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JB/T 5948-2013 English PDF

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Upon your order, we will start to translate JB/T 5948-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

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Q: Should I purchase the latest version JB/T 5948-2013?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JB/T 5948-2013 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$339.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JB/T 5948-2013: Construction machinery. Caliper disc brake. Technical specifications
Status: Valid

JB/T 5948: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JB/T 5948-2013	339	Add to Cart	3 days	Construction machinery. Caliper disc brake. Technical specifications	Valid
JB/T 5948-1991	85	Add to Cart	Auto, < 3 mins	Construction Machinery caliper disc brakes technical conditions	Obsolete

Similar standards

GB/T 8419 JGJ 276 JB/T 5939 JB/T 5940 JB/T 5938

Basic data

Standard ID: JB/T 5948-2013 (JB/T5948-2013)
Description (Translated English): Construction machinery. Caliper disc brake. Technical specifications
Sector / Industry: Mechanical & Machinery Industry Standard (Recommended)
Classification of Chinese Standard: P97
Classification of International Standard: 53.100
Word Count Estimation: 13,129
Older Standard (superseded by this standard): JB/T 5948-1991; JB/T 7156-1993
Quoted Standard: GB/T 2829; GB 5763; GB/T 13306; JB/T 5936; JB/T 5937; JB/T 5938; JB/T 5944; JB/T 5945; JB/T 5946; JB/T 5947; QC/T 239; QC/T 479
Regulation (derived from): Ministry of Industry and Information Technology Bulletin 2013 No. 23; industry standard filing Notice 2013 No. 6 (No. 162 overall)
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the classification under wheel drive mechanical brake caliper disc brake system, requirements, test methods, inspection rules, marking, packaging, transport and storage. This standard applies to loaders, scrapers, graders and dump

JB/T 5948-1991 P 97 PROFESSIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Construction machinery caliper disc brake Technical conditions ISSUED ON. DECEMBER 12, 1991 IMPLEMENTED ON. JULY 01, 1992 Issued by. Ministry of Machine Building Electronics Industry of People’s Republic of China

1 Subject contents and application scope ... 3 2 Normative references ... 3 3 Technical requirements ... 4 4 Test methods ... 8 5 Inspection classifications ... 9 6 Marking, packaging, transportation and storage ... 10 7 Quality assurance periods ... 11 Annex A The technical requirements of main positions of the major components (Supplement) ... 12 Annex B Calculation method of rotational inertia (Supplement) ... 13 Annex C Records and reports of bench test (Reference) ... 14 Additional explanation ... 15 References and Original Chinese Documents ... 16 PROFESSIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA JB/T 5948-91 Construction machinery caliper disc brake Technical conditions 1 Subject contents and application scope This Standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage for caliper disc brake of wheel type construction machinery traveling crane brake system. This Standard applies to caliper disc brakes of loaders, scrapers, graders, dumpers and other wheel construction machinery traveling crane brake system (hereinafter referred to as the brake).

