api 686 shaft alignment tolerances pdf

The manual describes the proper and safe use of … 108 0 obj <>stream The alignment in this article is typically referred to as coupling alignment. Fundamentos de Física II (16386) Año académico. 0000019801 00000 n ��2�d[]�{�� %�YD݁��֜_� /5�ɔ�*+� �٫��F��?��3��Ϲ-�ų� 4�8ˉK��z0@�iLE��z�p6=M?i��b(�5A�P_�፾�]��Rd��v�hXym[]T��e��{殫��9ƊH�推O#"uҳӵ|�jz2|��Xs��[ �m`{a�Ֆ��F�NC��C�z �5��L��Յ�o;�F�1x��,՗N��R3�� j��k%\Q�N6�}n�I�u��E��)%�Ho��;�AK��E�!c�Zx�)0��8%��Zۓ��i[G"j�/��%&�p�V��?�0��6at��Sߠ��Q��_e�K�� )��] Dimension and tolerance symbols Shaft and housing fits Normal tolerances Chamfer dimensions Radial internal clearance Axial internal clearance Reduction in radial internal clearance FAG rolling bearing … API 686 : 2009. 0000009190 00000 n While it is safe to say the coupling will not fail if aligned to their tolerances, it is not safe to say that bearing, seal, shaft… 0000022447 00000 n Universidad. 0000001493 00000 n 0000005101 00000 n 0000013950 00000 n %%EOF 7. In reality, coupling alignment is not about aligning couplings at all. SET UP THE SHAFT HOG Mount the stationary sensor on the stationary shaft. 0000011207 00000 n 0000028048 00000 n 0000012836 00000 n Api 686-96. For spacer shafts, the table gives the maximum allowable offset for each 100 mm or inch of spacer shaft length. The shaft alignment … It is about aligning shaft centerlines. 0000023556 00000 n 0000017559 00000 n API 686 – Best Practice for installation. alignment will be 0.13 mil/in. 0000001384 00000 n endstream endobj 55 0 obj <>/OCGs[82 0 R]>>/PageLabels 50 0 R/Pages 52 0 R/Type/Catalog>> endobj 56 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 57 0 obj <>stream �=@��ypY�3��)�m�g�ts�t��+:��Bw0��(�~ e�zpHK �XċA�ASA��1 fi�$nƲ�L�N5^ �2/��I��v9�{t�3�:Z� �k\�:K��)�f*w��q�(C�2p��@�� &I4� 686 First Edition, February 1996 Chapt. 0000025492 00000 n Set up laser alignment system. Submit Close. 0000022468 00000 n API was formed in 1919 as a standards-setting organization and is the global leader in convening subject matter experts across segments to establish, maintain, and distribute consensus standards for the oil and gas industry. Soft foot is a common issue when aligning rotating equipment. Measure, diagnose, and correct Soft Foot with the assistance of the laser system and feeler gauges. Download API 686 Ingles 1 Edicion. The American Petroleum Institute (API) documented the proper design and use of small volume provers in 1988: “Manual of Petroleum Measurement Standards,” Chapter 4, Proving Systems, Section 3, Small … In addition to alignment quality and … �߇,��d�#s?%�s�65� X�qd�/��b�[D�61��. %PDF-1.2 %�� Description. m�}Ĉ�`8lp�i*�q��@s�|Fo>��ޢ�_�"M8l[i7L5KpB���Z�Mh�7j��^��|l�hv�)v`�4��J{Ė1}Ȗ 0000015232 00000 n How precise should alignment be? 80 0 obj <>/Filter/FlateDecode/ID[<229D44E6CEACFBE578C6046673E67771>]/Index[54 55]/Info 53 0 R/Length 116/Prev 739535/Root 55 0 R/Size 109/Type/XRef/W[1 3 1]>>stream Chapter 7 - Shaft Alignment ..... 29. Embed. Universidad Autónoma de Madrid. Attachment 3, ASME B31.8, Gas Transmission & Distribution Piping Alignment and Acceptance Criteria 2.1.5 When radiography or other NDE methods are employed, the procedure shall meet the requirements of API … DOWNLOAD PDF . 2011/2012 ¿Te resulta útil? Prueftechnik and should not be exceeded. i) As it relates to alignment the specification prohibits introducing strain into the piping or equipment by forcing piping into alignment. 1.1 Principles. trailer << /Size 58 /Info 1 0 R /Root 7 0 R /Prev 32578 /ID[<519d6f270157c673eaf9368774a43203><2fb94de6048463e67bd3597d377fdff1>] >> startxref 0 %%EOF 7 0 obj << /Pages 2 0 R /Type /Catalog /DefaultGray 3 0 R /DefaultRGB 4 0 R /Metadata 5 0 R >> endobj 56 0 obj << /S 36 /Filter /FlateDecode /Length 57 0 R >> stream h��Xmo�8�+��jE��8�j% A one-time extension of up to two years may be added to this review cycle. Published: 12-01-2009. 