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Stable Clearance Noise Control DU Bushing for Quiet Damper Operation

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Stable Clearance Noise Control DU Bushing for Quiet Damper Operation

MOQ:	500pcs
Price:	negotiation
Standard Packaging:	Products packed by plastic bag, each bag contain 500pcs or 5kg Max
Delivery Period:	Within 20-25days after order confirmation
Payment Method:	T/T,L/C
Supply Capacity:	50,000pcs per month

Detail Information

Product Description

Detail Information

Place of Origin

NINGBO,CHINA

Brand Name

XIAYI

Certification

IATF16949:2016

Model Number

Product Name:

BUSHING

Inner Layer:

Application:

Hydraulic Gear Pump

Type:

Sleeve

Coefficient Of Linear Expansion:

12*10 -6/K

Load Capacity P (Dry):

250N/mm2 (Static Load)

PV Value Limit:

50N/mm2 (Oil Lubrication)

Material Of Bands:

Bronze Steel

Product Description

Designed for damper and pump applications where quiet, stable operation matters, the XIAYI SF-2 DU bushing combines a lead-based PTFE sliding layer with a sintered bronze interlayer and a low-carbon steel backing. The result is controlled clearance, reduced noise and vibration, and dependable dry-running performance that helps equipment run smoother for longer.

Common Concerns and How XIAYI Addresses Them

Common Concern	How XIAYI Solves It
Annoying squeak and vibration during damper operation	Low friction coefficient (0.08~0.20 dry) and a stable transfer film suppress noise and vibration
Unstable clearance that causes rattling and uneven wear	Precision flange dimensions and controlled bronze interlayer keep clearance consistent
Frequent lubrication and messy grease maintenance	Runs long-term without oil, cutting downtime and keeping the workspace clean
Corrosion in harsh chemical or humid environments	Copper or tin plating (0.002mm) provides reliable corrosion resistance

Specifications

Parameter	Value
Temperature	-195 to +280 °C
Max. dry running Pv (short-term operation)	3.6 N/mm2.m/s
Max. dry running Pv (continuous operation)	1.8 N/mm2.m/s
Max. speed (dry running)	2 m/s
Max. speed (hydrodynamic operation)	>2 m/s

Description

1. Good load capacity and anti-wear performance.

2. Works for a long time without oil.

3. Low friction index.

Flange Bearing Size Range

Min. ID	Min. OD	Max. ID	Max. OD	Min. FD	Max. FD	Max. Length
6mm	8mm	40mm	44mm	12mm	53mm	40mm
40mm	46mm	95mm	105mm	60mm	144mm	127mm
25mm	28mm	300mm	305mm	35mm	340mm	90mm
25mm	28mm	300mm	305mm	35mm	340mm	90mm
10mm	14mm	120mm	140mm	22mm	170mm	100mm
6mm	12mm	50mm	60mm	14mm	70mm	70mm
6mm	12mm	300mm	320mm	35mm	340mm	130mm

I.D. = inner diameter | O.D. = outer diameter | F.D. = flange diameter

Material Advantages

1. PTFE / Pb mixture 0.01-0.03mm provides an excellent initial transfer film.

2. Sintered bronze powder 0.20-0.35mm provides maximum thermal conductivity away from the bearing surface and acts as a reservoir for the PTFE-lead mixture.

3. Low-carbon steel backing gives exceptionally high load carrying capacity and excellent heat dissipation.

4. Copper / tin plating 0.002mm provides good corrosion resistance.

Technical Data

Performance Index		Data
Max load capacity	Static load	250 N/mm2
Max load capacity	Dynamic load	140 N/mm2
Max sliding speed	Dry friction	2.5 m/s
Max sliding speed	Oil lubrication	5.0 m/s
Max PV value limit	Dry friction	3.6 N/mm2 m/s
Max PV value limit	Oil lubrication	50 N/mm2 m/s
Friction coefficient	Dry friction	0.08-0.20
Friction coefficient	Oil lubrication	0.02-0.07
Working temperature		-195°C ~ 280°C
Thermal conductivity		42 W/mk
Coefficient of thermal expansion		11*10-6 /k

Applications

Stainless steel bushing is widely used in strong acid and alkali situations, such as the chemical industry, pumps and valves.

Lead-free bearing is widely used in food machinery and pharmaceutical machinery.

Competitive Advantages

1. A complete set of testing equipment

2. Rich experience in bushing production

3. Good outsource factory

4. Annual audit of material suppliers

Packaging & Delivery

Packaging: products packed in plastic bags, each bag containing 500 pcs or 5 kg max, packed in cartons of 20 kg max. Delivered by wooden package or iron cage / pallet as requested. Standard size 800x800x1200, max gross weight 800 kg.

Delivery: within 10-15 days after order confirmation.

Frequently Asked Questions

Q: How does this bushing reduce noise in damper operation?

A: Its low friction coefficient (0.08~0.20 dry) and stable PTFE transfer film dampen vibration and suppress squeak, enabling quieter operation.

Q: What does "stable clearance" mean?

A: The precision flange dimensions and controlled sintered bronze interlayer keep the running clearance consistent, preventing rattling and uneven wear.

Q: What flange sizes are available?

A: Inner diameters range from 6mm to 300mm, outer diameters up to 320mm, and flange diameters up to 340mm. Custom sizes are also available.

Q: Is a lead-free version available?

A: Yes. Lead-free bearings are available and are widely used in food machinery and pharmaceutical machinery.