Normative References

JB 3935 Automotive brake--Performance requirements JB/T 5937 Engineering machinery--General technical specifications for gray pig iron parts JB/T 5938 Engineering machinery--General technical specifications for ductile iron castings JB/T 5944 Engineering machinery--General technical specifications for heat-treated work pieces JB/T 5936 Engineering machinery--General technical specifications for mechanical processed parts JB/T 5945 Engineering machinery--General technical specifications for assembling GB 5763 Brake linings for automobiles GBn 257 Car brake lining (Supplement for shape, friction performance and impact strength) JB 2805 Trucks and buses—Brake—Bench test methods JB 8 Product plates JB/T 5947 Engineering machinery—General technical specifications GB 2828 Sampling procedures and tables for lot-by-lot inspection by attributes (Apply to inspection of successive lots or batches) 3 Technical requirements Brake products shall comply with the provisions of this Standard and be manufactured according to the product drawings and technical documents approved by specified procedures, if there is any special requirements, it shall be executed according to the agreement between the user and the manufacturer. 3.1 Performance requirements 3.1.1 The initial braking speed of brake for the first, second and third effective performance tests is 20km/h, when the brake line pressure is the maximum value specified by the manufacturer, the braking torque output by brake shall be no less than the rated value. 3.1.2 During the first, second and third effective performance tests, the difference of the braking torque output - BETWEEN the initial braking speed is 40km/h AND the initial speed is 20km/h - shall not be more than 10%, counted in percentage. 3.1.3 Other performance requirements for the brake shall be consistent with the relevant provisions of JB 3935, and the performance requirements are shown in Table 1. 3.2 Materials The raw materials used by the brakes shall have a formal mark and a certification of the manufacturing plant. The manufacturer shall carry out random checks, and the brakes can only be used after the qualification is confirmed. 3.3 Supporting parts and purchased parts The supporting parts and purchased parts used by the brake must have product certifications; spot check shall be conducted by the manufacturer and the parts can only be assembled after passing the check. 6.2.1 The product packaging shall comply with relevant requirements of JB/T 5947. 6.2.2 Products shall be completed with moisture-roof and rust-roof treatment when being packaged. 6.2.3 Inlet opening and deflating valve shall be equipped with oil proof plug and protective cover. 6.2.4 Each product shall be accompanied with the following technical documents when delivery. a. Product qualification certificate; b. Accessories and spare parts catalog. 6.2.5 The external surface of packing cases shall indicate following contents. a. Product model and name; b. Product factory serial number and factory date; c. Manufacturer name and address; d. Consignee organization and address. e. Gross weight/Net weight f. Names of the shipping and arrival station (port); g. Transportation and storage mark. 6.3 Transportation and storage There shall be rain-proof and moisture-roof measures during transportation and storage of products. 7 Quality assurance periods Under the premise of compliance with the requirements of storage and use by the users, within 12 months from the date of delivery from the manufacturer (subject to invoice date), for any damage or abnormal working indeed caused by defects in manufacturing quality or material, the manufacturer shall be responsible to promptly repair or return the products. Annex A The technical requirements of main positions of the major components (Supplement) A1 The technical requirements of main positions of major components are shown in Table A1. Table A1 Component name Item Requirements Remarks Clamp body 1. Dimensional accuracy of hydraulic cylinder bore 2. Surface roughness of hydraulic cylinder bore 3. Perpendicularity between hydraulic cylinder bore and mounting surface 4. Dimensional accuracy of coupling hole of the fixed friction lining pad Comply with drawing Integral type clamp Piston 1. Dimensional accuracy of piston diameter 2. Surface roughness of piston encircle Ra IT7 0.8µm Wheel cylinder cover 1. Dimensional accuracy of matching diameter of wheel cylinder cover and hydraulic cylinder 2. Dimensional accuracy of O-ring seal groove IT7 In line with the drawing Integral type clamp Friction lining pad Parallelism of two end surfaces of the friction lining pad Not greater than 0.04μm Annex B Calculation method of rotational inertia (Supplement) B1 Calculation of rotational inertia B1.1 When making brake test for double front wheels brake test at the same time, computational formula is as follows. Where. IQ — Rotational inertia when making brake test for double front wheels brake test at the same time, N•m2; G1 — Front axle load at empty-load transport position, N; r — Rolling radius of tire, m; β — Front axle load-transfer coefficient when empty-load braking. B1.2 When Brake test is conducted for single front wheel, computational formula is as follows. Where. IF — Rotational inertia when making brake test for single front wheel, N•m2 Where ψ — Adhesion coefficient of road surface; hg — Height of center of gravity at empty-load transport position, m; b — The distance between center of gravity and rear axle, m. Annex C Records and reports of bench test (Reference) C1 See JB 2805 Annex I for format of recording paper and format of drawing the various curves. Table of Integral machine parameters and brake parameters Vehicle model Manufacturer Exit-factory date Machine quality at empty-load transport position kg Tire type Rolling radius m Axle load distribution. Empty-load transport position, front N Rear N Full-load transport position, front N Rear N Height of center of gravity. At empty-load transport position m At full-load transport position m Position of center of gravity. The distance from the rear axle at empty-load transport position m The distance from the rear axle at full-load transport position m Wheelbase m Maximum speed km/h Brake type. Front Rear Brake manufacturing plant Exit-factory date Driving method of brake. Front Rear Diameter of brake wheel cylinder. Front Rear Maximum brake line pressure MPa Braking force ratio of front and rear axle Rated braking torque. Front N • m Rear N • m Trademark of friction material Manufacturer Exit-factory date The gap between friction lining pad and brake disc. Front mm Rear mm Trademark of brake fluid Manufacturer Exit-factory date Additional explanation This Standard is proposed and administered by Tianjin Research Institute of Construction Machinery of the Ministry of Machinery and Electronics Industry. This Standard is drafted ... ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JB/T 5948-2013_English be delivered?

Answer: Upon your order, we will start to translate JB/T 5948-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JB/T 5948-2013_English with my colleagues?

Answer: Yes. The purchased PDF of JB/T 5948-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JB/T 5948-2013?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JB/T 5948-2013 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.