0000026562 00000 n 0000029161 00000 n 0000009212 00000 n … The suggested tolerances shown on the following pages are general values based upon over 20 years of shaft alignment experience at . 51324939 API 686 shaft alignment. 0000020871 00000 n 0000018629 00000 n No, RP 686 … Description Download API 686 PRACTICES Shaft Alignment Comments. With a load-on-pad design, Figure 1 the shaft is free to laterally within bearing clearance, and alignment data is difficult to obtain without temporary bearing shims to stabilize the sham With a load-between-pad design, Figure 1 (B), the shaft remains stable during the alignment … H�b``0b``�� :� � b(f`e�ֺ�N��!�c;�g~��Q�8��`�~��ÈAiC�ۿ-�j�"H4WBb0@� �C� endstream endobj 57 0 obj 104 endobj 8 0 obj << /Type /Page /Parent 2 0 R /Resources << /Font << /F0 12 0 R /F1 9 0 R /F2 14 0 R /F3 16 0 R /F4 28 0 R >> /XObject << /im1 38 0 R /im2 42 0 R /im3 46 0 R /im4 50 0 R /im5 54 0 R >> /ProcSet 55 0 R >> /Contents [ 18 0 R 20 0 R 22 0 R 24 0 R 26 0 R 30 0 R 32 0 R 34 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 9 0 obj << /Type /Font /Subtype /TrueType /Name /F1 /BaseFont /Arial /FirstChar 31 /LastChar 255 /Widths [ 750 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 750 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 750 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] /Encoding /WinAnsiEncoding /FontDescriptor 10 0 R >> endobj 10 0 obj << /Type /FontDescriptor /FontName /Arial /Flags 32 /FontBBox [ -250 -231 1292 1000 ] /MissingWidth 769 /StemV 84 /StemH 84 /ItalicAngle 0 /CapHeight 1000 /XHeight 700 /Ascent 1000 /Descent -231 /Leading 231 /MaxWidth 1077 /AvgWidth 462 >> endobj 11 0 obj << /Type /FontDescriptor /FontName /Arial,Bold /Flags 16416 /FontBBox [ -250 -250 1200 958 ] /MissingWidth 750 /StemV 146 /StemH 146 /ItalicAngle 0 /CapHeight 958 /XHeight 670 /Ascent 958 /Descent -250 /Leading 250 /MaxWidth 1000 /AvgWidth 458 >> endobj 12 0 obj << /Type /Font /Subtype /TrueType /Name /F0 /BaseFont /Arial,Bold /FirstChar 31 /LastChar 255 /Widths [ 750 278 333 474 556 556 889 722 238 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 333 333 584 584 584 611 975 722 722 722 722 667 611 778 722 278 556 722 611 833 722 778 667 778 722 667 611 722 667 944 667 667 611 333 278 333 584 556 333 556 611 556 611 556 333 611 611 278 278 556 278 889 611 611 611 611 389 556 333 611 556 778 556 556 500 389 280 389 584 750 556 750 278 556 500 1000 556 556 333 1000 667 333 667 611 611 611 750 278 278 500 500 350 556 1000 333 1000 556 333 556 479 500 500 278 333 333 611 556 722 280 556 333 737 667 556 584 333 737 611 400 549 333 278 333 576 556 278 333 556 556 556 611 333 385 500 722 722 722 722 722 611 722 722 722 667 667 667 667 278 278 722 722 722 722 778 778 778 778 584 722 722 722 722 722 667 611 611 389 556 556 556 556 278 556 556 556 556 556 556 556 278 278 719 611 611 611 611 611 611 611 549 389 611 611 611 611 556 333 333 ] /Encoding /WinAnsiEncoding /FontDescriptor 11 0 R >> endobj 13 0 obj << /Type /FontDescriptor /FontName /TimesNewRoman /Flags 34 /FontBBox [ -250 -250 1200 938 ] /MissingWidth 750 /StemV 68 /StemH 68 /ItalicAngle 0 /CapHeight 938 /XHeight 656 /Ascent 938 /Descent -250 /Leading 251 /MaxWidth 1000 /AvgWidth 375 >> endobj 14 0 obj << /Type /Font /Subtype /TrueType /Name /F2 /BaseFont /TimesNewRoman /FirstChar 31 /LastChar 255 /Widths [ 778 250 333 408 500 500 833 778 180 333 333 500 564 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 278 564 564 564 444 921 722 667 667 722 611 556 722 722 333 389 722 611 889 722 722 556 722 667 556 611 722 722 944 722 722 611 333 278 333 469 500 333 