ENERPAC LOCK NUT HYDRAULIC CYLINDERS

Enerpac Lock Nut Hydraulic Cylinder Specifications

Compare Enerpac lock nut hydraulic cylinders for lifting, leveling, bridge work, structural support, machinery positioning and applications where a raised load must remain mechanically supported after hydraulic pressure is removed.

Northland Air Hydraulics supplies and supports Enerpac lock nut cylinders from Edmonton, Alberta. Need help matching an LPL, HCL, RACL or HCRL cylinder with the correct hydraulic pump, hose, pressure gauge, couplers, manifold or synchronized lifting system? Northland can help review the complete setup.

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20–1000 TON STANDARD CLASSES 1.77–11.81" STANDARD STROKES MECHANICAL LOAD HOLDING SINGLE & DOUBLE ACTING STEEL & ALUMINUM

QUICK REFERENCE

Lift Hydraulically. Hold Mechanically.

A lock nut cylinder raises the load hydraulically, then uses a mechanical lock nut to support the load for extended periods. This makes lock nut cylinders useful for structural lifting, maintenance, leveling, foundation work and long-duration support.

4 Lock Nut Series

20–1000 Standard Ton Classes

1.77–11.81" Standard Stroke Range

10,000–10,150 PSI Maximum Pressure by Series

LPL • HCL • RACL • HCRL • MECHANICAL LOAD HOLDING

THINK SAFETY Manufacturer load and stroke ratings are maximum safe limits. Good practice encourages using an appropriate margin below those ratings whenever practical.

MECHANICAL LOAD HOLDING The lock nut mechanically supports the raised load instead of relying on hydraulic pressure alone.

NEED A COMPLETE SYSTEM? Northland can help match the cylinder, pump, hose, gauge, couplers, manifolds and controls.

WHY USE A LOCK NUT CYLINDER?

Built for Loads That Need to Stay Supported

Enerpac lock nut cylinders combine hydraulic lifting force with mechanical load holding. They are designed for applications where a load may need to remain raised during inspection, alignment, construction, repair, grouting, bridge work, machinery installation or other extended-duration work.

Mechanical Load Holding

Once the load is positioned, the threaded lock nut can be lowered to provide positive mechanical support.

Extended Load Support

Lock nut cylinders are useful where loads need to remain supported throughout maintenance, construction or alignment work.

Structural Lifting

High-capacity lock nut cylinders can support bridge, foundation, infrastructure and large structural lifting projects.

Side-Load Resistance

Selected Enerpac lock nut cylinder families are designed to tolerate specified side loads when operated within their stated limits.

Multiple Return Styles

Choose gravity return, spring return or double-acting hydraulic retraction depending on the cylinder family and application.

Multi-Point Lifting

High-tonnage lock nut cylinders can be incorporated into synchronized lifting systems where several lift points must move together.

CHOOSE A LOCK NUT SERIES

Compare Enerpac Lock Nut Cylinder Types

Open a series below to compare capacities, strokes, technical specifications, applications and common industries.

LPL Low Height • Single-Acting HCL High Tonnage • Single-Acting RACL Lightweight Aluminum HCRL High Tonnage • Double-Acting

ABOUT CYLINDER TONNAGE

Cylinder tonnage is commonly used as a capacity-class reference. For load calculations and hydraulic system selection, use the listed maximum capacity for the exact model and confirm that all components in the lifting system are appropriately rated.

LPL Enerpac LPL Low-Height Lock Nut Cylinders 60–500 Ton Classes • 1.77–1.97" Stroke • Gravity Return

LPL Series — Low-Height Lock Nut Hydraulic Cylinders

Enerpac LPL cylinders combine extremely low collapsed height with mechanical load holding. The single-acting gravity-return design is suited to heavy lifting where vertical clearance is restricted and the load needs to remain mechanically supported.

COMMON APPLICATIONS

Where LPL Low-Height Lock Nut Cylinders May Be Used

LPL cylinders may be used for structural lifting, foundation repair, machinery positioning, leveling, equipment installation and maintenance where available clearance is limited and a mechanically supported load is required.

COMMON INDUSTRIES & APPLICATIONS

Applications for Enerpac LPL Cylinders

Low-height lock nut cylinders may support infrastructure, construction, mining, oil and gas, heavy equipment, industrial maintenance and structural-support work.

