Hydraulic Seal Guide Element

Hydraulic Seal Guide Element, like our other hydraulic seal products, has specific subdivision models. Ruichen Seals has always maintained product development and quality control. Each model has different design and production characteristics, and has its own more targeted working conditions and applications.

RC1081 reinforced polytetraethylene guide belt has the characteristics of high load, low wear, low friction and no creeping due to the addition of bronze powder and other materials to PTFE material. RC1082 cloth-reinforced phenolic guide belt has higher radial load capacity than PTFE guide belt due to the use of phenolic cloth-reinforced material. Both guide belts are provided in rolls, which can be cut by users for easy installation and avoid metal contact on the sliding surface.

The support ring is an important basic component of the hydraulic cylinder. In order to adapt to the development of sliding ring combined seals and soft bearing structures in the world, our company has successfully developed cloth-reinforced phenolic support rings (belts). Years of actual use have shown that this product has reached or exceeded the quality level of similar foreign products and has been widely praised by users. The performance table of the support rings (belts) produced by our company can be used as a reference. The piston and piston rod of the reciprocating hydraulic cylinder play a supporting and guiding role.

RCS non-metallic guide ring for piston rod RCT non-metallic guide ring for piston

For the piston or piston rod running in the hydraulic cylinder, the wear ring has a precise guiding effect and can absorb radial forces. At the same time, the wear ring can prevent metal contact of sliding parts in the hydraulic cylinder. Compared with metal wear rings, non-metallic wear rings have many advantages. Among them, cloth-reinforced phenolic and PTFE guide rings are available in on-site cutting and ready-to-use types.

1. Good wear resistance

2. Avoid metal contact

3. Can suppress mechanical vibration

4. Due to the centering effect of the wear ring, a larger radial clearance is allowed

5. Simple groove and easy to install

Low maintenance cost Based on the above advantages, it is widely used

Guide sleeve

GFAI is a guide sleeve for piston rod, which supports and guides the piston rod and also has a dustproof function. Guide sleeves GFI and GFA are guide sleeves for piston rod, which supports and guides the piston rod.

RCSF-1 guide ring is made of steel plate as the base, bronze powder sintered in the middle, and a mixture of polytetrafluoroethylene and fiber rolled on the surface. Features: 1. The mixture of PTFE and fiber is 0.01-0.03mm, forming a transfer film to protect the dual surface and has self-lubricating properties; 2. The copper powder layer is 0.2-0.3mm, with good load-bearing capacity and wear resistance, good thermal conductivity; 3. Low carbon steel, providing good load-bearing capacity and thermal conductivity.

RCFB type bronze guide ring is made of CuSn8 bronze as the base material and is an economical bushing with high load-bearing capacity and good resistance. The working surface of RCFB090 product is covered with regular diamond oil holes, and the working surface of RCFB092 product is covered with regular oil holes, which play the role of oil storage. It is easier to form an oil film at the beginning of movement, thereby reducing the initial friction resistance.

Product features and applications:

Ordering example:

PTFE guide tape ordering example  RC1081—9.7X2.5

Phenolic cloth guide tape ordering example  RC1082—9.7X2.5

Cutting length calculation

For shaft: L=3.1(d+w)   For hole: L=3.1(D-W)

L---ring length  d---shaft diameter  D---hole diameter  W---ring thickness  Z---cut clearance

Guide sleeve GFAI

1. Performance and use: The guide sleeve GFAI is a guide sleeve for the piston rod, which supports and guides the piston rod and has a dust-proof function.

