LM Guide THK - Industrial Technologies

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Индастриал Технолоджис www.industrial‐technologies.com.ua +38 044 498 21 94JRStructural Member Rail Model JRStructural Member Rail LM Guide Model JR0LM GuideStructural Member Rail Model JREnd sealGrease nippleLM blockEndplateUpper plateSide sealLM railLower plateStructure and FeaturesA1-235Second Moment of Inertia of the LM RailA1-235Types and FeaturesA1-236Rated Loads in All DirectionsA1-237Equivalent LoadA1-237Service Life A1-76Radial Clearance Standard A1-91Accuracy Standards A1-97Shoulder Height of the Mounting Base and the Corner RadiusA1-308Error Allowance in the Parallelism between Two RailsA1-315Error Allowance in Vertical Level between Two RailsA1-318Dimensional Drawing, Dimensional Table, Example of Model Number CodingB1-172Standard Length and Maximum Length of the LM RailB1-174Model JB frame for LM rail clampsB1-175Model JT steel plate for LM rail clampsB1-175BallCross section45°45°Industrial TechnologiesA1-234
Индастриал Технолоджис www.industrial‐technologies.com.ua +38 044 498 21 94Features of Each ModelStructural Member Rail Model JRStructure and FeaturesBalls roll in four rows of raceways precision-ground on an LM rail and an LM block, and endplatesincorporated in the LM block allow the balls to circulate. Since retainer plates hold the balls, they donot fall off even if the LM rail is pulled out.Model JR uses the same LM block as model HSR, which has a proven track record and is highly reliable.The LM rail has a sectional shape with high flexural rigidity, and therefore can be used as astructural member.Unlike the conventional LM Guide type, whose LM rail was secured onto the base with bolts wheninstalled, model JR's LM rail is integrated with the mounting base, and the top of the LM rail has thesame structure as LM Guide model HSR. The lower part of the LM rail has a hardness of HRC25 orless, making it easy to cut the rail and enabling the rail to be welded.When welding the rail, we recommend using welding rods compliant with JIS D 5816. (suggestedmanufacturer and model number: Kobelco LB-52).[4-way Equal Load]Each row of balls is placed at a contact angle of 45° so that the rated loads applied to the LM blockare uniform in the four directions (radial, reverse radial and lateral directions), enabling the LM Guideto be used in all orientations.[Can be Mounted Even Under Rough Conditions]Since the center of the cross-section of the LM rail is slightly thinner, even if the parallelism betweentwo rails is not accurate the LM rail is capable of absorbing the error by bending inward or outward.[Sectional Shape with High Flexural Rigidity]Since the LM rail has a sectional shape withhigh flexural rigidity, it can also be used as astructural member. In addition, even when theLM rail is partially fastened or supported in cantilever,the distortion is minimal.Second Moment of Inertia of the LM RailHY axisCenter point of gravityX axisGeometricalmoment of inertiaI [10 5 mm 4 ]About AboutX axis Y axisFig.1Modulus ofsectionZ [10 4 mm 3 ]Height ofgravitationalcenterH [mm]AboutX axisAboutY axisJR 25 1.90 0.51 0.69 0.21 19.5JR 35 4.26 1.32 1.43 0.49 24.3JR 45 12.1 3.66 3.31 1.04 33.1JR 55 27.6 6.54 5.89 1.40 43.3LM GuideIndustrial TechnologiesFig.2A1-235
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LM Guide THK - Industrial Technologies

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