CASE CX145D SR Minimum‑Swing Excavator: Short‑Radius Power for Road, Bridge & Urban Jobsites

The CASE CX145D SR is a reduced tail‑swing crawler excavator engineered to deliver full‑size digging and lifting performance within a compact working envelope, ideal for space‑restricted jobsites. Its short‑radius design allows the counterweight to stay close to the tracks, helping operators work safely near traffic, barriers and structures without sacrificing power.[2][3][1]

Key application scenarios include:

– Road and bridge construction where lane closures and work zones are tightly controlled.[4][2]

– Urban infrastructure projects such as utilities, pipelines and sewer repairs in congested streets.[5][6]

– Landscaping and site development requiring strong lifting capacity in confined residential or commercial areas.[7][8]

Compact Short‑Radius Design for Tight Jobsites

The CX145D SR uses a compact counterweight and modified boom placement to reduce its swing radius while maintaining balance and digging power. This layout minimizes tail overhang, which is critical when operating close to live traffic lanes, guardrails, buildings or other obstacles.[3][2][4][1]

Benefits of the short‑radius design:

– Improved maneuverability in narrow corridors, median work zones and shoulder lanes.[6][5]

– Lower risk of contact between the counterweight and nearby objects, reducing damage and downtime.[9][3]

– Enhanced safety margins when swinging over trenches, utilities or pedestrian areas.[8][5]

Performance Specifications & Powertrain

The CX145D SR combines transport‑friendly dimensions with robust performance, featuring an operating weight of approximately 32,100 lb (14,600 kg) and an engine output of about 102 hp (76.4 kW). This balance supports demanding excavation and lifting tasks while keeping the machine suitable for common transport regulations.[10][2][7][1]

Key performance figures:

– Operating weight: around 32,100 lb / 14,600 kg.[7][1]

– Engine power: approximately 102 hp, certified for Tier 4 Final emissions standards.[11][1]

– Bucket digging force: up to about 21,400 ft‑lb for heavy excavation and material handling.[7][1]

– Lift capacity: up to approximately 21,350 lb, suitable for pipes, culverts and structural elements.[12][1]

Tier 4 Final Emissions with Low Maintenance

To meet stringent Tier 4 Final regulations, the CX145D SR uses an integrated system combining selective catalytic reduction (SCR), cooled exhaust gas recirculation (CEGR) and a diesel oxidation catalyst (DOC). This configuration achieves near‑zero emissions without relying on a diesel particulate filter (DPF) or active regeneration cycles.[13][11][1]

System highlights:

– SCR converts nitrogen oxides in the exhaust into harmless nitrogen and water using diesel exhaust fluid.[14][11]

– CEGR recirculates a controlled portion of cooled exhaust gas to lower combustion temperatures and reduce NOx formation.[15][1]

– DOC oxidizes hydrocarbons and carbon monoxide, contributing to cleaner exhaust without the complexity of DPF management.[16][17]

Intelligent Hydraulic System for Speed & Efficiency

Faster cycle times in the CX145D SR come from an electronically controlled hydraulic pump, larger control and solenoid valves and multiple sensors that constantly monitor operating conditions. These components enhance the CASE Intelligent Hydraulic System, which balances hydraulic power and engine load to improve productivity and fuel efficiency.[12][7][1]

The system includes four key control functions:

– Boom Economy Control (BEC): Utilizes gravity during boom‑down and swing to reduce engine speed and save fuel.[1]

– Auto Economy Control (AEC): Lowers rpm during idle and can automatically shut the engine down after a preset idle period.[1]

– Swing Relief Control (SWC): Limits hydraulic power at swing start, reducing unnecessary pressure spikes and fuel use.[4][1]

– Spool Stroke Control (SSC): Adjusts hydraulic pressure during digging to enhance speed while preventing excess flow.[1]

An Auto Power Boost feature automatically increases breakout force in demanding conditions, helping the bucket penetrate dense or compacted material without multiple passes.[12][1]

Power Modes for Different Job Profiles

The CX145D SR offers three selectable power modes so operators can align machine behavior with specific tasks and site conditions. These modes adjust engine speed and hydraulic response to favor either economy or performance.[7][1]

Available power modes:

1. Automatic (A)

– Everyday mode that balances fuel efficiency and productivity.[1]

– Suitable for general excavation, backfilling and routine trenching.[1]

2. Heavy Duty (HD)

– Configured for high workload applications, such as deep trenching and heavy digging in dense soils.[1]

– Maintains strong power delivery over extended cycles.[1]

3. Speed Priority (SP)

– Focuses on maximum speed and power for high‑production tasks like truck loading.[1]

– Best when fast cycle times are more important than fuel savings.[1]

