Length
Diameter
Length
Thread
Table 5 SAFEKEY Dimensions
Model (in mm) (in inches) Thread Length
Length Diam. Length Diam. mm. inch)
XL26 157 3.175 6.18 0.125 1/4-20 UNC 215 8.46
XL71 217 3.175 8.54 0.125 1/4-20 UNC 215 8.46
XL131 267 3.175 10.51 0.125 1/4-20 UNC 215 8.46
XL186 282 3.175 11.1 0.125 1/4-20 UNC 215 8.46
XL221 317 3.175 12.48 0.125 5/16-18UNC 225 8.86
XL281 367 3.175 14.45 0.125 M10 210 8.27
XL426 377 3.175 14.84 0.125 M8 278 10.94
XL681 437 3.175 17.2 0.125 M12 363 14.29
XL1127 517 3.175 20.35 0.125 M12 416 16.38
XL1372 572 3.175 22.52 0.125 M12 416 16.38
XL2856 707 3.175 27.83 0.125 M20 500 19.69
XL4581 937 4.978 36.89 0.196 M20 600 23.62
Length tolerance : 0 to +5mm / 0” to 0,197”
Diameter tolerance : ±0.05mm / ±0.002”
Figure 7 SAFEKEY Dimensions Figure 8 Retractor Rod Dimensions
Length tolerance : 0 to +1mm / 0” to 0.04”
11 Testing the HYTORK Actuator
Using compressed air at 80-100 psi (5.5 - 7 bar) check the seal
areas with soapy water, ensuring there are no leaks and that the
Pinion rotates smoothly over its full travel.
11.1 Testing and Cycling of Infrequently Used or Stored
Actuators
Actuators not in current use (i.e. Actuators in storage or stock and/
or not operated for at least a 3 month period), should be cycled a
minimum of ten times and tested against the possible ‘pre-set’ of
the seals. This is a safety precaution recommended by the Seal
manufacturers.
12 Retractor Rods
12.1 Spring Removal System Board.
HYTORK’S “SPRING REMOVAL SYSTEM BOARD” contains a full
set of Retractor Rods so that any size of Actuator can be disas-
sembled on site.
Standard spare parts kits for XL26 to 221 contain the required Re-
tractor Rods. For XL281 to XL4581 seperate Retractor Rod kits are
available. These Rods are not included in the spare parts kits but are
seperately available.
Ask your local HYTORK representative or Stocking Distributor of
HYTORK Products for details.
IMPORTANT:
- The HYTORK Retractor Rod tools are specially designed for
the safe removal of the Spring Return End Cap modules. Only
HYTORK manufactured or approved rods are to be used for
Spring End Cap removal.
- As with any threaded tool that is used frequently, Retractor
Rods should be checked to ensure that the threads are not
worn or damaged in any way and greased regularly. Any dam-
aged or worn Rods must not be used and must be destroyed.
- RetractorRodsmustbemadetothedesignspecicationfor
safety reasons. EMERSON PROCESS MANAGEMENT can not
take any responsibility for any other design.
13 Service
It is the policy of Emerson Process Management to give the best
possible service to our customers. We are happy to assist you in any
way we can and if you have any questions about HYTORK Actuators
or other HYTORK Products please do not hesitate to contact any
Valve Automation Center of Emerson Process Management or your
local HYTORK Stocking Distributor.
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