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A pit depth gage (PD-3004) is used to measure the depth of pitting in a thread’s roots. Inspecting and quantifying a root’s pit depth is a recommend practice in API 7G-2 “Recommended Practice for Inspection and Classification of Used Drill Stem Elements”. Simply zero the PD-3004 in a root (or a non-pitted surface), and then […]
When inspecting a BX, R, or RX seal ring groove with a Gagemaker BX-1000, the groove width can be obtained by inspecting the minor and major diameters. To measure the minor diameter, simply reverse the spring’s direction on the gage and re-set.* First, measure the major diameter. Second, invert the spring. Then after setting, measure […]
Thread length is a simple check to ensure you have cut enough threads onto your part. For tubing & casing and rotary shouldered connections, thread length is measured with a scale placed parallel to the thread axis. Do not measure along the taper nor touch the scale to the crests of the threads.
When measuring taper, different tubing and casing forms require specific size contact points due to the engagement of the point on the thread. Plus, API 5B mandates the proper size. 8 & 10 Round: The proper size causes the point to contact the thread flanks at the pitch line, effectively, measuring the taper on the […]
To best ensure your BX-1000 is measuring diameters at the correct depth, set the ball height (Height Over Ball dimension) with a PD-BX setting gage. First, zero out the PD-BX gage on a gage pin or gage block stack up. Second, unlock the BX-1000 block assembly. Third, place the PD-BX over the contact point of […]
When inspecting thread height on a thread form with a root radius (e.g. a rotary shouldered connection), the appropriate ball contact size is key. To determine the true root to crest value (thread height), you must select a ball contact with a radius smaller than the root radius. Otherwise, the ball contact will cause an […]
When inspecting thread run-out on buttress connections 16″ and over (1″ TPF), API 5B requires setting the gage to zero on the perfect threads of the part as opposed to zeroing on a flat surface. As 1″ TPF buttress threads are stairstepped, their thread roots are parallel to the thread axis, while ¾” TPF Buttress […]
Setting an MRP™ requires two dimensions: the distance between each shoe (the “A” or “CPU” dimension) and the distance between the shoe and the wear pad (the “B” dimension). If you use rod standards, then both the “A” and “B” must be specified and set. However, on a MIC TRAC™, the CPU dimension must be […]
When setting an external or internal pitch diameter gage, zeroing the gage on the MIC TRAC involves sweeping between or across the anvils to find smallest indicatior reading. Utilizing the TF-1F blocks in combination with TF-SV’s allows the operator to easily zero the gage, by simply placing the ball contacts in the “V”, eliminating the […]
When zeroing an MT-3000, bring the anvils together and apply a slight amount of torque on the coarse adjust knob. Continue to hold this small amount of force on the coarse adjust knob and press the Enter button (left facing arrow) on the digital read-out. You’ll know you have applied the proper amount of load […]