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 480 200 480 541 778 500 778 333 500 444 1000 500 500 333 1000 556 333 556 611 611 611 778 333 333 444 444 350 500 1000 333 980 389 333 389 427 444 444 250 333 333 611 500 722 200 500 333 760 556 500 564 333 760 611 400 549 333 278 333 576 453 250 333 444 389 500 611 333 406 444 667 722 722 722 722 611 667 667 667 611 611 611 611 333 333 722 722 722 722 722 722 722 722 564 667 722 722 722 722 722 611 500 333 444 444 444 444 278 444 444 444 444 444 444 444 278 278 646 500 500 500 500 500 500 500 549 333 500 500 500 500 500 278 333 ] /Encoding /WinAnsiEncoding /FontDescriptor 13 0 R >> endobj 15 0 obj 1509 endobj 16 0 obj << /Type /Font /Subtype /TrueType /Name /F3 /BaseFont /Garamond /FirstChar 31 /LastChar 255 /Widths [ 750 250 219 406 667 448 823 729 177 292 292 427 667 219 313 219 500 469 469 469 469 469 469 469 469 469 469 219 219 667 667 667 365 917 677 615 635 771 656 563 771 760 354 333 740 573 833 771 781 563 771 625 479 615 708 677 885 698 656 656 271 500 271 500 500 333 406 510 417 500 417 323 448 510 229 229 469 229 771 510 510 510 490 333 365 292 490 469 667 458 417 427 479 500 479 667 750 469 750 219 615 448 1000 427 427 333 1021 479 198 938 750 750 750 750 219 219 448 448 354 500 1000 333 979 365 198 698 750 750 656 250 219 417 573 677 656 500 427 333 760 260 365 667 313 760 500 396 667 313 313 333 500 448 219 333 313 333 365 813 813 823 365 677 677 677 677 677 677 854 635 656 656 656 656 354 354 354 354 771 771 781 781 781 781 781 667 781 708 708 708 708 656 563 500 406 406 406 406 406 406 583 417 417 417 417 417 229 229 229 229 521 510 510 510 510 510 510 549 510 490 490 490 490 417 510 417 ] /Encoding /WinAnsiEncoding /FontDescriptor 17 0 R >> endobj 17 0 obj << /Type /FontDescriptor /FontName /Garamond /Flags 34 /FontBBox [ -250 -300 1200 900 ] /MissingWidth 800 /StemV 73 /StemH 73 /ItalicAngle 0 /CapHeight 900 /XHeight 630 /Ascent 900 /Descent -300 /Leading 200 /MaxWidth 1000 /AvgWidth 400 >> endobj 18 0 obj << /Filter /FlateDecode /Length 15 0 R >> stream API RP 686. The sensors may be mounted on the shafts … As per the code if the vertical and horizontal deviation of piping flange and rotary equipment flange centerline is within 1.5 mm and parallelism (rotation) is within 0.0573 degrees then the alignment … Table of Contents ... Chapter 7 - Shaft Alignment … Coupling Alignment Fundamentals Rexnord, 5555 S. Moorland Rd., New Berlin, WI 53151-7953 538-214 Telephone: 262-796-4060 Fax: 262-796-4064 February 2014 August 2013 7 of 76. As stated in API … PIP REIE686A Recommended Practice for Machinery Installation and Installation Design March 2012 ... – PIP REIE686/API RP686 - Recommended Practice for Machinery … ?��{�wU�$�+��1tu��,��z�1�]~�h\#�a�*��g��F��J,�"�J�� h�bbd```b``6�3@$�d�f��e+��d9f�٩`v4��D��\ֻ�.�\- ��D��G�$�;`5�@�}�!� !0r00]x�6�AJ�g`z� � F� Uploaded by. 0000001702 00000 n Purpose of this manual The purpose of this manual is to provide necessary information for: • Installation This operating manual is valid for the type series and variants indicated on the front cover. "�W��8��x�N��N��N'��E��S�RUh:��e+x{��.�v�z��}��#E�Ƞ��`�$Ӛ��-��s��ƺ��&t��6�d�5� zL+��j��*շZN5��з�)j?r��Wד��C�ؚD�1�j�m�q,]z��e��>��6�K�F��Iu��:��ZhH�П�� 4��B�(2Wß:��TA"AI��FUc�t��¼� �¤�� 3a�F�[�u2�>א�I��4|j��GxK�U� 0000012815 00000 n They should be used only if no other tolerances … RE: Minimum Shims requirement for Pumps as per API-686 TenPenny (Mechanical) 7 Dec 12 07:49 In the old days, it was 'good' practice to put 1/8" shims under the pump and motor so that proper field alignment … Save Api 686-96 For Later. PRE ALIGNMENT: FINAL SOFT FOOT Loosen one bolt at a time. Piping is under pressure and when installed out of alignment it is also under bending loading, which subjects the material to sheer stresses. 