JN Series Hydraulic Wrenches

JN Series Hydraulic Wrenches

JN Series Wrench - the Jam Nut wrench

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The JN Series Hydraulic Wrench is used to loosen and accurately tighten reciprocating compressor jam nuts, as well as the jam nuts on top drive drilling rigs.


Torq/Lite’s custom adapters fit inside the split-head design, allowing additional and innovative applications for use of the JN Wrench. Any nut with a shaft or rod through its center can be easily tightened or loosened with controlled torque.


The only high torque, precision wrench for obstructed nuts.


A hazardous job of eight hours & eight men becomes a half hour, one man task.

Light weight and compact.





Tightening a Top Drive   Compressor Jam Nut Removal


Looking for a RENTAL alternative? See our solutions for Turnarounds and Major Maintenance Projects here...


Standard JN Series Wrench Sizes



Hydraulic Pump designed for JN Wrenches


The power unit should be carefully selected for the site and task.  Each pump is uniquely manufactured for the task and service intensity.  Special attention has been given to the operator’s safety and ease of use.


With our closed system, manual hydraulic pumps or hand pumps can operate in any position without losing pressure and requiring purging air. This liberates the operator to work more comfortably, faster, and safer.


Powerful and Portable, the JN's Exclusive Pump :

  • Bi-Directional 10,000 p.s.i. Hydraulic Power Unit
  • Included with the JN Wrench package
  • Drives Hydraulically Forward & Pneumatically Retracts


JNAHC-10 Turbo Air/Hydraulic Pump






Enerteq Spotlight

Tool Rental Solutions for Turnarounds and Major Maintenance Projects



EZ Calc - Bolting Calculator, Enerteq's oline tool for estimating Required Torque Values. Use to determine Torque, Bolt Load and Percent Yield of Maximum Load of Bolts.