{"id":5582,"date":"2025-12-22T08:33:37","date_gmt":"2025-12-22T08:33:37","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5582"},"modified":"2025-12-22T08:34:32","modified_gmt":"2025-12-22T08:34:32","slug":"gb-t-3103-3-2020-flat-washer-tolerances-guide","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/id\/blog\/gb-t-3103-3-2020-flat-washer-tolerances-guide\/","title":{"rendered":"Panduan Toleransi Ring Pipih GB\/T 3103.3-2020"},"content":{"rendered":"

[et_pb_section admin_label=”section”]
\n\t\t\t[et_pb_row admin_label=”row”]
\n\t\t\t\t[et_pb_column type=”4_4″][et_pb_text admin_label=”Text”]<\/p>\n

\n

<\/p>\n

Panduan Toleransi Ring Pipih GB\/T 3103.3-2020<\/h1>\n
Toleransi untuk Ring Pipih<\/div>\n

<\/p>\n

\n

1. Pendahuluan<\/h2>\n

Ring pengunci datar memainkan peran penting dalam sistem pengencangan dengan mendistribusikan beban, mencegah kerusakan permukaan, dan memastikan integritas perakitan. Standar GB\/T 3103.3-2020 menetapkan toleransi untuk ring pengunci datar polos dengan diameter nominal dari 1 mm hingga 150 mm, yang berlaku untuk kelas produk A, C, dan F. Standar ini sangat penting untuk menjaga presisi dalam industri teknik mesin, otomotif, kedirgantaraan, dan konstruksi.<\/p>\n

Diadopsi dari ISO 4759-3:2016, panduan ini memastikan kompatibilitas dengan praktik internasional, mempromosikan kontrol kualitas dan kemampuan saling tukar. Panduan ini merinci toleransi untuk lubang dalam, diameter luar, ketebalan, chamfer, dan atribut bentuk\/posisi, membantu para insinyur dalam desain dan pengadaan.<\/p>\n<\/div>\n

<\/p>\n

\n

2. Gambaran Umum Standar GB\/T 3103.3-2020<\/h2>\n

Diterbitkan pada tahun 2020 oleh Badan Standardisasi Tiongkok, standar ini memperbarui versi sebelumnya agar selaras dengan kemajuan global dalam teknologi pengencang. Standar ini berlaku untuk ring polos yang digunakan dengan baut, sekrup, dan mur, kecuali jenis khusus seperti ring pengunci.<\/p>\n

Isi utama mencakup toleransi dimensi sebelum perlakuan permukaan, dengan ketentuan penyimpangan hanya jika dibenarkan secara teknis. Toleransi bentuk dan posisi mengikuti GB\/T 1182 dan GB\/T 16671.<\/p>\n<\/div>\n

<\/p>\n

\n

3. Prinsip Dasar Toleransi Ring Pipih<\/h2>\n

Toleransi memastikan ring pengunci terpasang dengan tepat pada rakitan, mencegah kegagalan akibat ketidaksejajaran atau kelonggaran yang berlebihan. Toleransi didefinisikan untuk tingkatan produk: A (presisi), C (umum), dan F (halus). Kecuali ditentukan lain, toleransi berlaku sebelum perlakuan.<\/p>\n

Parameter kunci meliputi diameter dalam (d)1<\/sub>), diameter luar (d2<\/sub>), ketebalan (t), kemiringan (c)1<\/sub>, C2<\/sub>), dan toleransi bentuk seperti koaksialitas dan kerataan.<\/p>\n<\/div>\n