2. Material: Nylon PA, polyoxymethylene POM and polytetrafluoroethylene PTFE.

3. Working conditions: Working temperature: -55～+225°C (PTFE is used above 120°).

4. Design standard: When designing and selecting, refer to the FAI series of Hunger Company.

5. Marking and ordering method: The guide sleeve GFAI is marked with the order number, example: GFAI-0600 PTFE

Guide sleeve GFI

1. Performance and use: Guide sleeve GFI is a guide sleeve for piston rod, which supports and guides the piston rod.

2. Material: Nylon PA, polyoxymethylene POM and polytetrafluoroethylene PTFE.

3. Working conditions: Working temperature: -55~+255°C (PTFE is used above 120°C)

4. Design standard: When designing and selecting, refer to Hunger's FI series.

5. Marking and ordering method: Guide sleeve GFI is marked with order number, example: GFI-0360 PA

Guide sleeve GFA

1. Performance and use: Guide sleeve GFA is a guide sleeve for piston, which supports and guides the piston.

2. Material: Nylon PA, polyoxymethylene POM and polytetrafluoroethylene PTFE.

3. Working conditions: Working temperature: -55~+255°C (PTFE is used above 120C)

4. Design standard: When designing and selecting, refer to Hunger's FA series.

5. Marking and ordering method: Guide sleeve GFA is marked with order number, example: GFA-0560 PA

6. Structural device:

Specifications:

Model	Groove width H+0.2	Thickness T-0.05	Thickness T T-0.05	Thickness T-0.05	Thickness T-0.05	Thickness T-0.05
RC1081/1082-4.2	4.2	1	1.55	2	2.5	-
RC1081/1082-5.6	5.6	1.55	2	2.5	-	-
RC1081/1082-6.3	6.3	1.55	2	2.5	-	-
RC1081/1082-8.1	8.1	1.55	2	2.5	-	-
RC1081/1082-9.7	9.7	2	2.5	3	3.5	4
RC1081/1082-12.7	12.7	2	2.5	3	3.5	4
RC1081/1082-15	15	2	2.5	3	3.5	4
RC1081/1082-20	20	2	2.5	3	3.5	4
RC1081/1082-25	25	2	2.5	3	3.5	4
RC1081/1082-30	30	2	2.5	3	3.5	4
RC1081/1082-35	35	2	2.5	3	3.5	4
Note: The boldface series are commonly used series. If the required product is not in this table, please contact us.

Cloth-reinforced phenolic support ring (belt)
Support rings are important basic components of hydraulic cylinders. In order to adapt to the development of sliding ring combined seals and soft bearing structures in the world, our company has successfully developed cloth-reinforced phenolic support rings (belts). Years of actual use have shown that this product has reached or exceeded the quality level of similar foreign products and has been widely praised by users. Tables 1 to 4 are the performance tables of support rings (belts) produced by our company.

Table 1 Comparison of physical properties of our support ring and Busak+Shamba products

Sample source	Support ring thickness (mm)	Compressive strength (Mpa)	Oil resistance weight change rate hydraulic oil (70±2℃*24h）	Breaking strength (Mpa)	Interlayer adhesion (KN/M)
Busak+Shamba	2.48	338.9	2.83	35.6	1.2
Our Products	2.48	425	0.90	37.0	2.9
	2.48 (with graphite)	390	0.63	36.4	2.08

Table 2 Performance index of hydraulic cylinder support ring

Sample variety	Our Products		Orkot TLG ①	Duratec900 ①	Turcite47 ②	MT64/5B	NokWR (Japanese)	POM modified Polyoxymethylene	CAT(US)
	Measured value	Required indicators
Compressive strength (Mpa)	≥350	≥330	≥350	≥280	≥50	≥270	≥150	≥80	≥217

Note: ①Busak+Shamba Company ②Merkel Company Table 3 Strength index

Sample variety	Our Products		Orkot TLG ①	Duratec900 ①	Turcite47 ②	MT64/5B	NokWR (Japanese)	POM modified Polyoxymethylene	CAT(US)
	Measured value	Required indicators
Compressive strength (Mpa)	≥350	≥330	≥350	≥280	≥50	≥270	-	≥80	≥217

Note: ①Busak+Shamba Company ②Merkel Company Table 4 Friction coefficient of our products and Orkot TLG under dry friction and oil dripping conditions

Load per unit contact length W(N/mm)	Hertz contact relay (N/mm2)	Friction coefficient
		Dry friction state		Oil drip lubrication state
		Our products	Orkot TLG	Our products	Orkot TLG
5.9	22.0	0.054	0.066	0.057	0.079
29.0	48.7	0.052	0.067	0.056	0.081
44.4	60.3	0.045	0.071	0.055	0.088
59.8	69.8	0.021	0.073	0.053	0.087
75.2	78.3	0.020	0.075	0.052	0.085

