Product Description
The Welker UB4N025A010DER1A000 is a UB4 Series Gold Line Unibody Shot Pin featuring a double-acting pneumatic guided cylinder with an integrated anti-rotate ram and aluminum body with steel ram. Designed for precision locating applications including retractable locating pins, part stops, probe slides, straight clamps, and wedge locks, this unit offers NAAMS-standard mounting and requires no lubrication. This configuration includes a 25mm stroke, 70mm bore, RAP coupler, single-rod NPT pneumatic actuator, 4-hole large ram style, Balluff PNP quick-disconnect cylinder switch, steel shroud, and P1 port position.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Welker Engineered Products |
| Model / Part Number | UB4N025A010DER1A000 |
| Series | UB4 Gold Line Shot Pin |
| Product Type | Pneumatic Shot Pin Cylinder (Unibody) |
| Cylinder Action | Double Acting |
| Cylinder Type | Guided Cylinder |
| Suitable Media | Air |
| Bore Diameter | 70 mm |
| Body Material | Aluminum Body, Steel Ram |
| Stroke | 25 mm |
| Coupler Type | RAP (shortens nominal cylinder stroke by 2mm) |
| Actuator Type | Pneumatic, Single Rod, NPT Port |
| Options | None (no detent, no purge port) |
| Ram Style | 4-Hole Large (8mm Dowels, 11mm Holes) |
| Ram Size | 40mm Square |
| Switch Option | ER — Balluff BES-Z02KR2-PSC20F-P100-S04-V, 3-Wire, 4-Pin, DC M12×1 (PNP), Quick Disconnect |
| Switch Type | Solid State Cylinder Switch (Weld Field Immune) |
| Shroud | Yes — Steel Safety Orange Shroud |
| Port Position | P1 |
| Minimum Operating Pressure | 80 PSI (5.5 bar) |
| Maximum Operating Pressure | 150 PSI (10.3 bar) |
| Repeatability | ±0.05mm (±0.002") part-to-part |
| Max Deflection | ±0.005" at end of ram |
| Stroke Accuracy | ±0.38mm (±0.015") |
| Wear Rating | Max 0.002" at 3 million cycles |
| Mounting Standard | NAAMS Standard |
| Lubrication Required | None (maintenance-free) |
| Ram Bearing | Full Contact Filled PTFE Liner |
| Ram Coating | Wear Resistant Coating |
| Weld Spray Resistance | Yes — corrosion and weld spatter resistant ram; shrouded |
| Approximate Unit Weight (25mm Stroke, Steel Ram) | ~18 lbs |
| Applications | Retractable locating pin, part stop, probe slide, straight clamp, wedge lock |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
GTIN 679523686161
Country/Region of Manufacture United States
Max. PSI See Welker UB4 catalog for max operating pressure
Manufacturer Welker
Part Number UB4N025A010DER1A000
Series UB4 Gold Line Shot Pin
Shelf B-19
Stroke ±0.015" (0.38mm)
Bore Diameter 70 mm
Model UB4N025A010DER1A000
Port Size NPT
MPN UB4N025A010DER1A000
Type Pneumatic Cylinder
