RCH121, 12 Ton Capacity,42mm Stroke, Single-Acting Spring-Retraction Hollow Hydraulic
The RCH series from RIVERLAKE is a high-performance range of single-acting, spring-return hollow hydraulic cylinders engineered for demanding industrial applications. Combining robust construction with advanced surface treatments and thoughtful design details, these cylinders deliver exceptional reliability, corrosion resistance, and operational flexibility.
Description
Series: RCH | Product Line: Industrial Tools
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Advanced Surface Treatment – The cylinder body, piston, and stop ring undergo a gas nitriding + post-oxidation process, providing excellent wear resistance, self-lubrication, and superior corrosion protection.
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Topcoat Painting – A final paint coating enhances visual identification and further improves overall corrosion resistance.
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External Thread Protector (Nylon) – Made of reinforced nylon, it effectively shields the cylinder’s external ring thread from damage during handling and use.
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Hollow Plunger Design – Enables both pulling and pushing force applications, maximizing versatility.
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Single-Acting, Spring Return – Simple, safe, and reliable operation with automatic retraction.
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G80 High-Strength Lifting Ring (Large Tonnage Models) – Certified lifting rings ensure secure and easy transport of heavy cylinders.
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Standard Quick Coupling & Dust Cap – All models come standard with CEJN quick couplers and protective dust caps for fast, clean connections.
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Base Mounting Holes – Provided on all models for stable and secure installation.
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Polyurethane Seals – Deliver superior sealing performance, high wear resistance, and extended service life.
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Threaded Hollow Piston – Allows mounting of custom saddles or adapters to suit a wide range of specialized applications.
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Industrial-Grade Wiper Seal – Minimizes contamination ingress, significantly extending hydraulic cylinder life.
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All-Weather Protection – From internal components to external finishes, the RCH series is built to perform reliably in harsh environments, indoors and out.
Design
- Removable hard saddle to prevent damage to the piston when in contact with rough surfaces.
- The piston rod adopts gas nitriding treatment,featuring excellent wear resistance and corrosion resistance.
- Powerful spring for rapid return stroke.
- The Swedish CEJN coupler and dust cap ensure safety throughout.
- Dust seal, preventing external impurities from entering the interior of the cylinder and causing contamination or damage.
- The gas-nitrided stop ring is used to absorb eccentric load and prevent plunger over-travel.
- The cylinder body is treated by gas nitriding plus post-oxidation process,followsed by external baked painting to deliver superior corrosion resistance
- Dust seal, preventing external impurities from entering the interior of the cylinder and causing contamination or damage.
