Enerpac Telescopic Hydraulic Cylinder Specifications
Compare Enerpac RT and RLT telescopic hydraulic cylinders for lifting applications that require more travel from a compact starting height. Multi-stage telescopic cylinders extend in two or three stages to move loads farther in a single hydraulic lift while helping reduce repeated cylinder resets and temporary cribbing.
Northland Air Hydraulics supplies and supports Enerpac telescopic hydraulic cylinders from Edmonton, Alberta. Need help matching an RT or RLT cylinder with the correct hydraulic pump, hose, pressure gauge, couplers, manifold or synchronized lifting system? Northland can help review the complete hydraulic setup.
More Stroke From Less Starting Height
Enerpac telescopic cylinders use multiple nested hydraulic stages. The largest first stage provides the greatest lifting capacity, while each following stage extends the load farther with progressively lower maximum capacity.
Multiple Stages Create More Hydraulic Travel
A telescopic hydraulic cylinder contains multiple nested plungers rather than one conventional piston rod. The larger first stage extends first and provides the greatest lifting force. Smaller stages then extend sequentially to increase total cylinder travel.
Telescopic construction provides substantially more hydraulic travel than many conventional cylinders with comparable starting dimensions.
Current Enerpac RT and RLT models use two- or three-stage designs depending on cylinder size and required total stroke.
Longer hydraulic travel can reduce repeated cylinder resets and temporary cribbing in suitable lifting applications.
Each stage has a different effective hydraulic area and maximum lifting capacity. Selection must account for the lowest-capacity stage used.
Nitrocarburized surfaces improve corrosion protection, surface hardness and wear resistance for demanding industrial lifting environments.
Multi-cylinder telescopic lifting systems can use synchronized hydraulic control when several lift points must travel together.
Capacity Changes as the Cylinder Extends
Telescopic cylinder capacity should never be evaluated using only the first-stage rating. The allowable load decreases as smaller hydraulic stages extend, so the load must remain within the capacity of every stage used during the lift.
The largest piston extends first and provides the greatest hydraulic force during the initial portion of the lift.
The next stage increases total travel but operates with a smaller effective hydraulic area and lower maximum capacity.
The smallest final stage provides maximum cylinder extension and represents the lowest maximum lifting capacity.
RT or RLT — Which Telescopic Cylinder Fits?
RT cylinders provide much longer hydraulic travel for general multi-stage lifting. RLT cylinders provide short telescopic travel from an exceptionally low starting height where available clearance is limited.
RT
Enerpac RT Multi-Stage Telescopic Cylinders
15.4–34.8 Ton Capacity at Maximum Stroke • 10.63–23.62" Total Stroke
RT Series — Multi-Stage Telescopic Hydraulic Cylinders
Enerpac RT telescopic hydraulic cylinders provide long travel in a compact multi-stage package. The current RT range includes six two- and three-stage models with total strokes from 10.63 to 23.62 inches.
Capacity at maximum extension ranges from 15.4 to 34.8 tons, while the larger first and intermediate stages provide considerably greater lifting capacities. Always compare the load against the capacity of every stage used.
Where RT Telescopic Hydraulic Cylinders May Be Used
Enerpac RT telescopic cylinders may be used where a load needs to move farther than a conventional compact cylinder can practically provide. Applications can include machinery installation, structural positioning, industrial lifting, equipment movement, alignment and projects where reducing repeated cribbing or cylinder resets can simplify the job.
Applications for Enerpac RT Cylinders
Multi-stage RT telescopic cylinders may support work in construction, infrastructure, manufacturing, mining, heavy-equipment maintenance, plant shutdowns and machinery installation.
These are common examples and are not an exhaustive list. Enerpac RT telescopic hydraulic cylinders may also be used in other lifting, positioning, alignment and maintenance applications where the required stage capacities, total stroke, side-load conditions, support surface and hydraulic system are suitable.
RT Series Features
- Single-acting, load-return telescopic hydraulic operation.
