USED WELKER UB4N050A010DER1D000

The Welker UB4N050A010DER1D000 is a UB4 Series Gold Line Unibody Shot Pin — a pneumatic actuator featuring an integrated anti-rotate square ram widely used in automotive and industrial automation fixtures. It features an aluminum body with a steel ram, a 50mm stroke, 70mm bore, RAP coupler, double-acting single-rod NPT pneumatic actuator, large 4-hole ram (D style), a Pepperl & Fuchs NBN2-F581-100S6-E8-V1 PNP proximity switch monitoring the Retract position, a steel safety orange shroud, and P4 port position. Welker UB4 Shot Pins are NAAMS compatible, require no lubrication, and are resistant to corrosion and weld spatter.
Specification
Value
Brand
Welker Engineered Products
Model / Part Number
UB4N050A010DER1D000
Series
UB4 Gold Line Unibody Shot Pin
Product Type
Pneumatic Shot Pin / Retractable Locating Pin
Body Material
Aluminum Body, Steel Ram
Stroke
50 mm
Coupler Type
RAP (shortens nominal cylinder stroke by 2mm)
Actuator Type
Pneumatic Single Rod, NPT Port
Options
None (no purge port, no detent)
Ram Style
D — Large 4-Hole (8mm Dowels / 11mm Holes)
Ram Size
40mm Square Ram
Switch / Sensor Option
ER — Pepperl & Fuchs NBN2-F581-100S6-E8-V1, 4-Wire, 4-Pin, DC M12×1 (PNP), Retract Position
Switch Output Type
PNP (Sourcing)
Switch Connector
M12 × 1, 4-Pin Male Quick Disconnect
Switch Monitored Position
Retract (R)
Shroud
Yes — Safety Orange Steel Shroud (Standard)
Port Position
P4
Recommended Operating Pressure
60–80 PSI (flow controls not required)
Pneumatic Port Size
1/4" NPT
Push Area
5.97 sq. in. (40mm bore)
Pull Area
3.49 sq. in. (single rod)
Repeatability
±0.05mm (±0.002") part-to-part
Stroke Accuracy
±0.38mm (±0.015")
Max Deflection at Ram End
±0.13mm (±0.005") up to 75mm stroke
Lubrication
Not Required
NAAMS Compatible
Yes
Mounting Standard
NAAMS L-Block pattern, 15mm spacing, 6× M10×1.5 bolts (torque 40–45 Nm)
Approximate Weight (01 Actuator, Steel Ram, 50mm Stroke)
~18.5 lbs
Applications
Retractable Locating Pin, Straight Acting Clamp, Part Stop, Probe Slide, Wedge Lock
ISO Certification
ISO 9001 Registered
We warranty all items for 30 days from date of purchase.