USED WELKER UB4N025A010DER1D000

The Welker UB4N025A010DER1D000 is a UB4 Series Gold Line Unibody Shot Pin pneumatic cylinder featuring a 40mm square anti-rotate ram with a 25mm stroke and RAP (Rapid Action Pull) coupler. It integrates a double-acting single-rod pneumatic cylinder with NPT ports, a 4-hole large ram style, an ER-type world switch (retract position), a steel shroud for weld spatter protection, and P4 port position. This unit is designed for use as a retractable locating pin, part stop, probe slide, wedge lock, or straight acting clamp in precision automation and welding fixture applications, and is fully NAAMS compatible with no lubrication required.
Specification
Value
Brand
Welker Engineered Products
Model / Part Number
UB4N025A010DER1D000
Series
UB4 Gold Line
Product Type
Unibody Shot Pin Pneumatic Cylinder
Body Material
Aluminum Body, Steel RAM
Stroke Length
25mm
Coupler Type
RAP – Shortens nominal cylinder stroke by 2mm
Actuator Type
Pneumatic – Single Rod – NPT Ports
Options
None (standard)
RAM Style
4-Hole Large (8.0mm Thru / 11.0mm Thru)
Switch Option
ER – World Switch (Retract Position)
Shroud
1 – Steel Shroud (Safety Orange)
Port Position
P4
RAM Size (Nominal)
40mm Square
Pneumatic Bore
70mm
Port Size
1/4" NPT
Recommended Operating Pressure
60–80 PSI (4.1–5.5 bar), flow controls not required
Minimum Operating Pressure
80 PSI (5.5 bar)
Push Force (Sq. In.)
5.97 sq. in.
Pull Force (Sq. In.)
3.49 sq. in.
Repeatability
±0.05mm (±.002") part-to-part
Maximum Deflection at End of RAM
±.005" (±0.13mm)
Stroke Accuracy
±.015" (±0.38mm)
RAM Mounting Pattern
NAAMS L-Block pattern, 15mm spacing
Maximum Wear at 3M Cycles
.002" (0.05mm)
Lubrication Required
None
NAAMS Compatible
Yes
Wiper Material
Moly-impregnated urethane (custom molded)
Applications
Retractable locating pin, part stop, probe slide, wedge lock, straight acting clamp
We warranty all items for 30 days from date of purchase.