<\/p>\n

\n

4. Spesifikasi Toleransi Terperinci<\/h2>\n
4.1 Lubang Dalam d1<\/sub><\/div>\n

 <\/p>\n

Toleransi untuk lubang bagian dalam d1<\/sub> bervariasi tergantung ketebalan dan kualitas produk.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Ketebalan<\/th>\nToleransi<\/th>\n<\/tr>\n
Tingkat Produk<\/th>\n<\/tr>\n
F<\/th>\nA<\/th>\nC<\/th>\n<\/tr>\n<\/thead>\n
t < 2
\n2 \u2264 t < 4
\nt \u2265 4<\/td>\n		D1<\/sub>
\nToleransi<\/td>\n		T1<\/sub>
\nmenit<\/td>\n		e1<\/sub>
\nmaksimal<\/td>\n		D1<\/sub>
\nToleransi<\/td>\n		T1<\/sub>
\nmenit<\/td>\n		e1<\/sub>
\nmaksimal<\/td>\n		D1<\/sub>
\nToleransi<\/td>\n<\/tr>\n
H12<\/td>\n0,5 ton<\/td>\n0,10 ton<\/td>\nH13<\/td>\n0,3 ton<\/td>\n0,15 ton<\/td>\nH14<\/td>\n<\/tr>\n
H12<\/td>\n0,3 ton<\/td>\n0,15 ton<\/td>\nH13<\/td>\n0,25 ton<\/td>\n0,20 ton<\/td>\nH14<\/td>\n<\/tr>\n
H13<\/td>\n0,2 ton<\/td>\n0,20 ton<\/td>\nH14<\/td>\n0,2 ton<\/td>\n0,25 ton<\/td>\nH15<\/td>\n<\/tr>\n
Pembakaran tidak didefinisikan tetapi diperbolehkan.<\/td>\nPita sobek (e)1<\/sub>), T1<\/sub> dan pembakaran tidak didefinisikan tetapi diperbolehkan<\/td>\n<\/tr>\n
T1<\/sub> adalah bagian lubang yang berada dalam toleransi d yang ditentukan1<\/sub><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.2 Diameter Luar d2<\/sub><\/div>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Ketebalan<\/th>\nToleransi<\/th>\n<\/tr>\n
Tingkat Produk<\/th>\n<\/tr>\n
F<\/th>\nA<\/th>\nC<\/th>\n<\/tr>\n<\/thead>\n
t < 2
\n2 \u2264 t < 4
\nt \u2265 4<\/td>\n		D2<\/sub>
\nToleransi<\/td>\n		e2<\/sub>
\nmaksimal<\/td>\n		D2<\/sub>
\nToleransi<\/td>\n		e2<\/sub>
\nmaksimal<\/td>\n		D2<\/sub>
\nToleransi<\/td>\n<\/tr>\n
h13<\/td>\n0,13 ton<\/td>\nh14<\/td>\n0,18 ton<\/td>\nh16<\/td>\n<\/tr>\n
h13<\/td>\n0,15 ton<\/td>\nh14<\/td>\n0,20 ton<\/td>\nh16<\/td>\n<\/tr>\n
h14<\/td>\n0,18 ton<\/td>\nh15<\/td>\n0,25 ton<\/td>\nh16<\/td>\n<\/tr>\n
Burring dan t2<\/sub> tidak didefinisikan tetapi diperbolehkan<\/td>\nPita sobek (e)2<\/sub>), T2<\/sub> dan pembakaran tidak didefinisikan tetapi diperbolehkan<\/td>\n<\/tr>\n
T2<\/sub> adalah bagian dari diameter luar yang berada dalam toleransi yang ditentukan sebesar d.2<\/sub><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.3 Ketebalan t<\/div>\n

