JMF29 SWING MOTOR ASSY

2 month ago

2 0 

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

3 year

Product details

SWING MOTOR

SG025 SH60 /SK60/E70B/307

SG04 HD400/450SEV CAT311/312

MFC65 SH100/120 SK100-2/3

SG08 CAT200B/SH200/HD700/820

M2X96 EX200-2 EX220-2

M2X120 EX200-3 E320L/B SK200-6

M2X146 EX200-5 EX220-5 SK230-6

M2X150/170 EX200-1 SK200-1/3 SK07-N2

M2X210 EX270/280/300-1 HD1250

M5X130 ZAX200/210 CAT320C SK200-8

M5X180 ZAX330/360 HD1430

M2X63 R130/150 SK60-1

KMF90 PC200-3/5 PC220-3/5

KMF160 PC300-3/5 PC400-3/5

MX173 EX200-1/220-1(OLD)

M5X150 CAT300B

1. Product Overview

• Model: JMF29

• Type: Hydraulic Swing Motor Assembly

• Application: Primarily used in the swing mechanisms of excavators, cranes, and other construction machinery to drive 360° rotation of the upper structure (cab and working attachments).

• Core Function: Converts hydraulic energy into mechanical energy for smooth, controlled swing motion.

2. Technical Specifications

【表格】

Parameter JMF29 Specifications

Displacement 29 cm³/rev

Rated Pressure 250 bar (Max 300 bar)

Speed Range 0–15 rpm (stepless)

Braking Method Hydraulic release + spring brake (normally closed)

Output Torque Max continuous torque: ≥500 Nm

Weight Approx. 45–60 kg (varies by config)

Compatible Models 3–5-ton mini excavators (e.g., CAT 303, KOBELCO SK75)

3. Structural Components

• Hydraulic Motor Section:

• Axial piston design for high-efficiency transmission.

• Integrated charge pump and relief valve for overpressure protection.

• Reducer Section:

• Planetary gear reduction mechanism to reduce speed and increase torque.

• Gear material: Alloy steel with surface hardening for wear resistance.

• Brake System:

• Hydraulic Release Brake (HRB) with automatic parking lock.

• Brake pad lifespan: ≥5,000 hours (under normal conditions).

• Sealing System:

• Dual-lip seals to prevent hydraulic oil leakage.

• Dust-proof wiper design to extend bearing life.

4. Performance Features

• Energy Efficiency: Variable displacement motor adjusts output based on load.

• Smooth Operation: Low-speed, high-torque output reduces swing shock.

• Durability: Cast iron housing for harsh operating conditions.

• Easy Maintenance: Modular design allows independent replacement of brakes and bearings.

5. Common Failures & Solutions

【表格】

Symptom Possible Cause Solution

Weak or stuck swing Contaminated oil, internal motor leakage Replace hydraulic oil/filters, inspect motor seals

Brake failure Blocked brake oil line, broken spring Clean brake line, replace spring

Abnormal noise Worn gears, damaged bearings Replace reducer gears/bearings

Oil leakage Aged seals, cracked housing Replace seals, weld repair housing

You May Also Like

1609

Stationary scissor lift

1160

PSA Oxygen Plant Containerized

1004

Semi Double Scale Weight Packing Machine.mp4

1004

Stand up zipper bag making machine

638

Tea bag packing and boxing .mp4

620

Cashew vacuum packing machine

618

401-00060C K3V112DT-HNOV 2401-9158 K3V112DTP Hydraulic Main Pump For Doosan DX210W-7 DX220W-7 Excavator1

607

50-250PVC给水管或者PVC排水管生产线都可以.mp4

607

High Speed Multifunction Bag Making Machine

597

Granule packing machine for 4 side sealing bag

Bossgoovideo.com Contact Now

If you are interested in the product, contact Bossgoovideo.com for more information

*To:: Ningbo Hengnuo Hydraulic Drive Co.,Ltd

*Message:

Submit

 Disclaimer :

The information of Bossgoovideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of Bossgoovideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation. If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.

Suppliers

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

Audited supplier

3 year

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch , hydraulic system

Contact now