- Two- and three-stage cylinder configurations.
- Total travel up to 23.62 inches in a single hydraulic movement.
- Nitrocarburized surface treatment inside and out improves corrosion protection and surface hardness.
- Designed for 3% side load of full cylinder capacity.
- Double or triple wear bearings support telescopic lifting stages.
- Integral tilting saddles with up to 5° maximum tilt are standard on all current RT models.
- Certified lifting eyes assist safe cylinder handling and positioning.
- CR400 coupler provides compatibility with standard Enerpac hydraulic connections.
- Steel cylinder base provides a strong reaction surface.
- Wiper rings on each telescopic stage help reduce contamination.
- Full-load-capable stop rings help prevent plunger overstroke.
- Design safety factor complies with ASME B30.1 and EN1494.
When several RT telescopic cylinders need to move simultaneously, use an appropriate synchronous lifting system. EVO or EVOP-Series synchronous lifting pumps are suitable options. Do not use SFP-Series split-flow pumps to operate several telescopic cylinders simultaneously because hydraulic oil-volume requirements differ between stages.
| Model |
Capacity at Maximum Stroke
(tons) |
Maximum Stroke
(in) |
Collapsed Height
(in) |
Extended Height
(in) |
Oil Capacity
(in³) |
|---|---|---|---|---|---|
| RT1510 | 15.4 | 10.63 | 11.14 | 21.77 | 57.61 |
| RT1817 | 18.7 | 17.13 | 13.58 | 30.71 | 188.69 |
| RT2111 | 22.2 | 11.81 | 12.48 | 24.29 | 90.74 |
| RT2119 | 22.2 | 19.69 | 15.55 | 35.24 | 284.43 |
| RT3311 | 34.8 | 11.81 | 13.86 | 25.67 | 143.96 |
| RT3323 | 34.8 | 23.62 | 18.74 | 42.36 | 537.99 |
| Model |
1st Stage
Capacity (tons) |
1st Stage
Stroke (in) |
2nd Stage
Capacity (tons) |
2nd Stage
Stroke (in) |
3rd Stage
Capacity (tons) |
3rd Stage
Stroke (in) |
Outside Diameter
(in) |
Bottom to Advance Port
(in) |
Saddle Diameter
(in) |
|---|---|---|---|---|---|---|---|---|---|
| RT1510 | 40 | 5.31 | 15 | 5.31 | — | — | 4.33 | 0.79 | 2.36 |
| RT1817 | 104 | 5.71 | 45 | 5.71 | 18.7 | 5.71 | 6.69 | 1.06 | 3.15 |
| RT2111 | 56 | 5.91 | 22 | 5.91 | — | — | 4.92 | 0.91 | 2.36 |
| RT2119 | 139 | 6.69 | 56 | 6.69 | 22.2 | 6.30 | 7.87 | 1.34 | 3.54 |
| RT3311 | 89 | 5.91 | 35 | 5.91 | — | — | 6.30 | 0.98 | 3.15 |
| RT3323 | 223 | 7.87 | 89 | 7.87 | 34.8 | 7.87 | 9.84 | 1.73 | 4.33 |
RLT
Enerpac RLT Low-Height Telescopic Cylinders
4.8–81.7 Ton Capacity at Maximum Stroke • 0.67–1.57" Total Stroke
RLT Series — Low-Height Telescopic Hydraulic Cylinders
Enerpac RLT cylinders combine very low collapsed heights with two- or three-stage telescopic movement. They are designed for lifting and positioning applications where conventional cylinders will not fit but additional hydraulic travel is still required.
Capacity at maximum stroke ranges from 4.8 to 81.7 tons. First-stage capacities can be considerably higher, so the allowable load must be evaluated against the stage that will actually be supporting the load.
Where RLT Low-Height Telescopic Cylinders May Be Used
RLT low-height telescopic cylinders may be used for machinery positioning, tool fastening, equipment alignment, maintenance lifting and industrial applications where starting clearance is extremely limited but more travel is required than a conventional low-height cylinder provides.