Toleransi ketebalan diukur setelah penghilangan gerinda.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Ketebalan t<\/th>\nTingkat Produk<\/th>\n<\/tr>\n
F<\/th>\nA<\/th>\nC<\/th>\n<\/tr>\n<\/thead>\n
t \u2264 0,5<\/td>\n\u00b10,04<\/td>\n\u00b10,05<\/td>\n\u00b10,10<\/td>\n<\/tr>\n
0,5 < t \u2264 1<\/td>\n\u00b10,06<\/td>\n\u00b10,10<\/td>\n\u00b10,20<\/td>\n<\/tr>\n
1 < t \u2264 2,5<\/td>\n\u00b10,12<\/td>\n\u00b10,20<\/td>\n\u00b10,30<\/td>\n<\/tr>\n
2,5 < t \u2264 4<\/td>\n\u00b10,16<\/td>\n\u00b10,30<\/td>\n\u00b10,60<\/td>\n<\/tr>\n
4 < t \u2264 6<\/td>\n\u00b10,20<\/td>\n\u00b10,60<\/td>\n\u00b11,00<\/td>\n<\/tr>\n
6 < t \u2264 10<\/td>\n\u00b10,24<\/td>\n\u00b11,00<\/td>\n\u00b11,20<\/td>\n<\/tr>\n
10 < t \u2264 20<\/td>\n\u00b10,28<\/td>\n\u00b11,20<\/td>\n\u00b11,60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.4 Sudut Miring<\/div>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n
Ketebalan Nominal<\/th>\nTingkat Produk<\/th>\n<\/tr>\n
F<\/th>\nA<\/th>\nC<\/th>\n<\/tr>\n
C1<\/sub>
\nmenit<\/th>\n		C2<\/sub>
\nmenit<\/th>\n		C1<\/sub>
\nmenit<\/th>\n		C2<\/sub>
\nmenit<\/th>\n		C1<\/sub>
\nmenit<\/th>\n		C2<\/sub>
\nmenit<\/th>\n<\/tr>\n<\/thead>\n
1 \u2264 t < 2<\/td>\n0,20 ton<\/td>\n0,25 ton<\/td>\n0,20 ton<\/td>\n0,25 ton<\/td>\n0,20 ton<\/td>\n0,25 ton<\/td>\n<\/tr>\n
2 \u2264 t < 4<\/td>\n0,18 ton<\/td>\n0,22 ton<\/td>\n0,18 ton<\/td>\n0,22 ton<\/td>\n0,18 ton<\/td>\n0,22 ton<\/td>\n<\/tr>\n
t \u2265 4<\/td>\n0,15 ton<\/td>\n0,20 ton<\/td>\n0,15 ton<\/td>\n0,20 ton<\/td>\n0,15 ton<\/td>\n0,20 ton<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.4.3 Persyaratan Tambahan untuk Ring Kombinasi<\/div>\n

Atas permintaan pembeli, posisi chamfer relatif terhadap penyimpangan stamping harus ditentukan dalam pesanan.<\/p>\n

4.5 Toleransi Bentuk dan Posisi<\/div>\n

\u0394t berlaku di luar x = 0,1 (d2<\/sub> - D1<\/sub>), yaitu, lebar cincin 60%.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ketebalan t<\/th>\nTingkat Produk<\/th>\n<\/tr>\n
F<\/th>\nA<\/th>\nC<\/th>\n<\/tr>\n
\u0394t
\nmaksimal<\/th>\n		\u0394t
\nmaksimal<\/th>\n		<\/th>\n<\/tr>\n<\/thead>\n
t \u2264 0,5<\/td>\n0.02<\/td>\n0.025<\/td>\nTidak ada persyaratan<\/td>\n<\/tr>\n
0,5 < t \u2264 1<\/td>\n0.03<\/td>\n0.05<\/td>\n<\/tr>\n
1 < t \u2264 2,5<\/td>\n0.06<\/td>\n0.1<\/td>\n<\/tr>\n
2,5 < t \u2264 4<\/td>\n0.08<\/td>\n0.15<\/td>\n<\/tr>\n
4 < t \u2264 6<\/td>\n0.1<\/td>\n0.2<\/td>\n<\/tr>\n
6 < t \u2264 10<\/td>\n0.12<\/td>\n0.3<\/td>\n<\/tr>\n
10 < t \u2264 20<\/td>\n0.14<\/td>\n0.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.5.2 Koaksialitas y<\/div>\n\n\n\n\n\n\n\n\n\n\n
Ketebalan t<\/th>\nTingkat Produk<\/th>\n<\/tr>\n
F<\/th>\nA<\/th>\nC<\/th>\n<\/tr>\n
y
\nmaksimal<\/th>\n		y
\nmaksimal<\/th>\n		y
\nmaksimal<\/th>\n<\/tr>\n<\/thead>\n
t < 2<\/td>\n2 IT11<\/td>\n2 IT12<\/td>\n2 IT13<\/td>\n<\/tr>\n
2 \u2264 t \u2264 4<\/td>\n2 IT12<\/td>\n2 IT13<\/td>\n2 IT14<\/td>\n<\/tr>\n
t \u2265 4<\/td>\n2 IT13<\/td>\n2 IT14<\/td>\n2 IT15<\/td>\n<\/tr>\n
Toleransi y berdasarkan diameter d2<\/sub><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.5.3 Kerataan (Defleksi) z<\/div>\n