Infrastructure Construction Mining Oil & Gas Heavy Equipment Industrial Maintenance

These are common examples and are not an exhaustive list. Enerpac LPL lock nut cylinders may also be used in other low-clearance lifting, leveling, positioning and mechanical load-support applications where the required capacity, stroke, support surface and hydraulic system are suitable.

60–500 Ton Capacity Classes

1.77–1.97" Stroke Range

10,150 PSI Maximum Pressure

5–10% Side-Load Resistance

LPL Series Features

Mechanical lock nut provides positive load holding.
Integrated tilt saddle permits up to 5° of misalignment depending on model.
Extremely low height for confined lifting areas.
Side-load resistance ranges from 5% to 10% depending on model.
Overflow port acts as a stroke limiter to help prevent plunger over-extension.
Single-acting, gravity-return operation.
Replaceable plunger support bearings help support eccentric loads.
Nitrocarburized surfaces improve load, wear and corrosion resistance.
Low-wear high-pressure seals support longer service life.

SOLID LIFTING SURFACE REQUIRED

LPL cylinders require a solid, adequately supported lifting surface. Operating directly on unstable surfaces such as sand, mud or loose soil may damage the cylinder or create an unsafe lifting condition.

Capacity Class	Maximum Capacity (tons)	Model	Stroke (in)	Effective Area (in²)	Side-Load Resistance	Oil Capacity (in³)	Collapsed Height (in)	Lock Nut Height (in)
60 ton	68	LPL602	1.97	13.42	10%	26.4	5.39	1.10
100 ton	113	LPL1002	1.97	22.19	10%	43.7	5.83	1.22
150 ton	179	LPL1602	1.77	35.18	8%	62.3	6.10	1.57
200 ton	223	LPL2002	1.77	43.95	8%	77.9	6.24	1.69
250 ton	286	LPL2502	1.77	56.27	5%	99.7	7.01	1.69
400 ton	450	LPL4002	1.77	88.75	5%	157.2	7.56	2.17
500 ton	575	LPL5002	1.77	113.25	5%	200.6	7.56	2.42

HCL Enerpac HCL High-Tonnage Lock Nut Cylinders 50–1000 Ton Classes • 1.97–11.81" Stroke • Gravity Return

HCL Series — High-Tonnage Single-Acting Lock Nut Cylinders

Enerpac HCL lock nut cylinders are designed for high-tonnage lifting and mechanical load holding. Standard capacity classes range from 50 to 1000 tons with stroke options from 1.97 to 11.81 inches.

COMMON APPLICATIONS

Where HCL High-Tonnage Lock Nut Cylinders May Be Used

HCL cylinders may be used for bridge lifting, foundation support, structural leveling, heavy-equipment positioning, machinery installation, infrastructure work and large loads that must remain mechanically supported after lifting.

COMMON INDUSTRIES & APPLICATIONS

Applications for Enerpac HCL Cylinders

High-tonnage lock nut cylinders may support bridge and infrastructure work, mining, heavy transport, oil and gas, power generation, industrial construction and major maintenance projects.

Bridge & Infrastructure Mining Heavy Transport Oil & Gas Power Generation Industrial Construction

These are common examples and are not an exhaustive list. Enerpac HCL lock nut cylinders may also be used in other high-tonnage lifting, positioning, leveling and mechanically supported load applications where the required capacity, stroke, side-load conditions and hydraulic system are suitable.

50–1000 Ton Capacity Classes

1.97–11.81" Stroke Range

10,150 PSI Maximum Pressure

10% Side Load up to 90% of Maximum Stroke

HCL Series Features

Single-acting hydraulic advance with gravity return.
Lock nut provides positive mechanical load holding.
Low-friction locking rings are designed to turn easily.
Designed to withstand 10% side load up to 90% of maximum stroke.
Hardened surfaces improve resistance to side loading and cyclic wear.
Overflow port acts as a stroke limiter to help prevent plunger blow-out.
Weather-protected construction inside and out.
Replaceable bearings enclose and support the plunger throughout the stroke.
Certified lifting eyes are provided for easier handling.
Base mounting holes provide versatile mounting options.
Optional tilt saddles are available for load-alignment applications.