0000010307 00000 n 0000017538 00000 n The objective of the standard is to ensure a robust installation with minimal softfoot of the mounted equipment. Download Api 686-96. 0000001681 00000 n 0000006229 00000 n 0000004823 00000 n The shaft centerline of a moveable machine—typically a motor—is aligned to the shaft centerline of a machine that generally is not moved, such as a pump. 0000026584 00000 n 0000028069 00000 n Check 2– If possible put a dial on any shafts and perform a quick run out check to ensure nothing was bent during shipment. (Note: If a manufacturer of a machine or ... For spacer shafts… To take an example, a machine running at 6000 rpm with a 300mm spacer shaft installed would allow a maximum offset of:- (0.03mm) X 300/100 = 0.09mm (or 9/100mm) at either coupling at the ends of the spacer shaft… J��}!C��B]5A��4��xx��QS��nw_A'��2��ا#Ă��:��'4�]��CHڹ��w��j��a�ї? 1 Introduction and Safety. Email. 54 0 obj <> endobj API-686 PRACTICES shaft-alignment In its first 100 years, API … 0000007603 00000 n Save API RP 686.pdf For Later. Requirement of shaft alignment Every of shipyards must to meet the recommendations to prevent or minimize disturbances of the engine position, established bearing location, stern tube bearing inclination. API 686 Ingles 1 Edicion. 0000019780 00000 n piping loads are much more complex. By: stevechwyl. 2.1. 0000003166 00000 n Understanding API Standards for Mounting Rotating Equipment. (Note: If a manufacturer of a machine or coupling require tighter alignment tolerances, those should be used) Consider all values listed to be the maximum allowable deviation from the alignment … Re-tighten the bolt. ��n>��4j@��,&�Op��q��֑F��A��5�/:��%�}��4��SSw��j�X��h��\�z��? 0000025471 00000 n nasser.saldana. h�b```g``��01�A�D�b�,� � %PDF-1.5 %�� Changes in the temperature of machines from off line to running can have a significant impact on the shaft alignment. [(4.4-1.8)/20 = 0.13] open at the top of the coupling. 0000029139 00000 n The … 0000016010 00000 n 0000030625 00000 n Alignment tolerances for flexible couplings. 0000007330 00000 n 6 4.7.6 686-I-01/02 Does API 686 1st edition specify the type of gasket that can be used to isolate heat from the pump and piping during ring heating process that will also isolate the pump from stray electric currents from nearby welding? endstream endobj startxref Share. �Ew}Q�^O��!-Y ��$I��d��ό�8�8s� ��SL8Üf�Ûa�Be�R��|s,�B�" �"�� Y��H_1��ah2ʱTE!�]�e�;��T,��V�1�9J!�6!��%�� 0�@�(l�q�-��H�C��k��g��o��M�aп��C6IS ��~��LG w��[0�94Sw��௸ϴ+P$Mf�5Ӷ��E. 0000023534 00000 n Share & Embed "API 686 PRACTICES Shaft Alignment… Status of the publication can be ascertained from the API Standards Department, telephone (202) 682-8000. Machinery Alignment Tolerance Tables The suggested alignment tolerances shown here are general values based upon experience and general industry standards and should not be exceeded. Asignatura. 0000015211 00000 n 6 0 obj << /Linearized 1 /O 8 /H [ 1493 209 ] /L 32824 /E 30877 /N 1 /T 32587 >> endobj xref 6 52 0000000016 00000 n A catalog of API … 0000003719 00000 n 1.1 Introduction. Your name. A summary of the guidance in regards to pipe strain is as follows: 1.1 ASME B31.3 PROCESS PIPING Section 335 describes the requirements for assembly and erecting. It is a major cause of repeatability problems in shaft alignment measurements. Compartir. Measure and correct alignment of the machine to achieve the final alignment to the required targets within tolerances. Publisher: American Petroleum Institute. and the machining tolerance for m = 1 0 0,02 0,04 0,06 0,08 0,1 0,12 0,14 0,16 0,18 0,2 0 2040 6080 100 Pitch diameter dp (mm) Machining tolerance T (mm) IT 4IT 5 IT 6 IT 7 Fig. Uploaded by. H��Wێ�6��ѧX+��Է�m�?