Kerataan z adalah selisih antara tinggi efektif hefisien<\/sub> dan ketebalan efektif tefisien<\/sub>Catatan: Tidak bergantung pada toleransi ketebalan; proses tambahan seperti penggerindaan dapat mengurangi defleksi. Diukur setelah penghilangan gerinda.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ketebalan t<\/th>\nTingkat Produk<\/th>\n<\/tr>\n
F<\/th>\nA<\/th>\nC<\/th>\n<\/tr>\n
z
\nmaksimal<\/th>\n		z
\nmaksimal<\/th>\n		z
\nmaksimal<\/th>\n<\/tr>\n<\/thead>\n
t \u2264 0,5<\/td>\n0.07<\/td>\n0.1<\/td>\n0.13<\/td>\n<\/tr>\n
0,5 < t \u2264 1<\/td>\n0.1<\/td>\n0.15<\/td>\n0.2<\/td>\n<\/tr>\n
1 < t \u2264 2,5<\/td>\n0.2<\/td>\n0.2<\/td>\n0.25<\/td>\n<\/tr>\n
2,5 < t \u2264 4<\/td>\n0.3<\/td>\n0.3<\/td>\n0.3<\/td>\n<\/tr>\n
4 < t \u2264 6<\/td>\n0.4<\/td>\n0.4<\/td>\n0.4<\/td>\n<\/tr>\n
6 < t \u2264 10<\/td>\n0.6<\/td>\n0.6<\/td>\n0.6<\/td>\n<\/tr>\n
10 < t \u2264 20<\/td>\n1<\/td>\n1<\/td>\n1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

\n

5. Persyaratan Utama dalam GB\/T 3103.3-2020<\/h2>\n

Toleransi harus diverifikasi sebelum perlakuan permukaan. Standar produk diutamakan jika terdapat perbedaan. Pengukuran ketebalan dan kerataan dilakukan setelah penghilangan gerinda untuk memastikan keakuratan.<\/p>\n<\/div>\n

<\/p>\n

\n

6. Analisis Presisi dan Kesalahan<\/h2>\n

Kesalahan dapat muncul dari proses manufaktur seperti pencetakan, yang menyebabkan masalah gerinda atau koaksialitas. Tingkatkan akurasi melalui perkakas yang presisi dan pasca-pemrosesan. Kesalahan umum termasuk mengabaikan spesifikasi chamfer; atasi dengan mengikuti tabel khusus untuk setiap grade.<\/p>\n<\/div>\n

<\/p>\n

\n

7. Dampak GB\/T 3103.3-2020 terhadap Industri<\/h2>\n

Standar ini meningkatkan penelitian material dengan menstandarisasi toleransi, membantu pengendalian mutu dalam manufaktur, dan mendukung aplikasi di sektor presisi tinggi seperti kedirgantaraan, di mana ring pengunci kelas A memastikan keandalan.<\/p>\n<\/div>\n

<\/p>\n

\n

8. Pertanyaan yang Sering Diajukan (FAQ)<\/h2>\n
\n

Apa perbedaan antara kualitas produk kelas A, C, dan F?<\/h3>\n

Kelas A menawarkan toleransi paling ketat untuk aplikasi presisi, C untuk penggunaan umum, dan F untuk toleransi halus dalam skenario spesifik, seperti yang dijelaskan dalam tabel.<\/p>\n<\/div>\n

\n

Kapan toleransi harus diukur?<\/h3>\n

Toleransi diterapkan sebelum perlakuan permukaan, dengan ketebalan dan kerataan diukur setelah penghilangan gerinda untuk menghindari ketidakakuratan akibat artefak manufaktur.<\/p>\n<\/div>\n

\n

Bagaimana standar ini dibandingkan dengan ISO 4759-3?<\/h3>\n

GB\/T 3103.3-2020 setara dengan ISO 4759-3:2016, memastikan kompatibilitas global untuk toleransi pada ring datar.<\/p>\n<\/div>\n

\n

Bagaimana jika standar produk berbeda dari ini?<\/h3>\n

Standar khusus produk diutamakan, tetapi penyimpangan memerlukan justifikasi teknis.<\/p>\n<\/div>\n