Capacity Class	Maximum Capacity (tons)	Model	Stroke (in)	Effective Area (in²)	Oil Capacity (in³)	Collapsed Height (in)
50 ton	62	HCL502	1.97	12.17	23.96	6.46
50 ton	62	HCL504	3.94	12.17	47.93	8.43
50 ton	62	HCL506	5.91	12.17	71.89	10.39
50 ton	62	HCL508	7.87	12.17	95.86	12.36
50 ton	62	HCL5010	9.84	12.17	119.82	14.33
50 ton	62	HCL5012	11.81	12.17	143.78	16.30
100 ton	113	HCL1002	1.97	22.19	43.67	7.36
100 ton	113	HCL1004	3.94	22.19	87.35	9.33
100 ton	113	HCL1006	5.91	22.19	131.02	11.30
100 ton	113	HCL1008	7.87	22.19	174.70	13.27
100 ton	113	HCL10010	9.84	22.19	218.37	15.24
100 ton	113	HCL10012	11.81	22.19	262.05	17.20
150 ton	168	HCL1502	1.97	33.14	65.24	8.23
150 ton	168	HCL1504	3.94	33.14	130.48	10.20
150 ton	168	HCL1506	5.91	33.14	195.73	12.17
150 ton	168	HCL1508	7.87	33.14	260.97	14.13
150 ton	168	HCL15010	9.84	33.14	326.21	16.10
150 ton	168	HCL15012	11.81	33.14	391.45	18.07
200 ton	223	HCL2002	1.97	43.95	86.51	9.37
200 ton	223	HCL2004	3.94	43.95	173.02	11.34
200 ton	223	HCL2006	5.91	43.95	259.53	13.31
200 ton	223	HCL2008	7.87	43.95	346.04	15.28
200 ton	223	HCL20010	9.84	43.95	432.55	17.24
200 ton	223	HCL20012	11.81	43.95	519.06	19.21
250 ton	286	HCL2502	1.97	56.27	110.77	9.80
250 ton	286	HCL2504	3.94	56.27	221.55	11.77
250 ton	286	HCL2506	5.91	56.27	332.32	13.74
250 ton	286	HCL2508	7.87	56.27	443.09	15.71
250 ton	286	HCL25010	9.84	56.27	553.87	17.68
250 ton	286	HCL25012	11.81	56.27	664.64	19.65
300 ton	341	HCL3002	1.97	67.23	132.34	10.94
300 ton	341	HCL3004	3.94	67.23	264.68	12.91
300 ton	341	HCL3006	5.91	67.23	397.02	14.88
300 ton	341	HCL3008	7.87	67.23	529.36	16.85
300 ton	341	HCL30010	9.84	67.23	661.71	18.82
300 ton	341	HCL30012	11.81	67.23	794.05	20.79
400 ton	450	HCL4002	1.97	88.75	174.70	12.48
400 ton	450	HCL4004	3.94	88.75	349.39	14.45
400 ton	450	HCL4006	5.91	88.75	524.09	16.42
400 ton	450	HCL4008	7.87	88.75	698.79	18.39
400 ton	450	HCL40010	9.84	88.75	873.49	20.35
400 ton	450	HCL40012	11.81	88.75	1048.18	22.32
500 ton	575	HCL5002	1.97	113.25	222.92	14.06
500 ton	575	HCL5004	3.94	113.25	445.85	16.02
500 ton	575	HCL5006	5.91	113.25	668.77	17.99
500 ton	575	HCL5008	7.87	113.25	891.70	19.96
500 ton	575	HCL50010	9.84	113.25	1114.62	21.93
500 ton	575	HCL50012	11.81	113.25	1337.55	23.90
600 ton	673	HCL6002	1.97	132.57	260.97	14.96
600 ton	673	HCL6004	3.94	132.57	521.94	16.93
600 ton	673	HCL6006	5.91	132.57	782.90	18.90
600 ton	673	HCL6008	7.87	132.57	1043.87	20.87
600 ton	673	HCL60010	9.84	132.57	1304.84	22.83
600 ton	673	HCL60012	11.81	132.57	1565.81	24.80
800 ton	916	HCL8002	1.97	180.44	355.21	16.93
800 ton	916	HCL8004	3.94	180.44	710.41	18.90
800 ton	916	HCL8006	5.91	180.44	1065.62	20.87
800 ton	916	HCL8008	7.87	180.44	1420.82	22.83
800 ton	916	HCL80010	9.84	180.44	1776.03	24.80
800 ton	916	HCL80012	11.81	180.44	2131.24	26.77
1000 ton	1196	HCL10002	1.97	235.68	463.94	19.06
1000 ton	1196	HCL10004	3.94	235.68	927.88	21.02
1000 ton	1196	HCL10006	5.91	235.68	1391.83	22.99
1000 ton	1196	HCL10008	7.87	235.68	1855.77	24.96
1000 ton	1196	HCL100010	9.84	235.68	2319.71	26.93
1000 ton	1196	HCL100012	11.81	235.68	2783.65	28.90

