OnRobot RG2 Alternative: EPG2-100-50 Long-Stroke Electric Gripper
Short answer: If you need an alternative to the OnRobot RG2, the closest Grippersupply option is the EPG2-100-50: 100 mm stroke, 15–50 N rated gripping force and a 2 kg recommended payload, with Modbus RTU (RS485) and I/O control. This page is for integrators and engineers who want a second source for RG2-type pick-and-place and machine-tending jobs.
The OnRobot RG2 is a well-known flexible two-finger electric gripper for collaborative robots. We list only published values. OnRobot numbers come from the official RG2 product page (https://onrobot.com/en/products/rg2-finger-gripper) and the RG2 datasheet v1.8 (https://onrobot.com/storage/datasheets/rg2/datasheet_rg2_v1.8_en.pdf). Our numbers come from our product catalog (V1.4).
Which Grippersupply model fits an RG2 job?
| Your RG2 application | Closest Grippersupply option | Why |
|---|---|---|
| Changing part sizes, long travel needed | EPG2-100-50 | 100 mm stroke (RG2: 110 mm) and a 2 kg recommended payload |
| Only if your opening needs 50 mm or less AND you want IP54 or higher force | EPGC-50-150 | Collaborative-type, IP54, 40–150 N, 3 kg payload. Not a stroke match: 50 mm only, and its 40 N minimum is too high for delicate parts |
The EPG2-100-50 is our main RG2 alternative. It is not a copy and does not match the RG2 on every spec. Check stroke, force, mounting and your robot flange before you switch.
Comparison table
| Spec | OnRobot RG2 ¹ | Grippersupply EPG2-100-50 | Grippersupply EPGC-50-150 |
|---|---|---|---|
| Stroke | 0–110 mm total (adjustable) | 100 mm (adjustable) | 50 mm (adjustable) |
| Gripping force (per manufacturer spec) | 3–40 N (adjustable), deviation ±25% | Rated gripping force 15–50 N (adjustable), ±10% | Rated gripping force 40–150 N (adjustable), ±10% |
| Payload | 2 kg force fit / 5 kg form fit | 2 kg recommended | 3 kg recommended |
| Repeatability | 0.1 mm typical, 0.2 mm max | ±0.1 mm | ±0.02 mm |
| Speed / time | 38–127 mm/s; gripping time 0.06–0.21 s (8 mm movement) | 0.7 s (single-stroke) | 0.5 s (single-stroke) |
| Weight | 0.78 kg | 1 kg | 1 kg |
| Size | 213 × 149 × 36 mm | 75 × 156 × 196 mm open / 75 × 86 × 208 mm closed | 75 × 75 × 102 mm (without fingers) |
| Control / integration | Integrated software in the robot program, automatic TCP and payload calculation (product page); bus type not stated | Modbus RTU (RS485), I/O | Modbus RTU (RS485), I/O (NPN) |
| Supply voltage | 20–25 V (24 V typical) | DC 24 V ±10% | DC 24 V ±10% |
| IP class | IP54 | IP40 | IP54 |
¹ Source: OnRobot RG2 datasheet v1.8, https://onrobot.com/storage/datasheets/rg2/datasheet_rg2_v1.8_en.pdf (p.2 general properties, p.3 operating conditions); grip detection from https://onrobot.com/en/products/rg2-finger-gripper.
About force values: OnRobot lists “Gripping force (adjustable) 3–40 N”. We list a rated gripping force. The figures are stated differently, so they are not directly comparable. Ask us if your job runs close to the limit.
About speed: OnRobot’s gripping time is based on 8 mm of finger movement. Our times are for a single full stroke (open or close). They are not directly comparable.
Where the RG2 is stronger
- Longest travel: 110 mm stroke, slightly more than the EPG2-100-50 and more than double the EPGC-50-150.
- Lighter tool: 0.78 kg vs 1 kg for both of our models.
- Robot-side integration: OnRobot offers integrated software in the robot program, automatic TCP and payload calculation, grip detection and width measurement. We do not offer an equivalent.
- Gentle gripping: Minimum force of 3 N (EPG2-100-50 starts at 15 N rated gripping force).
- Form-fit payload: Up to 5 kg form-fit (our EPG2-100-50: 2 kg recommended), plus official fingertip accessories.
- IP54 vs IP40 on the EPG2-100-50.
Where we are a practical alternative
- Similar travel class: The EPG2-100-50 gives 100 mm stroke with a 2 kg recommended payload.
- If 50 mm is enough: The EPGC-50-150 offers 40–150 N rated gripping force, 3 kg payload and IP54.
- Fingers: You make the fingers to suit your own part; we can provide mounting dimensions.
- Simple control: Modbus RTU (RS485) and I/O connect directly to most PLCs and robot controllers.
- Buying terms: MOQ 1 piece, Lead time confirmed on quote, 12-month warranty, CAD on request.
Selection guide
- Stroke: Largest part width minus smallest part width, plus clearance. Above 50 mm → EPG2-100-50.
- Short opening only: If your opening needs 50 mm or less and you want IP54 or more force, consider the EPGC-50-150.
- Fingers: Design fingers for your part; ask us for the mounting dimensions.
- Mounting: Tell us your robot model; ask us for the mounting dimensions and CAD.
FAQ
What is the best OnRobot RG2 alternative from Grippersupply?
The EPG2-100-50. It has a 100 mm stroke, a rated gripping force of 15–50 N and a 2 kg recommended payload. The RG2 lists 110 mm, 3–40 N and 2 kg force-fit payload.
Is the EPG2-100-50 a drop-in replacement for the RG2?
No. Size, weight, mounting and control interface differ. Check the CAD file and your robot flange before you swap.
Can I compare the force numbers directly?
No. OnRobot lists an adjustable gripping force of 3–40 N. We list a rated gripping force, so the figures are not directly comparable.
When should I consider the EPGC-50-150 instead?
Only if your opening needs 50 mm or less and you want IP54 or higher force. It is IP54 with 40–150 N rated gripping force and 3 kg payload, but its stroke is 50 mm, much shorter than the RG2.
What control interface do your grippers use?
Modbus RTU (RS485) and I/O.
What is the minimum order quantity and lead time?
MOQ is 1 piece. Lead time confirmed on quote. Every gripper has a 12-month warranty.
Do you provide certificates and CAD files?
Certificates available on request. CAD files are also available on request.
How do I get a quote?
Message us on WhatsApp at +86 130 4977 0422 (https://wa.me/8613049770422) or email jimmy@grippersupply.com with your part size and weight, stroke and robot model.
Get a quote
Get a quote on WhatsApp · Request a Quote · jimmy@grippersupply.com
MOQ 1 piece · Fast quote within 24h · Lead time confirmed on quote · 12-month warranty
Related: Robotiq alternative