\n

Apakah pembuatan chamfer wajib?<\/h3>\n

Sudut kemiringan minimum ditentukan untuk mencegah tepi tajam, dengan nilai berdasarkan ketebalan dan mutu; untuk ring pengunci gabungan, posisi mungkin perlu ditentukan.<\/p>\n<\/div>\n

\n

Bagaimana cara memilih tingkatan kelas yang tepat untuk sebuah aplikasi?<\/h3>\n

Pilih berdasarkan presisi perakitan: A untuk komponen kritis beban tinggi, C untuk pengencangan baut standar, dengan mempertimbangkan faktor-faktor seperti getaran dan distribusi beban.<\/p>\n<\/div>\n<\/div>\n

<\/div>\n

<\/p>\n<\/div>\n

[\/et_pb_text][\/et_pb_column]
\n\t\t\t[\/et_pb_row]
\n\t\t[\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"

GB\/T 3103.3-2020 Flat Washer Tolerances Guide Tolerances for Flat Washers 1. Introduction Flat washers play a critical role in fastening systems by distributing loads, preventing surface damage, and ensuring assembly integrity. The GB\/T 3103.3-2020 standard specifies tolerances for plain flat washers with nominal diameters from 1 mm to 150 mm, applicable to product grades A, […]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"

\r\n\r\n\r\n

GB\/T 3103.3-2020 Flat Washer Tolerances Guide<\/h1>\r\n
Tolerances for Flat Washers<\/div>\r\n\r\n
\r\n

1. Introduction<\/h2>\r\nFlat washers play a critical role in fastening systems by distributing loads, preventing surface damage, and ensuring assembly integrity. The GB\/T 3103.3-2020 standard specifies tolerances for plain flat washers with nominal diameters from 1 mm to 150 mm, applicable to product grades A, C, and F. This standard is essential for maintaining precision in mechanical engineering, automotive, aerospace, and construction industries.\r\n\r\nAdopted from ISO 4759-3:2016, it ensures compatibility with international practices, promoting quality control and interchangeability. This guide details tolerances for inner hole, outer diameter, thickness, chamfers, and form\/position attributes, aiding engineers in design and procurement.\r\n\r\n<\/div>\r\n\r\n
\r\n

2. GB\/T 3103.3-2020 Standard Overview<\/h2>\r\nReleased in 2020 by the Standardization Administration of China, this standard updates previous versions to align with global advancements in fastener technology. It applies to plain washers used with bolts, screws, and nuts, excluding special types like lock washers.\r\n\r\nKey content includes dimensional tolerances before surface treatment, with provisions for deviations only when technically justified. Shape and position tolerances follow GB\/T 1182 and GB\/T 16671.\r\n\r\n<\/div>\r\n\r\n
\r\n

3. Basic Principles of Flat Washer Tolerances<\/h2>\r\nTolerances ensure washers fit precisely in assemblies, preventing failures due to misalignment or excessive play. They are defined for product grades: A (precision), C (general), and F (fine). Unless specified otherwise, tolerances apply pre-treatment.\r\n\r\nKey parameters include inner diameter (d1<\/sub>), outer diameter (d2<\/sub>), thickness (t), chamfers (c1<\/sub>, c2<\/sub>), and form tolerances like coaxiality and flatness.\r\n\r\n<\/div>\r\n\r\n
\r\n