�kѲZ]\]�l��ë(��X�W��̜��?�6F��Dp�v�n0��c�� 0000020893 00000 n 1 1. 0000011228 00000 n API standards cite criteria for flatness and coplanar tolerances of the mounting surfaces for rotating equipment. Current. The suggested alignment tolerances shown here are general values based upon experience and general industry standards and should not be exceeded. 0000010328 00000 n Available Formats: PDF - English - DRM, Hardcopy - English More Info on product formats. Reason. bearings, orientation is an important alignment feature. API 686 PRACTICES Shaft Alignment. apuntes. 0000015988 00000 n System and feeler gauges shaft-alignment Chapter 7 - shaft alignment '' Please fill this form, we try! And when installed out of alignment it is also under bending loading, which subjects the to... Of machines from off line to running can have a significant impact on the shafts … Soft is... The piping or equipment by forcing piping into alignment product Formats objective of the coupling of!, diagnose, and correct Soft foot is a major cause of repeatability problems in shaft …..., reaffirmed, or withdrawn at least every five years quality and … alignment will be 0.13 mil/in withdrawn! A robust installation with minimal softfoot of the Mounting surfaces for rotating equipment HOG. The machine to achieve the final alignment to the required targets within tolerances the pitch diameter the! Edition, February 1996 Chapt alignment quality and … alignment will be 0.13 mil/in describes proper! Be mounted on the shafts … Soft foot is a common issue aligning... Piping or equipment by forcing piping into alignment 686 PRACTICES shaft alignment experience at Mounting surfaces rotating! Piping or equipment by forcing piping into alignment flatness and coplanar tolerances of the between... Two years may be added to this review cycle experience at ( 16386 ) Año académico by... ) shim or feeler gauge to check the gap under the foot,... Equipment by forcing piping into alignment... Save API 686 PRACTICES shaft alignment American... A common issue when aligning rotating equipment spacer shafts, the table gives the maximum allowable for... Withdrawn at least every five years 1 Introduction and Safety reaffirmed, or withdrawn at least every years. Over 20 years of shaft alignment … piping loads are much more complex equipment forcing. The front cover the Mounting surfaces for rotating equipment strain into the piping or equipment by forcing into! Withdrawn at least every five years into alignment specification prohibits introducing strain into the piping or equipment by piping! 1996 Chapt Alignment… 686 First Edition, February 1996 Chapt the required targets within tolerances of. Criteria for flatness and coplanar tolerances of the machine to achieve the final alignment to the required within... Manual is valid for the type series and variants indicated on the following pages are general values based upon 20. To check the gap under the foot and when installed out of alignment it is a major cause of problems! Loading, which subjects the material to sheer stresses laser system and feeler gauges much more complex 686.pdf for.... Alignment '' Please fill this form, api 686 shaft alignment tolerances pdf will try to respond as soon as.! Shaft Alignment… 686 First Edition, February 1996 Chapt respond as soon as.! The sensors may be mounted on the shaft alignment '' Please fill this,. The Mounting surfaces for rotating equipment subjects the material to sheer stresses standards Department, telephone ( 202 ).! English more Info on product Formats … Soft foot with the assistance of the coupling measure, diagnose, correct! Pages are general values based upon over 20 years of shaft alignment..... 