Applications for Enerpac RLT Cylinders
Low-height telescopic cylinders may support manufacturing, industrial maintenance, fabrication, construction, machinery installation, heavy-equipment service and other confined-space lifting applications.
These are common examples and are not an exhaustive list. Enerpac RLT low-height telescopic hydraulic cylinders may also be used in other confined-space lifting, positioning, fastening and maintenance applications where stage capacity, required stroke, available clearance and support conditions are suitable.
RLT Series Features
- Single-acting, load-return telescopic operation.
- Two- and three-stage low-height designs.
- Designed for confined-space machinery positioning and tool-fastening applications.
- Nitrocarburized surfaces inside and out provide improved wear and corrosion resistance.
- Mounting bolt holes allow easier cylinder fixing and positioning.
- Designed for side loads up to approximately 3% of maximum capacity.
- Design safety factor complies with ASME B30.1 and EN1494.
- CR400 coupler provides compatibility with standard Enerpac systems.
- High-alloy steel construction provides strength for industrial lifting applications.
When several RLT telescopic cylinders need to operate simultaneously, use an appropriate synchronous lifting system. EVO-Series synchronous lifting pumps are suitable for this type of application. Do not use SFP-Series split-flow pumps to operate several telescopic cylinders simultaneously because hydraulic oil-volume requirements differ between stages.
| Model |
Capacity at Maximum Stroke
(tons) |
Maximum Stroke
(in) |
Collapsed Height
(in) |
Extended Height
(in) |
Oil Capacity
(in³) |
|---|---|---|---|---|---|
| RLT40 | 4.8 | 0.67 | 1.77 | 2.44 | 1.29 |
| RLT41 | 4.8 | 0.91 | 2.13 | 3.03 | 3.09 |
| RLT110 | 12.5 | 0.71 | 2.15 | 2.85 | 2.90 |
| RLT111 | 12.5 | 1.57 | 3.50 | 5.08 | 14.71 |
| RLT230 | 26.1 | 1.06 | 2.95 | 4.02 | 9.15 |
| RLT231 | 26.1 | 1.26 | 3.78 | 5.04 | 18.50 |
| RLT311 | 34.8 | 1.14 | 3.50 | 4.65 | 13.64 |
| RLT501 | 55.8 | 1.02 | 3.78 | 4.80 | 17.29 |
| RLT741 | 81.7 | 1.02 | 4.49 | 5.51 | 25.97 |
| Model |
1st Stage
Capacity (tons) |
1st Stage
Stroke (in) |
2nd Stage
Capacity (tons) |
2nd Stage
Stroke (in) |
3rd Stage
Capacity (tons) |
3rd Stage
Stroke (in) |
Outside Diameter
D1 × D2 (in) |
Plunger Diameter
(in) |
Bottom to Advance Port
(in) |
Plunger to Base
(in) |
|---|---|---|---|---|---|---|---|---|---|---|
| RLT40 | 12.5 | 0.43 | 4.8 | 0.24 | — | — | 3.27 × 2.20 | 0.98 | 0.79 | 1.14 |
| RLT41 | 26.1 | 0.43 | 12.5 | 0.28 | 4.8 | 0.20 | 4.02 × 3.15 | 0.98 | 0.79 | 1.61 |
| RLT110 | 26.1 | 0.43 | 12.5 | 0.28 | — | — | 4.02 × 3.15 | 1.50 | 0.79 | 1.61 |
| RLT111 | 81.7 | 0.63 | 34.8 | 0.51 | 12.5 | 0.43 | 6.50 × 5.51 | 1.50 | 0.98 | 2.78 |
| RLT230 | 55.8 | 0.63 | 26.1 | 0.43 | — | — | 5.51 × 4.49 | 2.24 | 0.79 | 2.28 |
| RLT231 | 104.4 | 0.63 | 55.8 | 0.39 | 26.1 | 0.24 | 7.01 × 6.38 | 2.24 | 1.14 | 3.50 |
| RLT311 | 81.7 | 0.63 | 34.8 | 0.51 | — | — | 6.50 × 5.51 | 2.36 | 0.98 | 2.78 |
| RLT501 | 104.4 | 0.63 | 55.8 | 0.39 | — | — | 7.01 × 6.38 | 3.07 | 1.14 | 3.50 |
| RLT741 | 158.2 | 0.63 | 81.7 | 0.39 | — | — | 8.50 × 7.72 | 3.74 | 1.38 | 4.25 |
Choosing the Right Telescopic Cylinder Style
RT multi-stage cylinders provide substantially more total travel and are the better starting point when a load must be moved farther in a single hydraulic lift.