4. Detailed Tolerance Specifications<\/h2>\r\n
4.1 Inner Hole d1<\/sub><\/div>\r\n \r\n

Tolerances for inner hole d1<\/sub> vary by thickness and product grade.<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Thickness<\/th>\r\nTolerances<\/th>\r\n<\/tr>\r\n
Product Grade<\/th>\r\n<\/tr>\r\n
F<\/th>\r\nA<\/th>\r\nC<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
t < 2\r\n2 \u2264 t < 4\r\nt \u2265 4<\/td>\r\nd1<\/sub>\r\nTolerance<\/td>\r\nt1<\/sub>\r\nmin<\/td>\r\ne1<\/sub>\r\nmax<\/td>\r\nd1<\/sub>\r\nTolerance<\/td>\r\nt1<\/sub>\r\nmin<\/td>\r\ne1<\/sub>\r\nmax<\/td>\r\nd1<\/sub>\r\nTolerance<\/td>\r\n<\/tr>\r\n
H12<\/td>\r\n0.5 t<\/td>\r\n0.10 t<\/td>\r\nH13<\/td>\r\n0.3 t<\/td>\r\n0.15 t<\/td>\r\nH14<\/td>\r\n<\/tr>\r\n
H12<\/td>\r\n0.3 t<\/td>\r\n0.15 t<\/td>\r\nH13<\/td>\r\n0.25 t<\/td>\r\n0.20 t<\/td>\r\nH14<\/td>\r\n<\/tr>\r\n
H13<\/td>\r\n0.2 t<\/td>\r\n0.20 t<\/td>\r\nH14<\/td>\r\n0.2 t<\/td>\r\n0.25 t<\/td>\r\nH15<\/td>\r\n<\/tr>\r\n
Burring not defined but permitted<\/td>\r\nTear band (e1<\/sub>), t1<\/sub> and burring not defined but permitted<\/td>\r\n<\/tr>\r\n
t1<\/sub> is the portion of the hole within the specified tolerance of d1<\/sub><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n
4.2 Outer Diameter d2<\/sub><\/div>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Thickness<\/th>\r\nTolerances<\/th>\r\n<\/tr>\r\n
Product Grade<\/th>\r\n<\/tr>\r\n
F<\/th>\r\nA<\/th>\r\nC<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
t < 2\r\n2 \u2264 t < 4\r\nt \u2265 4<\/td>\r\nd2<\/sub>\r\nTolerance<\/td>\r\ne2<\/sub>\r\nmax<\/td>\r\nd2<\/sub>\r\nTolerance<\/td>\r\ne2<\/sub>\r\nmax<\/td>\r\nd2<\/sub>\r\nTolerance<\/td>\r\n<\/tr>\r\n
h13<\/td>\r\n0.13 t<\/td>\r\nh14<\/td>\r\n0.18 t<\/td>\r\nh16<\/td>\r\n<\/tr>\r\n
h13<\/td>\r\n0.15 t<\/td>\r\nh14<\/td>\r\n0.20 t<\/td>\r\nh16<\/td>\r\n<\/tr>\r\n
h14<\/td>\r\n0.18 t<\/td>\r\nh15<\/td>\r\n0.25 t<\/td>\r\nh16<\/td>\r\n<\/tr>\r\n
Burring and t2<\/sub> not defined but permitted<\/td>\r\nTear band (e2<\/sub>), t2<\/sub> and burring not defined but permitted<\/td>\r\n<\/tr>\r\n
t2<\/sub> is the portion of the outer diameter within the specified tolerance of d2<\/sub><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n
4.3 Thickness t<\/div>\r\n