RACL Enerpac RACL Aluminum Lock Nut Cylinders 20–150 Ton Classes • 1.97–9.84" Stroke • Spring Return

RACL Series — Lightweight Aluminum Lock Nut Cylinders

Enerpac RACL cylinders combine mechanical load holding with lightweight aluminum construction. They are useful for portable structural support and maintenance applications where cylinder weight is an important consideration.

COMMON APPLICATIONS

Where RACL Aluminum Lock Nut Cylinders May Be Used

RACL cylinders may be used for bridge reinforcement, structural support, equipment positioning, maintenance, leveling and extended load-support work where a lighter cylinder is easier to transport and position.

COMMON INDUSTRIES & APPLICATIONS

Applications for Enerpac RACL Cylinders

Lightweight lock nut cylinders may support bridge work, infrastructure, construction, mining, field maintenance, heavy-equipment service and industrial repair.

Bridge Work Infrastructure Construction Mining Field Maintenance Heavy Equipment

These are common examples and are not an exhaustive list. Enerpac RACL aluminum lock nut cylinders may also be used in other portable lifting, positioning, leveling and mechanically supported load applications where the required capacity, stroke and support conditions are suitable.

20–150 Ton Capacity Classes

1.97–9.84" Stroke Range

10,000 PSI Maximum Pressure

Up to 5% Side-Load Resistance

RACL Series Features

Aluminum lock nut provides mechanical load holding for extended periods.
Hardened steel stop ring improves durability and resistance to side loads up to approximately 5%.
Hard-Coat finish helps resist surface damage and extend cylinder life.
Composite bearings improve cylinder life and side-load resistance.
Handles are included on all models.
Steel base plate and hardened saddle protect against load-induced damage.
Integral stop ring helps prevent plunger over-travel.
High-strength return spring provides rapid retraction.
CR400 coupler and dust cap are included.

Capacity Class	Maximum Capacity (tons)	Model	Stroke (in)	Effective Area (in²)	Oil Capacity (in³)	Collapsed Height (in)	Lock Nut Height (in)
20 ton	24.2	RACL202	1.97	4.83	9.52	8.83	1.58
20 ton	24.2	RACL204	3.94	4.83	19.03	10.80	1.58
20 ton	24.2	RACL206	5.91	4.83	28.55	12.76	1.58
20 ton	24.2	RACL208	7.87	4.83	38.01	14.73	1.58
20 ton	24.2	RACL2010	9.84	4.83	47.53	16.70	1.58
30 ton	34.2	RACL302	1.97	6.85	13.49	9.10	1.58
30 ton	34.2	RACL304	3.94	6.85	26.99	11.07	1.58
30 ton	34.2	RACL306	5.91	6.85	40.48	13.04	1.58
30 ton	34.2	RACL308	7.87	6.85	53.91	15.01	1.58
30 ton	34.2	RACL3010	9.84	6.85	67.40	16.98	1.58
50 ton	54.9	RACL502	1.97	10.99	21.65	9.29	1.97
50 ton	54.9	RACL504	3.94	10.99	43.30	11.26	1.97
50 ton	54.9	RACL506	5.91	10.99	64.95	13.23	1.97
50 ton	54.9	RACL508	7.87	10.99	86.49	15.20	1.97
50 ton	54.9	RACL5010	9.84	10.99	108.14	17.17	1.97
100 ton	110.9	RACL1002	1.97	22.19	43.71	11.65	3.70
100 ton	110.9	RACL1004	3.94	22.19	87.43	13.62	3.70
100 ton	110.9	RACL1006	5.91	22.19	131.14	15.59	3.70
100 ton	110.9	RACL1008	7.87	22.19	174.64	17.57	3.70
100 ton	110.9	RACL10010	9.84	22.19	218.35	19.54	3.70
150 ton	175.9	RACL1502	1.97	35.18	69.30	12.72	4.45
150 ton	175.9	RACL1504	3.94	35.18	138.61	14.69	4.45
150 ton	175.9	RACL1506	5.91	35.18	207.91	16.65	4.45
150 ton	175.9	RACL1508	7.87	35.18	276.87	18.62	4.45
150 ton	175.9	RACL15010	9.84	35.18	346.17	20.59	4.45