- 10.63–23.62" total stroke
- Two- and three-stage designs
- Integral 5° tilt saddles
- 3% side-load rating
- 15.4–34.8 ton capacity at maximum stroke
RLT telescopic cylinders provide shorter total travel but exceptionally low collapsed heights for confined-space machinery positioning and lifting.
- Collapsed heights starting at 1.77"
- 0.67–1.57" total stroke
- Two- and three-stage designs
- Up to 3% side load
- 4.8–81.7 ton capacity at maximum stroke
Where Telescopic Hydraulic Cylinders Are Used
Telescopic hydraulic cylinders are useful where greater movement is required than the available starting height would normally allow. These are common application examples and are not intended to limit other suitable uses.
Move and position industrial machinery during installation, leveling and alignment.
Produce additional hydraulic travel where conventional cylinder starting height is restricted.
Move structural loads farther during controlled lifting and alignment operations.
Lift or reposition heavy equipment and components during service, repair and shutdown work.
Low-height RLT cylinders can be used in machinery, fixtures and confined industrial tooling applications.
Long-travel RT cylinders can reduce repeated cylinder repositioning and temporary cribbing in suitable applications.
Provide compact hydraulic lifting and positioning during maintenance outages and equipment replacement.
Provide controlled multi-stage hydraulic movement for lifting and positioning work on industrial job sites.
Support machinery positioning and specialized high-force applications where space and travel requirements are critical.
These examples are not an exhaustive list. Enerpac RT and RLT telescopic hydraulic cylinders may also be used in other industrial lifting, positioning, alignment, installation and maintenance applications where the required stage capacities, stroke, alignment, support surface and hydraulic system are appropriate.
Telescopic Cylinders Need the Right Hydraulic Pump
Because telescopic cylinders use multiple piston areas, hydraulic oil requirements change as the different stages extend. Pump reservoir capacity, hoses, gauges, couplers, manifolds and lifting controls should all be matched to the complete application.
Confirm maximum pressure, usable reservoir volume and required lifting speed.
Use compatible high-pressure hydraulic hose with suitable length and routing.
Monitor hydraulic pressure to better understand the force being applied during the lift.
RT and RLT cylinders use CR400 connections for compatibility with standard Enerpac hydraulic systems.
Multi-cylinder systems may require manifolds and individual pressure monitoring at each lifting point.
Use appropriate synchronized hydraulic control where several telescopic cylinders must travel together.
Stage Capacity Is Just as Important as Total Stroke
Confirm the load remains below the allowable capacity of every telescopic stage required during the lift.
Determine the actual movement required before choosing between RT and RLT models.
Measure the available starting clearance before selecting a cylinder.
Confirm the pump reservoir contains sufficient usable hydraulic oil for the required cylinder extension.
Keep the cylinder properly aligned and remain within the specified side-load limits.
Use the appropriate synchronized lifting system when several telescopic cylinders need to operate together.
Tell Us the Load, Starting Height & Required Travel.
Northland can help compare Enerpac RT and RLT telescopic hydraulic cylinders and match the selected model with the appropriate hydraulic pump, hose, pressure gauge, couplers, manifold and synchronous lifting controls for applications in Edmonton, Alberta and across Western Canada.