Thickness tolerances measured after deburring.<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Thickness t<\/th>\r\nProduct Grade<\/th>\r\n<\/tr>\r\n
F<\/th>\r\nA<\/th>\r\nC<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
t \u2264 0.5<\/td>\r\n\u00b10.04<\/td>\r\n\u00b10.05<\/td>\r\n\u00b10.10<\/td>\r\n<\/tr>\r\n
0.5 < t \u2264 1<\/td>\r\n\u00b10.06<\/td>\r\n\u00b10.10<\/td>\r\n\u00b10.20<\/td>\r\n<\/tr>\r\n
1 < t \u2264 2.5<\/td>\r\n\u00b10.12<\/td>\r\n\u00b10.20<\/td>\r\n\u00b10.30<\/td>\r\n<\/tr>\r\n
2.5 < t \u2264 4<\/td>\r\n\u00b10.16<\/td>\r\n\u00b10.30<\/td>\r\n\u00b10.60<\/td>\r\n<\/tr>\r\n
4 < t \u2264 6<\/td>\r\n\u00b10.20<\/td>\r\n\u00b10.60<\/td>\r\n\u00b11.00<\/td>\r\n<\/tr>\r\n
6 < t \u2264 10<\/td>\r\n\u00b10.24<\/td>\r\n\u00b11.00<\/td>\r\n\u00b11.20<\/td>\r\n<\/tr>\r\n
10 < t \u2264 20<\/td>\r\n\u00b10.28<\/td>\r\n\u00b11.20<\/td>\r\n\u00b11.60<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n
4.4 Chamfers<\/div>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Nominal Thickness<\/th>\r\nProduct Grade<\/th>\r\n<\/tr>\r\n
F<\/th>\r\nA<\/th>\r\nC<\/th>\r\n<\/tr>\r\n
c1<\/sub>\r\nmin<\/th>\r\nc2<\/sub>\r\nmin<\/th>\r\nc1<\/sub>\r\nmin<\/th>\r\nc2<\/sub>\r\nmin<\/th>\r\nc1<\/sub>\r\nmin<\/th>\r\nc2<\/sub>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
1 \u2264 t < 2<\/td>\r\n0.20 t<\/td>\r\n0.25 t<\/td>\r\n0.20 t<\/td>\r\n0.25 t<\/td>\r\n0.20 t<\/td>\r\n0.25 t<\/td>\r\n<\/tr>\r\n
2 \u2264 t < 4<\/td>\r\n0.18 t<\/td>\r\n0.22 t<\/td>\r\n0.18 t<\/td>\r\n0.22 t<\/td>\r\n0.18 t<\/td>\r\n0.22 t<\/td>\r\n<\/tr>\r\n
t \u2265 4<\/td>\r\n0.15 t<\/td>\r\n0.20 t<\/td>\r\n0.15 t<\/td>\r\n0.20 t<\/td>\r\n0.15 t<\/td>\r\n0.20 t<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n
4.4.3 Combined Washers Supplementary Requirements<\/div>\r\nUpon buyer request, chamfer position relative to stamping deviations should be specified in the order.\r\n
4.5 Form and Position Tolerances<\/div>\r\n

\u0394t applies outside x = 0.1 (d2<\/sub> - d1<\/sub>), i.e., 60% of ring width.<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Thickness t<\/th>\r\nProduct Grade<\/th>\r\n<\/tr>\r\n
F<\/th>\r\nA<\/th>\r\nC<\/th>\r\n<\/tr>\r\n
\u0394t\r\nmax<\/th>\r\n\u0394t\r\nmax<\/th>\r\n<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
t \u2264 0.5<\/td>\r\n0.02<\/td>\r\n0.025<\/td>\r\nNo requirement<\/td>\r\n<\/tr>\r\n
0.5 < t \u2264 1<\/td>\r\n0.03<\/td>\r\n0.05<\/td>\r\n<\/tr>\r\n
1 < t \u2264 2.5<\/td>\r\n0.06<\/td>\r\n0.1<\/td>\r\n<\/tr>\r\n
2.5 < t \u2264 4<\/td>\r\n0.08<\/td>\r\n0.15<\/td>\r\n<\/tr>\r\n
4 < t \u2264 6<\/td>\r\n0.1<\/td>\r\n0.2<\/td>\r\n<\/tr>\r\n
6 < t \u2264 10<\/td>\r\n0.12<\/td>\r\n0.3<\/td>\r\n<\/tr>\r\n
10 < t \u2264 20<\/td>\r\n0.14<\/td>\r\n0.4<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n
4.5.2 Coaxiality y<\/div>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Thickness t<\/th>\r\nProduct Grade<\/th>\r\n<\/tr>\r\n
F<\/th>\r\nA<\/th>\r\nC<\/th>\r\n<\/tr>\r\n
y\r\nmax<\/th>\r\ny\r\nmax<\/th>\r\ny\r\nmax<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
t < 2<\/td>\r\n2 IT11<\/td>\r\n2 IT12<\/td>\r\n2 IT13<\/td>\r\n<\/tr>\r\n
2 \u2264 t \u2264 4<\/td>\r\n2 IT12<\/td>\r\n2 IT13<\/td>\r\n2 IT14<\/td>\r\n<\/tr>\r\n
t \u2265 4<\/td>\r\n2 IT13<\/td>\r\n2 IT14<\/td>\r\n2 IT15<\/td>\r\n<\/tr>\r\n
Tolerance y based on diameter d2<\/sub><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n
4.5.3 Flatness (Deflection) z<\/div>\r\n