HCRL Enerpac HCRL Double-Acting Lock Nut Cylinders 50–300 Ton Standard Classes • 5.91–11.81" Standard Stroke

HCRL Series — Double-Acting High-Tonnage Lock Nut Cylinders

Enerpac HCRL cylinders combine mechanical load holding with hydraulic advance and powered retract. Standard models cover 50 through 300 ton capacity classes with strokes from 5.91 to 11.81 inches.

COMMON APPLICATIONS

Where HCRL Double-Acting Lock Nut Cylinders May Be Used

HCRL cylinders may be used for synchronized lifting, bridge work, heavy structural positioning, machinery installation, multi-point lifting, industrial construction and applications where controlled powered retraction is useful.

COMMON INDUSTRIES & APPLICATIONS

Applications for Enerpac HCRL Cylinders

Double-acting lock nut cylinders may support infrastructure, bridge construction, heavy transport, mining, oil and gas, power generation and engineered lifting projects.

Bridge Construction Infrastructure Heavy Transport Mining Oil & Gas Engineered Lifting

These are common examples and are not an exhaustive list. Enerpac HCRL double-acting lock nut cylinders may also be used in other high-force lifting, positioning, synchronized lifting and mechanical load-support applications where the required capacity, stroke, hydraulic controls and support conditions are suitable.

50–300 Ton Standard Capacity Classes

5.91–11.81" Standard Stroke Range

10,150 PSI Maximum Pressure

Up to 10% Side-Load Capability

HCRL Series Features

Hydraulic advance and powered retract for controlled movement.
Lock nut provides mechanical load holding.
Designed to withstand side load up to 10% of maximum capacity.
Integrated tilt saddle permits up to 5° of load misalignment.
Hardened surfaces resist side loading and cyclic wear.
Weather-protected construction inside and out.
Replaceable bearings support the plunger internally and externally.
Certified lifting eyes are standard.
Base mounting holes and collar threads provide mounting options.
Stop ring helps prevent plunger blow-out.
Low-friction lock nut is designed to turn more easily.
Safety valve helps protect against accidental over-pressurization.

HIGHER CAPACITIES & LONGER STROKES

Standard HCRL models cover 50 to 300 ton capacity classes with 5.91 to 11.81 inch strokes. Engineered HCRL configurations are available up to 2000 tons, with additional stroke lengths available on request. Contact Northland with the required load, stroke, number of lift points and application details.

Capacity Class	Maximum Capacity (tons)	Model	Stroke (in)	Effective Area (in²)	Advance Oil (in³)	Retract Oil (in³)
50 ton	54	HCRL506	5.91	10.60	62.55	5.24
50 ton	54	HCRL508	7.87	10.60	83.42	6.99
50 ton	54	HCRL5010	9.84	10.60	104.29	8.73
50 ton	54	HCRL5012	11.81	10.60	125.16	10.48
100 ton	111	HCRL1006	5.91	21.91	129.41	14.38
100 ton	111	HCRL1008	7.87	21.91	172.54	19.17
100 ton	111	HCRL10010	9.84	21.91	215.68	23.96
100 ton	111	HCRL10012	11.81	21.91	258.81	28.76
150 ton	169	HCRL1506	5.91	33.23	196.26	14.38
150 ton	169	HCRL1508	7.87	33.23	261.69	19.17
150 ton	169	HCRL15010	9.84	33.23	327.11	23.96
150 ton	169	HCRL15012	11.81	33.23	392.50	28.76
200 ton	225	HCRL2006	5.91	44.31	261.62	32.35
200 ton	225	HCRL2008	7.87	44.31	348.87	43.14
200 ton	225	HCRL20010	9.84	44.31	436.06	53.92
200 ton	225	HCRL20012	11.81	44.31	523.31	64.70
250 ton	277	HCRL2506	5.91	54.54	322.08	32.35
250 ton	277	HCRL2508	7.87	54.54	429.35	43.14
250 ton	277	HCRL25010	9.84	54.54	536.67	53.92
250 ton	277	HCRL25012	11.81	54.54	644.15	64.70
300 ton	334	HCRL3006	5.91	65.74	388.23	32.35
300 ton	334	HCRL3008	7.87	65.74	517.60	43.14
300 ton	334	HCRL30010	9.84	65.74	647.03	53.92
300 ton	334	HCRL30012	11.81	65.74	776.41	64.70

