-of-Box Deployment

One System Setup, Any Leading Robot

Mount to the robot arm, install the appropriate Screw-bit System, then enter screw length and target torque in the robot UI. Programming uses freedrive teach and native waypoint saving, with no robotics expertise required.

Technical Specifications

Screwdriver Performance
Physical & Electrical
Tightening Torque Range 0.15 – 5 Nm  (0.11 – 3.68 lbft)
Weight 2.5 kg  (5.51 lb)
Torque Accuracy (≤ 1.33 Nm) ±0.04 Nm  (±0.03 lbft)
Dimensions (L × W × H) 308 × 86 × 114 mm  (12.1 × 3.4 × 4.5 in)
Torque Accuracy (> 1.33 Nm) ±3%
Power Supply 20 – 25 V DC  (typ. 24 V)
Output Speed 340 RPM (max)
Current Consumption 75 mA idle  /  4,500 mA peak
Screw Length Range Up to 50 mm  (35 mm thread length)
IP Classification IP54
Screw Length Within Full Collaborative Safety Up to 35 mm  (fully retracted in transit)
ESD Safe Yes
Shank Stroke (Z-Axis Travel) 55 mm  (2.16 in)
Motor Dual integrated electric BLDC
Shank Preload (Adjustable) 0 – 25 N  (typ. 10 N)
Calculated Operation Life 30,000 hours
Protective Feature Force 35 – 45 N axial
Operating Temperature 5 – 50 °C  (41 – 122 °F)

Supported Screw Standards

Metric Screws

Thread Sizes: M1.6 – M6

Material: Magnetic

Head Types: Cylinder (DIN 912, ISO 4762, ISO 14579, ISO 14580), Counter Sunk (ISO 14581), Button Head (DIN 7985A)

Max length: 50 mm (35 mm thread)

US Standard Screws

Thread Sizes: #1 – #10, 1/4"

Material: Magnetic

Head Types: Cylinder (ASME B18.3), Button Head (ASME B18.6.3), Counter Sunk (ASME B18.6.3)

Max length: 1.96 in (1.37 in thread)

Self-Tapping: Aluminum

ST2.2 / ST2.9 / ST3.5 – ST6.3

Standards: DIN 7981C/F, WN 5251, DIN 7983C, DIN 7500M, DIN 14586C, DIN 7982C

Head Types: Pan, Flat Round w/ Flange, Lens, Counter Sunk

Self-Tapping: Plastic

K20 / KB22 – KB50 / M2 – M6

Standards: ISO 4042, WN 1411, WN 5451

Head Types: Counter Sunk, Flat Round with Flange

Bit Compatibility Note

All standard 1/4" HEX bits, 25 mm length. Two bit holder types: Holder A (higher magnetic force, larger/heavier screws M3–M6) and Holder B (lower magnetic force, smaller/lighter screws M1.6–M2.5). Do not use Holder A with small screws, because excess magnetic pull can cause screw migration from feeder to tool.

Screw Feeder Options

The OnRobot Screwdriver (Item No. 103961) is the tool unit. For fully automated screw presentation, add a dedicated screw feeder, ordered separately. Two feeder variants are available, so select based on your primary screw size range.

Screw Feeder: Small

OnRobot Screw Feeder M1.6

Optimized for small screw sizes. For use with Bit Holder B (low magnetic force).

View Product →

Screw Feeder: Standard

OnRobot Screw Feeder M2 – M6

Full metric range coverage. For use with Bit Holder A or B depending on screw size.

View Product →

Before You Deploy: What Engineers Need to Know

Screwdriver Orientation Requirement

The tool must operate downward or laterally (up to horizontal / 90°). Operating at angles greater than 90° from vertical, meaning pointing upward, will trigger the protective force feature. Plan your robot cell mounting and approach angles accordingly. The Screw-bit System must align within a 0 – 8 mm standoff distance from the work surface.

Compute Box & Quick Changer Compatibility

Requires OnRobot Compute Box revision CB3.4 or later and the 4.5A version of the Single or Dual Quick Changer. If you have an existing OnRobot setup, verify your Compute Box revision before ordering. The Screwdriver cannot be used simultaneously with OnRobot Eyes (insufficient power supply capacity).

UR Cobot Payload Planning

The Screwdriver weighs 2.5 kg. Add the Quick Changer, Compute Box mount, and any cable management. For most UR configurations, a UR10e or UR16e gives comfortable working margin. A UR5e is viable but leaves limited payload headroom for additional accessories. Factor in the screw feeder position relative to the robot's workspace when planning the cell layout.

Tight-Space Access: Bit Extenders Available

50 mm and 100 mm bit extenders (Type A and B) are available to reach recessed or enclosed fastening locations. Extenders include a lock nut to prevent screw carrier drift. Note: maximum total radial runout with extenders mounted is 0.5 mm. Order through Automation Distribution. Part numbers: 109301 (A-50mm), 109289 (B-50mm), 109290 (A-100mm), 109298 (B-100mm).

Target Applications

Electronics Assembly

Small screw automation (M1.6–M3) for PCB enclosures, consumer devices, and EV battery assemblies. ESD-safe construction protects sensitive components.

Automotive Tier 1 & 2

Multi-fastener assembly with fast changeovers across product variants. Torque traceability via the torque gradient variable logged per cycle in the robot program.

Medical Device Manufacturing

Documented insertion torque and active error detection per cycle support traceability requirements for regulated assemblies.

General Light Industrial Assembly

Any repetitive fastening operation where inconsistent manual torque, RSI risk, or cycle time variability is a production concern.

Frequently Asked Questions

What screw sizes does the OnRobot Screwdriver support?

Metric M1.6 through M6, US Standard #1 through 1/4", and self-tapping screws for aluminum and plastic up to ST 6.3. All screws must be magnetic material. Maximum screw length is 50 mm (35 mm thread length). See the Supported Screws section above for the full standard-by-standard breakdown.

Is the OnRobot Screwdriver compatible with Universal Robots cobots?

Yes. It is UR+ certified and integrates natively with PolyScope via URCap. Screw length and torque parameters are entered directly in the robot UI. It is also compatible with ABB, Doosan, Fanuc, and Yaskawa robots through OnRobot's One System platform.

Does the OnRobot Screwdriver include a screw feeder?

Item No. 103961 is the screwdriver tool unit. Screw feeders are ordered separately. The Screw Feeder M1.6 and Screw Feeder M2–M6 are both available at Automation Distribution. Select your feeder based on the dominant screw size in your application.

Can the OnRobot Screwdriver be used in a collaborative application without safety guarding?

Yes, for screws up to 35 mm in length. Screws of that size retract fully inside the tool during transit, eliminating exposed sharp tips. The protective force stop activates automatically at 35–45 N axial load, and LED status indicators alert operators to any fault condition. For screws 35–50 mm, a risk assessment is recommended as full retraction does not apply.

What Compute Box revision is required?

OnRobot Compute Box revision CB3.4 or later. The Screwdriver also requires the 4.5A version of the Single or Dual Quick Changer. Contact Automation Distribution if you need help verifying your existing OnRobot hardware revision before ordering.

Where can I buy the OnRobot Screwdriver and accessories?

Automation Distribution is an authorized OnRobot distributor. The OnRobot Multifunctional Robot Screwdriver, screw feeders, spare parts kits, and bit extenders are available online or through our team in Hatfield, PA.

 

Authorized OnRobot Distributor  ·  Hatfield, PA

Ready to Automate Your Fastening Process?

Automation Distribution supplies the full OnRobot Screwdriver ecosystem: tool, feeders, accessory kits, and bit extenders. Our team can help you select the right configuration for your application.