NACHI PCR-5B-30A-FGP Swing Motor – for SANY 75 Excavator

Description

Detail Information

Note: The application information provided is for reference only. Please confirm the part number and compare it with the old component before purchasing. If you have any questions, please feel free to contact us.
It is worth choosing a product that features stable performance, high reliability, easy installation, and quick response.

1. Key Features & Benefits

• Genuine NACHI PCR series swing motor – Model PCR-5B-30A-FGP. Manufactured by NACHI-FUJIKOSHI CORP., a world-leading Japanese hydraulic component manufacturer and OEM supplier to major excavator brands including Caterpillar, Kobelco, JCB, New Holland, Case, and SANY. This is a brand‑new, factory‑fresh unit – not remanufactured, not a generic substitute.

• Specifically engineered for SANY SY75 and compatible mini excavators – Designed for SANY SY75, SY75C, as well as Caterpillar 305/306/E307D, Kobelco SK30-50SR, JCB 85Z-1/100C-1, and other 5–8 ton class mini excavators. This swing motor powers the upper structure rotation, delivering the torque and control needed for precise positioning in tight urban spaces and demanding job sites.

• PCR series – NACHI’s proven mini excavator swing platform – The PCR series features axial piston swing motors with an integrated planetary gearbox and shockless relief valve. Five frame sizes (PCR-1B through PCR-5B) cover mini excavators from 1.5 to 8.0 tonnes without changing the mounting configuration. The PCR-5B is the largest in the series, designed for the 5–8 ton class.

• High torque output for 5–8 ton class machines – The PCR-5B delivers a maximum final displacement of 907 cm³/rev and a swing motor maximum torque of 3,537 N·m (≈2,609 lbf·ft). Hydraulic motor maximum pressure is 24.5 MPa (≈3,553 psi). This provides the rotational power needed for fast, precise slewing even under heavy bucket loads.

• Integrated planetary gearbox and braking mechanism – Ensures smooth rotation start and effective braking of the mini excavator platform. The integrated design results in a compact assembly, allowing for easy installation in space‑constrained equipment.

• Shockless relief valve for smooth operation – The integrated shockless relief valve ensures smooth start and stop of platform rotation without hydraulic pressure spikes. Anti‑shock valves protect the hydraulic system and the machine’s slewing ring from pressure spikes during sudden stops. This provides smooth, jerk‑free slewing essential for precision work near structures.

• Built‑in parking brake for slope safety – The parking brake is built directly into the hydraulic motor, further improving safety when operating on slopes. The brake engages automatically when swing controls return to neutral, holding the upper structure securely.

• No gear oil replacement required – The reduction gearbox uses hydraulic oil lubrication, eliminating the need for separate gear oil changes. This simplifies maintenance and reduces long‑term operating costs.

• Compact, low‑profile design – The improved arrangement of components and decreased height enable installation under the driver’s seat. The compact size facilitates installation in equipment with limited space.

• Wide operating temperature range – Rated for an operating temperature range from -20°C up to +50°C, making it well suited for long‑term outdoor use in diverse climates.

• IP65 rated protection – Highly resistant to dust, dirt, and water spray, ensuring reliable performance in the toughest outdoor conditions.

• Pre‑shipment visual verification – Before packing, we send you detailed high‑resolution photographs of the actual unit (mounting flange, splines, port threads, castings, overall condition). You approve shipment – we never ship blind.

• Fast delivery – 5–8 working days lead time from our Guangzhou warehouse. Monthly supply capacity of 300 units, available for single‑piece or bulk orders.

2. Applications

The genuine NACHI PCR-5B-30A-FGP swing motor is the power source for SANY SY75 and 5–8 ton class mini excavators used across a wide range of job sites:

• Urban construction & utilities – Sidewalk repairs, water and gas line trenching, fibre‑optic cable installation, and small‑scale demolition in tight access spaces. The shockless relief valve provides smooth, jerk‑free rotation essential for working near existing structures, while the compact low‑profile design allows installation in space‑constrained equipment.

• Residential landscaping & pool excavation – Pool digs, retaining walls, grading, and drainage work. The smooth start and stop of platform rotation without hydraulic pressure spikes minimises disturbance to nearby homes, while the high torque output (3,537 N·m) provides the rotational power needed for precise bucket positioning.