LOCK NUT CYLINDER SELECTION

Which Lock Nut Cylinder Series Should You Compare?

Tight Clearance?

Start with LPL when a very low collapsed height is required.

High-Tonnage General Lifting?

HCL provides single-acting lock nut models up to the standard 1000 ton class.

Need Lower Cylinder Weight?

RACL provides aluminum lock nut cylinders for more portable lifting.

Need Powered Retraction?

HCRL combines mechanical load holding with double-acting hydraulic operation.

Multi-Point or Synchronized Lift?

HCL and HCRL cylinders can be incorporated into engineered synchronized lifting systems.

Need More Than a Standard HCRL?

Engineered HCRL configurations can extend beyond the standard 300 ton range for specialized lifting projects.

COMMON LOCK NUT CYLINDER APPLICATIONS

Built for Heavy Loads That Need to Stay Put

Lock nut cylinders are used where controlled hydraulic lifting must be followed by stable mechanical support. These are common examples and are not intended to limit other suitable applications.

Bridge Lifting

Raise and mechanically support bridge components during repair, bearing replacement or alignment.

Foundation Support

Support structures during foundation repair, leveling and stabilization.

Structural Leveling

Raise and hold structural loads during controlled adjustment.

Machinery Installation

Lift and support large machinery during alignment, grouting or installation.

Heavy Equipment Maintenance

Mechanically support equipment during longer maintenance and repair procedures.

Multi-Point Lifting

Support engineered lifts involving several controlled hydraulic lifting points.

COMPLETE THE LOCK NUT CYLINDER SETUP

Match the Cylinder With the Right Hydraulic System

A lock nut cylinder still requires a correctly sized hydraulic system to raise and position the load. Pump oil capacity, pressure, hoses, controls and multi-point synchronization all need to match the application.

Hydraulic Pump

Match usable reservoir capacity, operating pressure and required lifting speed.

Hydraulic Hose

Select hose length and pressure rating for the cylinder arrangement and job site.

Pressure Gauge

Monitor hydraulic pressure and reduce the risk of exceeding cylinder ratings.

Couplers

Confirm coupler compatibility between cylinder, hose and pump.

Manifolds

Multiple cylinders may require manifolds or independently controlled outlets.

Synchronized Lifting

Multi-point structural lifts may require synchronized hydraulic control for balanced movement.

BEFORE YOU LIFT

Lock Nut Cylinder Selection Matters

Actual Load

Determine total load and load distribution before selecting cylinder capacity.

Number of Lift Points

Divide the load appropriately across all lift points and account for uneven load distribution.

Required Stroke

Confirm how far the load must move before selecting cylinder stroke.

Available Clearance

Compare the available starting space with the cylinder's collapsed height.

Support Surface

Ensure the cylinder is supported on a stable surface capable of carrying the applied load.

Holding Requirement

Determine how long the load needs to remain supported and when the lock nut will be engaged.

NEED HELP SELECTING A LOCK NUT CYLINDER?

Tell Us the Load, Stroke, Clearance & Holding Requirement.

Northland can help compare Enerpac LPL, HCL, RACL and HCRL lock nut hydraulic cylinders and match the selected model with the appropriate pump, hose, pressure gauge, couplers, manifolds and controls for lifting applications in Edmonton, Alberta and across Western Canada.

ASK NORTHLAND → 780-466-1172