Regainmy bearingsmeaning

Here is the life I live outside my head: I wash dishes. Sinks and sinks and sinks full of dishes every day, because I live with four children, one husband, and no dishwasher. Sometimes my husband does the dishes. Sometimes the children do the dishes. But sometimes none of us wash the dishes, and they heap up in the sink so high you can’t fit your glass under the faucet, and they multiply across the counters, and we have to fish our hands into the cold leftover dishwater for spoons with which to eat our bowls of cold cereal, and the sugar ants scramble on the jelly knife, and in the morning I wake up guilty and sticky and I sigh and turn the water on.

Identifying a suitable tolerance ensures the part’s manufacturer is aware of the critical dimensions in specific areas and focuses on them. Paying attention to these dimensional limitations is typically the difference between producing mating parts and those ending up in the scrap bin.

The designer will draw the hole with a unilateral tolerance: ⌀.2495 +.0000/-.0005. This will result in a press-fit ranging from .0005″ to .001″. In this case, either a ⌀.249 or ⌀.2495 reamer will provide a light press fit. On the example it is shown how a 6mm hole would be dimensioned for a press-fit.

Gather my bearingsmeaning

A tolerance range gives the manufacturer an acceptable boundary for deviation. If your part requires a specific level of precision, the tolerance system communicates it and ensures you will receive the accuracy you need.

Getmy bearingsstraight meaning

Whenever a dimension varies beyond the tolerance (the lathe operator turns the shaft to a diameter of .998), it is identified with terms like non-compliant, rejected, or exceeding the tolerance.

Findmy bearings

Levi’s favorite color changes every night, from blue to brown to red to silver to green to orange to blue again. I suppose he is thinking of some food he ate today, or a Lego creation he assembled, or a Superhero comic he tried to draw. But every time Levi asks me what my favorite color is, I look at my son’s brown hair, his brown eyes dancing in his pink skin, his red lips parted over the white crowd of grown-up and baby teeth, and I always reply, “My favorite color is Levi-color.”

In the life I live outside my head, which is my one life, and the only life I have, I lay down with each child at the end of each day. When I come to my middle son Levi’s bed, and stretch myself down along the outside edge of his faded Bob the Builder comforter, and fling my arm across the hand-me-down Blue’s Clues pillowcase so that he can settle his cheek into the crook of my arm, he asks me each and every night, what my favorite color is, and I ask him for his.

Sarah Sanderson lives her one life in the Portland, Oregon area with her husband and four children. Read more of her work on her website, or find her on Facebook or Twitter.

Typically used to define tolerances in precision fit parts, unilateral tolerances feature dimensions where variations are only allowed on one side of the nominal size. An excellent example is when a .250 dowel pin must fit into a hole with a light press fit.

In the life I live outside my head, I drive one child to piano and another to soccer and another to baseball and another to youth group, sometimes all on the same night. The sliding doors on my minivan no longer slide, so the children have to clamber over me in the front seat when I drop them off, and they leave cakes of dirt smeared across my sleeve as they accidentally kick me in their struggle to get out of the car. On the way to a church potluck, I spill a crockpot of beans in back of the van, and fuzzy white mold spores take root in the juice before I clean it up, and my children say, “It smells like something died in here!” and I reply, “Our hopes and dreams,” and my husband does not appreciate the joke.

My freshman year of college, I am a medical missionary. After medical school, I stride into the African sunrise, where sick people crowd around, and just a touch will heal them. I save and save and save, bodies and souls, and then I write letters to my supporters back home and save them, too.

In the life I live outside my head, I have a part-time job as a part-time teacher, teaching things I can only remember part of the time. I forget the discussion questions, or why they are important. I forget to ask the writing students to read from their work. I forget to ask the public speaking students to give one another feedback. I am so busy remembering how to do this job that I forget everything.

Gather my bearingssynonym

Bilateral tolerance is used when a two-limit dimension is above and below the nominal size. For instance, a shaft could have a measurement.

Machinists and designers use GD&T, print dimensions, and notes to create a manufacturing process that results in a high-precision component replicating the designer’s original vision. Proper detailing on the drawing enhances communication between the customer and vendor.

Suppose you do not include tolerances on your drawings. In that case, you are giving the manufacturer free rein to use their in-house standard, and these generic tolerances might not suffice if your components must fit together at the final assembly.

Gettingmy bearingsback

Getmy bearingsin a sentence

At sixteen, I am a lawyer, living in a house in Boston with a roommate and two cats. I am engaged, not married. I tell myself this in a letter marked “Read in ten years,” which I leave in my desk drawer for ten years, and then read.

Bearings Online is a web-based publication produced several times a week that examines relationships between religion and culture, highlights unexplored facets of contemporary religious life, and suggests faithful responses to today’s problems and opportunities.

Engineers depend on GD&T to design every critical aspect of a part, including a specific feature’s location, form, profile, and orientation. GD&T is essential in complex machining because it provides numerous benefits:

Getmy bearingstogether

Example indicates that the shaft is within tolerance if it measures anywhere between 1.5002 at the upper limit (above) and 1.4998 at the lower limit (below). Bilateral tolerances can allow either equal or unequal variations on each side of the nominal size.

But in the life I live outside my head, my husband lays his head in my lap or we sip beer from jars because all our glasses have broken, and we flip channels on TV. Our children are finally big enough to ride their bicycles unassisted, so we take family bike rides, and our path skirts the freeway for only a hundred yards before we reach the river where the water runs high and the buds quicken on the trees.

Tolerances instruct the manufacturer on an acceptable measurement range from the basic or nominal dimension. For example, if the nominal dimension on a shaft is shown as ⌀1.000 (+.000/-.001), the acceptable range of diameters is 1.000 as the maximum and .999 as the minimum. While this is a relatively simple example, tolerances also set limits on the most complex parts.

In one, I am a principal. Parents seek me for advice; teachers come to me for sustenance; children gaze at me with respectful glee. I attend Back-to-School Nights, PTA meetings, soccer tournaments, and budget sessions. I make decisions, I make connections, I make a hundred thousand a year.

GD&T is a design and manufacturing mechanism that helps engineers communicate to manufacturers how to build a part that matches the drawing and is precisely what the customer desires.

Using symbolic language, GD&T shows how much a part’s features may deviate from the geometries listed in the design model. This symbolic language has all the pertinent details involved in the manufacturing process, such as dimensions, tolerances, definitions, rules, and symbols communicating a component’s functional requirements.

However, going overboard with close tolerances on every dimension could be costly. Determine which are the precision dimensions and stay loose on the others. Precision is expensive, and you don’t want to price your parts well above the competition for no good reason.

Engineering tolerance is the permissible variation in measurements of a dimension or other measurable value from the designed size. Although tolerances can be applied to different units, such as temperature or humidity, mechanical engineers are primarily interested in tolerances on linear, angular, and other physical dimensions.

In another, I speak. I step into the pool of light in the center of the stage and pause to gaze at the hungry faces I cannot see, their ears cocked and ready, their aching bodies tilted forward in the darkness. I gather my words up into my mouth, and when I part my lips, the microphone and I are one: we amplify words. My words thunder, reverberate, and steal quietly into the hearts and minds of every soul in the arena. My words bring hope and laughter and tears and life. After the talk, the line for a chance to shake my hand wraps around and around and around the exhibition hall.