Standardized Features for Easier Operation

D Series excavators integrate more standard equipment than previous CASE models, simplifying the configuration process and reducing reliance on optional add‑ons. This standardization ensures that the CX145D SR arrives ready for precise lifting, straightforward maintenance and operator preference settings.[2][12][1]

Key standard features:

– Free Swing, which improves control when craning, placing or positioning loads offset from the machine.[1]

– Oil sample ports on engine and hydraulic circuits, enabling quick, clean fluid sampling for preventive maintenance.[1]

– An easy pattern selector that lets operators switch between ISO and SAE control patterns.[1]

Operator Environment, Safety & Visibility

The CX145D SR cab is designed as an operator‑focused environment, with extra space, improved visibility and reduced noise and vibration. A pressurized, viscous‑mounted structure helps isolate the operator from jobsite disturbances, supporting comfort during long shifts.[2][1]

Main comfort and control elements:

– Fully adjustable heated air‑ride seat that provides support on rough terrain and in cold climates.[1]

– Ergonomic multifunction controls positioned to minimize strain and shorten operator reach.[1]

– Integrated Bluetooth radio enabling hands‑free calls and audio.[1]

Visibility and information systems:

– Standard rear‑view and side‑view cameras feeding a 7‑inch widescreen monitor to improve awareness around the machine.[1]

– On‑screen access to fuel consumption, operating hours and important machine status indicators.[1]

– Optional CASE Max View Monitor that delivers up to 270‑degree visibility, well suited for busy urban or industrial sites.[1]

New LED Lighting Package for 24/7 Productivity

For contractors operating at night or in low‑light conditions, the CX145D SR can be equipped with an optional LED work light package. These LED lights deliver brightness levels significantly higher than conventional halogen lights while drawing less power.[7][1]

The package includes six LED lights:

– Two at the front to illuminate the digging area.[1]

– Two at the rear to assist with reversing and swing operations.[1]

– One on each side to increase lateral visibility.[1]

Ownership Experience with CASE ProCare™

All D Series excavators, including the CX145D SR, are backed by CASE ProCare™, which is designed to make early ownership more predictable. This package reduces uncertainty around service costs and helps keep machines performing to specification.[2][12][1]

Typical ProCare™ coverage includes:

– A three‑year Advanced CASE SiteWatch™ telematics subscription for remote monitoring of machine use and performance.[1]

– A three‑year / 3,000‑hour full‑machine factory warranty that covers major components for peace of mind.[1]

– A three‑year / 3,000‑hour planned maintenance contract to ensure services occur at the correct intervals.[1]

Where the CX145D SR Excels: Real‑World Job Examples

The CX145D SR is particularly effective in environments where space, safety and regulatory requirements restrict equipment choice. Its configuration supports precise work next to live traffic, within tight utility corridors and on elevated structures.[3][4][2][7]

High‑value use cases:

– Bridge deck rehabilitation, where reduced tail overhang helps avoid impacts with parapets and guardrails.[8][4]

– Urban utility trenching, where the machine must work close to buildings, footpaths and underground services.[5][6]

– Road‑side drainage and slope work, where crews can operate from shoulders or narrow pull‑outs while maintaining clearance to traffic.[9][3]

Selection Tips – Is a Minimum‑Swing Excavator Right for Your Fleet?

When specifying equipment for mixed infrastructure projects, fleet managers often compare minimum‑swing, reduced tail‑swing and conventional tail‑swing excavators. Each configuration has distinct trade‑offs related to jobsite space, lifting stability and safety margins.[3][4][8]

Configuration Comparison Table

Excavator type	Tail radius & space need	Typical benefits	Common trade‑offs
Minimum / zero tail swing	Counterweight stays within or very near track width for extremely tight spaces.	Excellent maneuverability and low risk of striking nearby structures or traffic.	May offer slightly lower lifting capacity and more pitching with heavy loads than conventional machines.
Reduced tail swing (CX145D SR class)	Counterweight extends slightly beyond track width, balancing clearance and leverage.	Strong lifting performance with significantly better clearance than conventional tail swing.	Requires somewhat more space than true zero‑tail machines in the tightest corridors.
Conventional tail swing	Larger tail radius that extends further behind tracks, requiring a wide work envelope.	Excellent overall stability and digging performance on open sites.	Higher risk of counterweight contact in confined areas and near traffic lanes.