Flatness z is the difference between effective height heff<\/sub> and effective thickness teff<\/sub>. Note: Independent of thickness tolerance; additional processes like grinding may reduce deflection. Measured after deburring.<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Thickness t<\/th>\r\nProduct Grade<\/th>\r\n<\/tr>\r\n
F<\/th>\r\nA<\/th>\r\nC<\/th>\r\n<\/tr>\r\n
z\r\nmax<\/th>\r\nz\r\nmax<\/th>\r\nz\r\nmax<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
t \u2264 0.5<\/td>\r\n0.07<\/td>\r\n0.1<\/td>\r\n0.13<\/td>\r\n<\/tr>\r\n
0.5 < t \u2264 1<\/td>\r\n0.1<\/td>\r\n0.15<\/td>\r\n0.2<\/td>\r\n<\/tr>\r\n
1 < t \u2264 2.5<\/td>\r\n0.2<\/td>\r\n0.2<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
2.5 < t \u2264 4<\/td>\r\n0.3<\/td>\r\n0.3<\/td>\r\n0.3<\/td>\r\n<\/tr>\r\n
4 < t \u2264 6<\/td>\r\n0.4<\/td>\r\n0.4<\/td>\r\n0.4<\/td>\r\n<\/tr>\r\n
6 < t \u2264 10<\/td>\r\n0.6<\/td>\r\n0.6<\/td>\r\n0.6<\/td>\r\n<\/tr>\r\n
10 < t \u2264 20<\/td>\r\n1<\/td>\r\n1<\/td>\r\n1<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n\r\n
\r\n

5. Key Requirements in GB\/T 3103.3-2020<\/h2>\r\nTolerances must be verified pre-surface treatment. Product standards take precedence if differing. Measurements for thickness and flatness occur post-deburring to ensure accuracy.\r\n\r\n<\/div>\r\n\r\n
\r\n

6. Precision and Error Analysis<\/h2>\r\nErrors may arise from manufacturing processes like stamping, leading to burring or coaxiality issues. Improve accuracy via precise tooling and post-processing. Common errors include ignoring chamfer specs; resolve by adhering to grade-specific tables.\r\n\r\n<\/div>\r\n\r\n
\r\n

7. Impact of GB\/T 3103.3-2020 on Industry<\/h2>\r\nThis standard enhances material research by standardizing tolerances, aids quality control in manufacturing, and supports applications in high-precision sectors like aerospace, where grade A washers ensure reliability.\r\n\r\n<\/div>\r\n\r\n
\r\n

8. Frequently Asked Questions (FAQ)<\/h2>\r\n
\r\n

What is the difference between product grades A, C, and F?<\/h3>\r\nGrade A offers the tightest tolerances for precision applications, C for general use, and F for fine tolerances in specific scenarios, as detailed in the tables.\r\n\r\n<\/div>\r\n
\r\n

When should tolerances be measured?<\/h3>\r\nTolerances apply before surface treatment, with thickness and flatness measured after deburring to avoid inaccuracies from manufacturing artifacts.\r\n\r\n<\/div>\r\n
\r\n

How does this standard compare to ISO 4759-3?<\/h3>\r\nGB\/T 3103.3-2020 is equivalent to ISO 4759-3:2016, ensuring global compatibility for tolerances on flat washers.\r\n\r\n<\/div>\r\n
\r\n

What if product standards differ from this?<\/h3>\r\nProduct-specific standards take precedence, but deviations require technical justification.\r\n\r\n<\/div>\r\n
\r\n

Are chamfers mandatory?<\/h3>\r\nMinimum chamfers are specified to prevent sharp edges, with values based on thickness and grade; for combined washers, position may need specification.\r\n\r\n<\/div>\r\n
\r\n

How to select the appropriate grade for an application?<\/h3>\r\nChoose based on assembly precision: A for high-load critical parts, C for standard bolting, considering factors like vibration and load distribution.\r\n\r\n<\/div>\r\n<\/div>\r\n
<\/div>\r\n\r\n\r\n<\/div>","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5582","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/posts\/5582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/comments?post=5582"}],"version-history":[{"count":3,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/posts\/5582\/revisions"}],"predecessor-version":[{"id":5586,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/posts\/5582\/revisions\/5586"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/media?parent=5582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/categories?post=5582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/tags?post=5582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}