Q: What is the typical lead time?

A: Delivery is normally within 10-15 days after order confirmation, depending on quantity.

Tags:

sintered bronze bush,

oilless bushing,

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Stable Clearance Noise Control DU Bushing for Quiet Damper Operation

MOQ:	500pcs
Price:	negotiation
Standard Packaging:	Products packed by plastic bag, each bag contain 500pcs or 5kg Max
Delivery Period:	Within 20-25days after order confirmation
Payment Method:	T/T,L/C
Supply Capacity:	50,000pcs per month

Detail Information

Product Description

Detail Information

Place of Origin

NINGBO,CHINA

Brand Name

XIAYI

Certification

IATF16949:2016

Model Number

SF-2

Product Name:

BUSHING

Inner Layer:

PTFE

Application:

Hydraulic Gear Pump

Type:

Sleeve

Coefficient Of Linear Expansion:

12*10 -6/K

Load Capacity P (Dry):

250N/mm2 (Static Load)

PV Value Limit:

50N/mm2 (Oil Lubrication)

Material Of Bands:

Bronze Steel

Minimum Order Quantity:

500pcs

Price:

negotiation

Packaging Details:

Products packed by plastic bag, each bag contain 500pcs or 5kg Max

Delivery Time:

Within 20-25days after order confirmation

Payment Terms:

T/T,L/C

Supply Ability:

50,000pcs per month

Product Description

Common Concerns and How XIAYI Addresses Them

Common Concern	How XIAYI Solves It
Annoying squeak and vibration during damper operation	Low friction coefficient (0.08~0.20 dry) and a stable transfer film suppress noise and vibration
Unstable clearance that causes rattling and uneven wear	Precision flange dimensions and controlled bronze interlayer keep clearance consistent
Frequent lubrication and messy grease maintenance	Runs long-term without oil, cutting downtime and keeping the workspace clean
Corrosion in harsh chemical or humid environments	Copper or tin plating (0.002mm) provides reliable corrosion resistance

Specifications

Parameter	Value
Temperature	-195 to +280 °C
Max. dry running Pv (short-term operation)	3.6 N/mm2.m/s
Max. dry running Pv (continuous operation)	1.8 N/mm2.m/s
Max. speed (dry running)	2 m/s
Max. speed (hydrodynamic operation)	>2 m/s

Description

1. Good load capacity and anti-wear performance.

2. Works for a long time without oil.

3. Low friction index.

Flange Bearing Size Range

Min. ID	Min. OD	Max. ID	Max. OD	Min. FD	Max. FD	Max. Length
6mm	8mm	40mm	44mm	12mm	53mm	40mm
40mm	46mm	95mm	105mm	60mm	144mm	127mm
25mm	28mm	300mm	305mm	35mm	340mm	90mm
25mm	28mm	300mm	305mm	35mm	340mm	90mm
10mm	14mm	120mm	140mm	22mm	170mm	100mm
6mm	12mm	50mm	60mm	14mm	70mm	70mm
6mm	12mm	300mm	320mm	35mm	340mm	130mm

I.D. = inner diameter | O.D. = outer diameter | F.D. = flange diameter

Material Advantages

1. PTFE / Pb mixture 0.01-0.03mm provides an excellent initial transfer film.

2. Sintered bronze powder 0.20-0.35mm provides maximum thermal conductivity away from the bearing surface and acts as a reservoir for the PTFE-lead mixture.

3. Low-carbon steel backing gives exceptionally high load carrying capacity and excellent heat dissipation.

4. Copper / tin plating 0.002mm provides good corrosion resistance.

Technical Data

Performance Index		Data
Max load capacity	Static load	250 N/mm2
Max load capacity	Dynamic load	140 N/mm2
Max sliding speed	Dry friction	2.5 m/s
Max sliding speed	Oil lubrication	5.0 m/s
Max PV value limit	Dry friction	3.6 N/mm2 m/s
Max PV value limit	Oil lubrication	50 N/mm2 m/s
Friction coefficient	Dry friction	0.08-0.20
Friction coefficient	Oil lubrication	0.02-0.07
Working temperature		-195°C ~ 280°C
Thermal conductivity		42 W/mk
Coefficient of thermal expansion		11*10-6 /k

Applications

Stainless steel bushing is widely used in strong acid and alkali situations, such as the chemical industry, pumps and valves.

Lead-free bearing is widely used in food machinery and pharmaceutical machinery.

Competitive Advantages

1. A complete set of testing equipment

2. Rich experience in bushing production

3. Good outsource factory

4. Annual audit of material suppliers

Packaging & Delivery

Delivery: within 10-15 days after order confirmation.

Frequently Asked Questions

Q: How does this bushing reduce noise in damper operation?

A: Its low friction coefficient (0.08~0.20 dry) and stable PTFE transfer film dampen vibration and suppress squeak, enabling quieter operation.

Q: What does "stable clearance" mean?

A: The precision flange dimensions and controlled sintered bronze interlayer keep the running clearance consistent, preventing rattling and uneven wear.

Q: What flange sizes are available?

A: Inner diameters range from 6mm to 300mm, outer diameters up to 320mm, and flange diameters up to 340mm. Custom sizes are also available.

Q: Is a lead-free version available?

A: Yes. Lead-free bearings are available and are widely used in food machinery and pharmaceutical machinery.

Q: What is the typical lead time?

A: Delivery is normally within 10-15 days after order confirmation, depending on quantity.

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