For contractors heavily engaged in road, bridge and municipal utility work, a reduced tail‑swing excavator often provides a practical balance between clearance, lifting performance and overall productivity.[5][2]

Best‑Practice Operating Tips for Maximum ROI

Consistent operating habits and disciplined maintenance are essential for getting the best return on investment from a CX145D SR. Simple daily practices can significantly improve fuel economy, uptime and component life.[17][14][12][7]

Recommended practices:

1. Match the power mode to the job, using Automatic for routine excavation, Heavy Duty for demanding digging and Speed Priority for high‑output loading.[1]

2. Take advantage of Free Swing when lifting or placing loads to maintain smooth movement and control.[1]

3. Keep camera lenses and LED light covers clean to preserve visibility in dusty or muddy conditions.[4][1]

4. Use on‑board monitoring and telematics to track fuel and DEF consumption for different operators and tasks.[14][1]

5. Follow the planned maintenance schedule and use sample ports to detect issues before they cause unplanned downtime.[17][1]

Action Call – Schedule a CX145D SR Consultation Today

Contractors planning upcoming road, bridge or urban infrastructure projects can benefit from evaluating how the CX145D SR fits into their fleet strategy and workload. Its combination of minimum‑swing design, Tier 4 Final emissions technology, intelligent hydraulics and structured ownership support is tailored to high‑demand, space‑restricted environments.[12][2][7][1]

To identify the best specification and support package for your projects:

– Schedule a consultation with an authorized CASE specialist to review application requirements, transport limits and attachment needs.

– Request a detailed quotation that includes options such as track type, LED lighting and monitoring packages.

– Arrange a field demonstration on a representative jobsite to validate swing clearance, lifting capacity and cycle times under real conditions.

FAQs About the CASE CX145D SR Minimum‑Swing Excavator

Q1. What is the operating weight and engine power of the CX145D SR?

The CX145D SR has an operating weight of approximately 32,100 lb (14,600 kg) and is powered by a Tier 4 Final diesel engine producing about 102 hp (76.4 kW).[7][1]

Q2. Why choose a minimum‑swing or reduced tail‑swing excavator for road and bridge work?

Short‑radius machines reduce the risk of counterweight contact with guardrails, structures and traffic while enabling productive work inside restricted lane closures. This configuration helps improve safety and can limit the extent and duration of traffic disruptions.[8][9][3][4]

Q3. Does the CX145D SR use a DPF for Tier 4 Final compliance?

The CX145D SR achieves Tier 4 Final emissions performance using SCR, cooled EGR and DOC technologies, so it does not rely on a diesel particulate filter or active DPF regeneration.[13][1]

Q4. What operator comfort and safety features come standard?

Standard equipment includes a spacious, pressurized cab, a heated air‑ride seat, ergonomic controls, Bluetooth radio, rear‑view and side‑view cameras and a 7‑inch monitor for camera feeds and machine data.[2][1]

Q5. How does CASE ProCare™ support new CX145D SR owners?

CASE ProCare™ typically combines a three‑year telematics subscription, a three‑year / 3,000‑hour full‑machine warranty and a three‑year / 3,000‑hour planned maintenance contract to stabilize early ownership costs and support consistent uptime.[12][1]

Citations:

[1] https://www.casece.com/en-us/northamerica/inside-case/articles/2017/case-expands-d-series-with-cx145d-sr-minimum-swing-excavator

[2] https://www.casece.com/en-us/northamerica/products/excavators/large-excavators/cx145d-sr

[3] https://jcbcea.com.au/2018/04/mini-excavator-tail-swings-conventional-vs-reduced-vs-zero/

[4] https://www.forconstructionpros.com/equipment/earthmoving/article/11080206/different-advantages-of-reduced-zero-and-conventional-tailswing-excavators-for-applications-on-the-jobsite

[5] https://yufanmachinery.com/zero-tail-swing-vs-conventional-excavator/

[6] https://www.boleous.com/blog/swing-radius-and-tail-swing/

[7] https://www.cmi-case.com/wp/product/case-cx145d-s-full-size-excavator/

[8] https://abelyfashion.livepositively.com/the-future-of-compact-power-why-zero-swing-excavators-are-revolutionizing-construction/

[9] https://bobcatoftherockies.com/knowledge-center/why-should-you-rent-a-zero-tail-swing-excavator/

[10] https://www.heavyhaulers.com/equipment/case/hydraulic-excavator-specs/cx145dsr-specs.php

[11] https://www.equipmentworld.com/construction-equipment/article/14952553/everything-you-need-to-know-about-tier-4-final

[12] https://www.brokentractor.com/p/case-cx145d-sr-excavator-specs-performance-guide-case-cx145dsr-excavator-specs/

[13] https://www.oemoffhighway.com/engines/article/10898056/investigate-final-tier-4-options

[14] https://www.danfoss.com/en-us/service-and-support/case-stories/dcs/what-is-tier-4/

[15] https://www.epa.gov/regulations-emissions-vehicles-and-engines/regulations-emissions-heavy-equipment-compression

[16] https://technopowergroup.com/blogs/tier-4-emissions

[17] https://www.agproud.com/articles/22248-mechanics-corner-tier-4-emissions-update

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