• Road & bridge maintenance – Shoulder repairs, guardrail replacement, and drainage cleaning. The swing motor’s precise rotation and positioning capabilities, achieved through hydraulic control, allow operators to position the cab and attachments precisely for roadside work, even in tight work zones with limited space.

• Equipment rental fleet – Mini excavators are the most frequently rented machines. A genuine new swing motor provides predictable service life and eliminates the gamble of remanufactured or used units – avoiding costly mid‑rental failures, towing bills, and customer complaints. The no‑gear‑oil‑change design reduces maintenance costs for rental fleet operators.

• Forestry & vegetation clearance – Steep slopes, fallen timber, and uneven terrain demand reliable swing performance. The integrated parking brake holds the upper structure securely on inclines, while the anti‑shock valves protect the slewing ring from pressure spikes during sudden stops.

• Agriculture & land management – Drainage ditch cleaning, irrigation trenching, pond maintenance, and land preparation. The wide operating temperature range (-20°C to +50°C) ensures reliable performance in diverse agricultural climates.

3. FAQ – Frequently Asked Questions

Q1: Is this swing motor an exact replacement for my SANY SY75?

A: Yes. The PCR-5B-30A-FGP is the genuine NACHI swing motor for SANY SY75, SY75C, and related 5–8 ton class mini excavators. It is also compatible with Caterpillar 305/306/E307D, Kobelco SK30-50SR, JCB 85Z-1/100C-1, New Holland E30-50.2SR, Case CX31-50B, and other machines using the NACHI PCR-5B swing motor platform. To confirm compatibility for your specific machine variant, send us your machine serial number and a photo of the old motor nameplate – we will verify within 2 hours.

Q2: Is this a new motor or a remanufactured unit?

A: It is brand new / genuine original, not remanufactured. All internal components are new. The motor is manufactured by NACHI-FUJIKOSHI CORP. to original specifications and meets all OEM performance standards. NACHI is one of the world’s leading suppliers of hydraulic swing motors for excavators.

Q3: What are the key specifications of this motor?

A: The PCR-5B-30A-FGP is an axial piston swing motor with an integrated planetary gearbox and braking mechanism. Maximum final displacement is 907 cm³/rev, swing motor maximum torque is 3,537 N·m, hydraulic motor maximum pressure is 24.5 MPa, and mass is 79 kg. Applicable shovel weight is up to 8.0 tonnes. Operating temperature range is -20°C to +50°C.

Q4: Do I need to change gear oil in this swing motor?

A: No. The reduction gearbox uses hydraulic oil lubrication, eliminating the need for separate gear oil changes. This significantly reduces maintenance requirements and long‑term operating costs.

Q5: What is the warranty on this motor?

A: Warranty period is 3 to 6 months depending on product details. We do not provide warranty service for genuine original parts. Our value is delivered up front: genuine NACHI components, new‑condition motor, and pre‑shipment visual verification. For customers who require a warranty‑covered option, we can quote aftermarket alternatives – ask our sales team.

Q6: How long does delivery take?

A: Delivery is 5–8 working days after order confirmation from our Guangzhou warehouse. Express shipping (DHL/FedEx/UPS) is available for urgent orders.

Q7: What payment methods do you accept?

A: We accept T/T, XTransfer, PayPal, and Western Union.

Q8: How can I verify the motor is genuine before shipping?

A: Before packing, we send you clear, high‑resolution photographs of the actual unit – mounting flange, splines, port threads, casting marks, and overall condition. You approve shipment only after reviewing these images. We never ship blind.

Q9: What oil should I use with this motor?

A: The hydraulic motor section uses the excavator’s main hydraulic oil (typically ISO VG 46). The reduction gearbox is lubricated by hydraulic oil – no separate gear oil is required. Always refer to your SANY SY75 operator’s manual for the correct hydraulic oil viscosity and specification.

Q10: What is the shockless relief valve and why does it matter?

A: The shockless relief valve is integrated into the PCR series swing motor to ensure smooth start and stop of platform rotation without hydraulic pressure spikes. This provides smooth, jerk‑free slewing essential for precision work near structures and reduces wear on the slewing ring and hydraulic system. Anti‑shock valves protect the hydraulic system and the machine’s slewing ring from pressure spikes during sudden stops.

Still have questions? Contact Hongtengda Parts – we reply within 24 hours.