Metric Size, Steel
Stop Bolts

With Limit Switch
GN 251.2


RoHS Compliant

This line drawing is movable on the page...just click and drag!


Specification
Information

Bolt: Steel, nickel-plated, hardened to HRC45, tensile strength 500 N/mm2, hexagon head
Hexagon nuts: Steel, nickel-plated
End limit switch:
Voltage--5-24 V DC
Switching load--20 mA DC max.
Life expectancy--3 million operations
Temperature range-- -10°C - 80°C (-14°F - 175°F)
Load-- ~1 N
Supply wire:
Diameter--3mm
2 phase, ~2 meters long
Max. tensile load 30 N
Gray for Type S (normally open)
Black for Type O (normally closed)
Protection classification: IP 40

Shipping

GN 252.5 stop bolts are supplied with a hardened round head that serves as a firm end stop. Typically these bolts are installed with a locknut.
When the workpiece contacts the bolt head, an electrical signal is transmitted by means of the limit switch.
By means of the knurled nut, the limit switch can be installed and removed without need for loosening the setting bolt.
Note: If the screw-in thread is grounded, the blue wire has to be connected to the workpiece.

CLICK ON PART NUMBER FOR PRICE (and option to add to cart)
For CAD download instructions, click
HERE
 

Dimensions in:

millimeters
(inches)

Part Number d
Thread
Length
l1
k l2
max.
l3 e A/F
Type S
Normally
Open
Type O
Normally
Closed
6N21CZB/S
Download the CAD
6N21CZB/O
Download the CAD
M6 x 1.0 21
(.83)
4
(.16)
3
(.12)
3.6
(.14)
11.5
(.45)
10
(.39)
8N25CZB/S
Download the CAD
8N25CZB/O
Download the CAD
M8 x 1.25 25
(.98)
7
(.28)
3
(.12)
5
(.20)
15
(.59)
13
(.51)
10N25CZB/S
Download the CAD
10N25CZB/O
Download the CAD
M10 x 1.5 25
(.98)
7
(.28)
4
(.16)
6
(.24)
19.5
(.77)
17
(.67)