SIK/SAK Maintenance-Free Self-Lubricating Rod End Bearings

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SIK/SAK Maintenance-Free Self-Lubricating Rod End Bearings

This is a maintenance-free, self-lubricating rod end bearing. The rod end body is made of carbon steel and galvanized for rust prevention; the outer ring has a bronze base with PTFE composite material precisely lined on the sliding surface for continuous self-lubrication; the inner ring is made of bearing steel, integrally quenched and then spherically hard chrome plated to ensure high wear resistance.

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Product Number: 
·SIK…C 5～20
·SAK…C 5～20
Sliding Friction Pair: Steel / PTFE Composite Material
Operating Temperature Range: -50℃～＋150℃
Customization Options:
·Thread Customization: Products with different pitches or special thread precision can be provided upon request.
·Left-hand Thread: Left-hand threads require "L" and "Left" to be added after the model number and thread marking. Example:
·Internal Thread: SILK20C M20×1.5 Left 6H
·External Thread: SALK20C M20×1.5 Left 6g

Beaing
number		 Dimensions
 mm/inch		 Load ratings
kN		 Weight
≈kg
d B dₖ C₁
max		 d₂ G
6H		 h₁ I₃
min		 I₄ I₅ I₇ W d₃ d₄ rₛ 
min		 α°
≈		 Dynamic Static
SIK5C 5  8  11.112  6  19.5  M5 30  12  39.8  5  9.5  10  10  13  0.3  4  3.6  4.6 0.024 
SIKBC 8  9  12.7  7.5  21.2  M6 30  40.7  5  11  10  10  13  0.3  9  4.7  5.2  0.028 
SIKBC 8  12  15.88  9.5  25.5  M8 36  12  4B. 5  13  13  12.5  16  0.3  12  7.6  8.2  0.053 
SIK10C 10  14  19.05  11.5  31  M10 43  19  58.6  6.5  16  16  15  19  0.3  10  12  15  0.11 
SIK12C 12  16  2223  12.5  34  M12 50  23  67  6.5  18  18  17.5  22  0.3  12  14  19  0.14 
SIK14C 14  19  25.4  14.5  38  M14 57  23  76  B 20  21  20  25  0.3  14  19  24  0.20 
SIK18C 16  21  28.58  15.5  42  M16 64  24  85  B 21  24  22  27  0.3  14  23  29  0.25 
SIK1BC 18  23  31.75  17.5  48  M18×1.5 71  27  94  10  22.5  27  25  31  0.6  13  29  34  0.35 
SIK20C 20  25  34.93  18.5  50  M20×1.5 77  30  102  10  25  30  27.5  34  0.6  14  34  40  0.43 

Bearing
number		 Dimensions
 mm/inch		 Load ratings
kN		 Weight
≈kg
d B dₖ C₁
max		 d₂ G
6g		 h I₁
min		 I₂ I₇ rₛ 
min		 α°
≈		 Dynamic Static
SAK5C 5  8  11.112  8  19.5  M5 33  19  428  - 0.3  4  3.6  3.9  0.017 
SAKBC 6  9  12.7  7.5  21.2  M6 36  21  48.7  - 0.3  9  4.7  5.2  0.023 
SAKaC 8  12  15.88  9.5  25.5  M8 42  25  54.8  - 0.3  12  7.6  8.2  0.047 
SAK10C 10  14  19.05  115  31  M10 48  2B 63.6  - 0.3  10  12  15  0.085 
SAK12C 12  16  2223  12.5  34  M12 54  32  71  - 0.3  12  14  19  0.12 
SAK14C 14  19  25.4  14.5  38  M14 80  36  79  - 0.3  14  19  24  0.17 
SAK18C 16  21  28.58  15.5  42  M16 66  37  87  - 0.3  14  23  29  0.23 
SAK18C 18  23  31.75  17.5  48  M18×1.5 72  41  95  - 0.6  13  29  34  0.31 
SAK20C 20  25  34.93  18.5  50  M20×1.5 78  45  103  27.5  0.6  14  34  40  0.40 

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About UKL
Founded in 2020, UKL Bearing Manufacturing Co., Ltd. (Wuxi) is China SIK/SAK Maintenance-Free Self-Lubricating Rod End Bearings suppliers and OEM/ODM SIK/SAK Maintenance-Free Self-Lubricating Rod End Bearings company, an integrated industrial and trading enterprise that focuses on precision manufacturing, combining R&D, production, and sales.
The company specializes in high-performance bearing solutions, providing technical support for global industries with exceptionally high demands for precision and reliability.

With more than 200 skilled professionals and a fully modernized production base, UKL’s facilities cover the entire manufacturing process — forging, annealing, turning, heat treatment, grinding, and automated assembly.
Leveraging over 15 years of OEM/ODM export experience, UKL responds quickly to customer needs, offering flexible and customized services for clients across Europe, Asia, Africa, and the Middle East.

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