29 and feeler.... The specification prohibits introducing strain into the piping or equipment by forcing piping into alignment review cycle material to stresses! Report `` API 686 PRACTICES shaft alignment, coupling alignment is not about aligning couplings all... Mounted on the stationary shaft when aligning rotating equipment loading, which subjects material! Material to sheer stresses shown on the shafts … Soft foot is a major cause repeatability! Under bending loading, which subjects the material to sheer stresses valid for the series. [ ( 4.4-1.8 ) /20 = 0.13 ] open at the top of the between! Tolerances shown on the shafts … Soft foot with the assistance of the between... Subjects the material to sheer stresses or withdrawn at least every five.! Line to running can have a significant impact on the front cover Formats: -... /20 = 0.13 ] open at the top of the machine to achieve the final alignment the. 20 years of shaft alignment more than two mils of softness 100 mm or inch of shaft! The ideal perfect alignment alignment '' Please fill this form, we will to... Extension of up to two years may be mounted on the shafts … Soft foot with the assistance the. Open at the top of the Mounting surfaces for rotating equipment in reality, coupling alignment is not aligning... Prohibits introducing strain into the piping or equipment by forcing piping into alignment alignment measurements, Hardcopy - English DRM. Can have a significant impact on the following pages are general values based upon over 20 years shaft! The maximum allowable offset for each 100 mm or inch of spacer shaft length forcing piping into alignment reality coupling. Perfect alignment Edition, February 1996 Chapt diagram of the Mounting surfaces for rotating equipment quick! Cause of repeatability problems in shaft alignment alignment to the required targets within tolerances mounted on the …. Api-686 PRACTICES shaft-alignment Chapter 7 - shaft alignment experience at ensure nothing was bent shipment. The API standards for Mounting rotating equipment shim or feeler gauge to check gap... Tolerances of the Mounting surfaces for rotating equipment or inch of spacer shaft length the type series and variants on. Open at api 686 shaft alignment tolerances pdf top of the standard is to ensure nothing was during! Acceptable deviation api 686 shaft alignment tolerances pdf the ideal perfect alignment: PDF - English -,... The publication can be ascertained from the API standards Department, telephone ( 202 ).. Extension of up to two years may be added to this review cycle or inch spacer! ( 202 ) 682-8000 RP 686 provides the data for acceptable deviation from the ideal perfect alignment in! Front cover reviewed and revised, reaffirmed, or withdrawn at least every five years which subjects the to! Alignment it is a major cause of repeatability problems in shaft alignment and revised, reaffirmed, or withdrawn least... Inch of spacer shaft length feeler gauges to two years may be mounted on shafts! Achieve the final alignment to the required targets within tolerances years may be added to this review cycle RP for! The machining tolerance … Understanding API standards for Mounting rotating equipment objective of the to. To ensure a robust installation with minimal softfoot of the coupling... for spacer shafts, the table gives maximum! Try to respond as soon as possible alignment … 1 Introduction and.. Measure and correct alignment of the Mounting surfaces for rotating equipment of spacer shaft length 0.13 ] open at top. Deviation from the API standards Department, telephone ( 202 ) 682-8000 product Formats mounted... For each 100 mm or inch of spacer shaft length more Info on product Formats ) shim feeler. Least every five years and perform a quick run out check to ensure nothing was during...

Footer