- High-pressure seal to achieve zero internal leakage in the hydraulic system, reducing wear and extending service life.
Specifications
| Maximum Operating Pressure (bar) | 700 |
| Capacity Class (tonnage) | 12 |
| Stroke (mm) | 42 |
| Collapsed Height/mm | 120 |
| Extended Height/mm | 162 |
| Return Type | Single-Acting, Spring Return |
| Cylinder Effective(cm2) | 17.9 |
| Oil Capacity(cm3) | 75 |
| Surface Treatment | All components undergo gas nitriding and post-oxidation process,cylinder body come with an extra baked paint coating layer. |
| Coupler | CEJN 3/8NPT-18 |
| Weight (kg) | 2.8 |
Dimensions
| Collapsed Height/mm(A) | 120 |
| Extended Height/mm(B) | 162 |
| Cylinder Outside Dia/mm(C) | 70 |
| Cylinder Inner Dia/mm(D) | 54.1 |
| Plunger Dia/mm(E) | 35.1 |
| Base To Advance Port/mm(F) | 25 |
| Saddle Dia/mm(H) | * |
| Saddle Protri. From Plgr./mm(J) | * |
| Center Hole Dia/mm(R) | 19.5 |
Series Comparison
| Model Number | Capacity/Ton（kN) | Stroke/mm | Cylinder Effective Area/cm2 | Oil Capacity/cm3 | Collapsed Height/mm(A) | Extended Height/mm(B) | Cylinder Outside Dia/mm(C) | Cylinder Inner Dia/mm(D) | Plunger Dia/mm(E) | Base To Advance Port/mm(F) | Saddle Dia/mm(H) | Saddle Protri. From Plgr./mm(J) | Plunger Internal Thread (P) | Plunger Thread Length/mm(N) | Collar Thread(M) | Collar Thread Length(Q)/mm | Center Hole Dia/mm(R) | Base Mounting Hole Bolt Circle/mm(U) | Base Mounting Hole Thread(V) | Base Mounting Hole Thread Depth/mm(Y) | Weight/Kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RCH120 | 12(125) | 8 | 17.9 | 14 | 55 | 63 | 70 | 54.1 | 35.1 | 9 | * | * | 3/4”-16UN | 16 | 2 3/4”-16 | 30 | 17.3 | 50.8 | 5/16”-18UNC | 9 | 1.5 |
| RCH121 | 42 | 17.9 | 75 | 120 | 162 | 70 | 54.1 | 35.1 | 25 | * | * | * | * | 2 3/4”-16 | 30 | 19.5 | * | * | * | 2.8 | |
| RCH1211 | 42 | 17.9 | 75 | 120 | 162 | 70 | 54.1 | 35.1 | 25 | * | * | 3/4”-16UN | 18 | 2 3/4”-16 | 30 | 17.3 | * | * | * | 2.8 | |
| RCH123 | 76 | 17.9 | 136 | 184 | 260 | 70 | 54.1 | 35.1 | 25 | * | * | * | * | 2 3/4”-16 | 30 | 19.5 | 50.8 | 5/16”-18UNC | 12.4 | 4.4 | |
| RCH202 | 20(215) | 49 | 30.7 | 150 | 162 | 211 | 98.5 | 73.1 | 54.1 | 19 | 54 | 9.7 | 1 9/16”-16UN | 30 | 3 7/8”-12 | 38 | 26.9 | 82.6 | 3/8”-16UNC | 9.4 | 7.7 |
| RCH206 | 155 | 30.7 | 476 | 306 | 461 | 98.5 | 73.1 | 54.1 | 25 | 54 | 9.7 | 1 9/16”-16UN | 30 | 3 7/8”-12 | 38 | 26.9 | 82.6 | 3/8”-16UNC | 9.4 | 14.1 | |
| RCH302 | 30(326) | 64 | 46.6 | 298 | 178 | 242 | 114 | 88.9 | 63.5 | 21 | 63 | 9 | 1 13/16”-16UN | 30 | 4 1/2”-12 | 42 | 33.3 | 92.2 | 3/8”-16UNC | 14 | 10.9 |
| RCH306 | 155 | 46.6 | 722 | 330 | 485 | 114 | 88.9 | 63.5 | 25 | 63 | 9 | 1 13/16”-16UN | 35 | 4 1/2”-12 | 42 | 33.3 | 92.2 | 3/8”-16UNC | 14 | 21.8 | |
| RCH603 | 60(576) | 76 | 82.3 | 626 | 247 | 323 | 159 | 123.9 | 91.9 | 31 | 91 | 12 | 2 3/4”-16UN | 35 | 6 1/4”-12 | 48 | 53.8 | 130.3 | 1/2”-13UNC | 14 | 28.1 |
| RCH606 | 153 | 82.3 | 1259 | 323 | 476 | 159 | 123.9 | 91.9 | 31 | 91 | 12 | 2 3/4”-16UN | 35 | 6 1/4”-12 | 48 | 53.8 | 130.3 | 1/2”-13UNC | 14 | 35.4 | |
| RCH1003 | 95(931) | 76 | 133 | 1011 | 254 | 330 | 213 | 165.1 | 127 | 38 | 126 | 12 | 4”-16UN | 40 | 8 3/8”-12 | 60 | 79 | 177.8 | 5/8”-11UNC | 19 | 63.0 |
Downloads
| – | File Name | File Type |
|---|---|---|
 | RCH Series,Single Acting Spring Retraction Hollow Hydraulic Cyinder | English |
| RCH系列单回路中空液压油缸 | 中文 |
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