PTFE wear-resistant belt (ring)
Material	PTFE+BRONZE
Supply	Roll (usually about 20 meters/roll) or cut to the required length
Advantages	1. Low friction, no creeping and biting;
	2. Can work well without sufficient lubrication;
	3. Resistant to a variety of media, excellent chemical stability;
	4. Can accommodate hard objects embedded in the wear-resistant ring, reducing hard objects scratching the cylinder and seals, so in heavy-load situations, use multiple wear-resistant rings;
	5. It also has good wear resistance in high-speed and light-load situations, so it is the most widely used wear-resistant ring;
	6. No size restrictions, can be used in large diameter situations.
Temperature	-60~+200℃
Maximum speed	15m/s
Maximum extrusion strength	15N/mm2(20°)
	7.5N/mm2(80°)
	5N/mm2(120°)

Non-metallic guide ring for RCS piston rod

Non-metallic guide ring for RCT piston

For the piston or piston rod running in the hydraulic cylinder, the wear ring has a precise guiding effect and can absorb radial forces. At the same time, the wear ring can prevent metal contact of sliding parts in the hydraulic cylinder. Compared with metal wear rings, non-metallic wear rings have many advantages. Among them, cloth-reinforced phenolic and PTFE guide rings are available in on-site cutting type and ready-to-use type.

1. Good wear resistance

2. Avoid metal-to-metal contact

3. Can suppress mechanical vibration

4. Due to the centering effect of the wear ring, a large radial clearance is allowed

5. Simple groove, easy to install

6. Low maintenance cost Based on the above advantages, it is widely used

Materials:

1. Polytetrafluoroethylene PTFE3 (general material), PTFE4 (suitable for low-viscosity media such as water), PTFE1 (low-friction requirements such as pneumatics)

2. Polyoxymethylene POM or nylon PA and its modified materials

3. Formaldehyde resin + reinforced fiber PRIF

Comparison table of load-bearing capacity of different materials (reference)

Materials	Load capacity max (N/mm2)
PTFE-filled copper powder	15(20°C); 7.5(80°C); 5(120°C)
Phenolic with cloth	90(60°C); 40(80°C)
Polyoxymethylene or nylon	25(60°C); 15(80°C)
Polyoxymethylene or nylon filled	40(60°C); 30(80°C)

Groove surface quality

Smoothness	Rtmax(μm)	Ra(μm)
Sliding surface	≤2.5	0.05-0.3
Groove bottom	≤10	≤2
Groove side	≤15	≤3

Piston rod guide ring specification series

Rod diameter	Bottom diameter	Groove width	Thickness	Gap		Rod diameter	Bottom diameter	Groove width	Thickness	Gap
d f8/h9	D H8	L+0.2	W	Z		d f8/h9	D H8	L+0.2	W	Z
8-20	d+3.1	2.5	1.55	1-2		200-999.9	d+5	25	2.5	8-33
10-50	d+3.1	4	1.55	1-3		1000-4200	d+5	25	2.5	33-134
15-140	d+5	5.6	2.5	2-5		280-999.9	d+8	25	4	10-33
20-220	d+5	9.7	2.5	2-9		1000-2200	d+8	25	4	33-70
80-400	d+5	15	2.5	4-15

RCSF-1 Self-lubricating Guide Ring Parameters
Parameters			RCSF-1		RCSF-1D	RCSF-1B	RCSF-1S
			Lead-free bushings		Hydraulic special sleeve	Bronze base bushing	Stainless steel corrosion resistant sleeve
Maximum bearing pressure (dynamic)			140N/mm²		140N/mm²	140N/mm²	140N/mm²
Maximum bearing pressure (static)			250N/mm²		250N/mm²	250N/mm²	250N/mm²
Oscillating motion			60N/mm²		60N/mm²	60N/mm²	60N/mm²
Maximum sliding speed (oil lubrication)			<2m/s		<2m/s	<2m/s	<2m/s
Friction coefficient μ	Dry friction		0.04~0.2		0.04~0.18	0.03~0.18	0.04~0.2
	Oil lubrication		0.02~0.08		0.02~0.08	0.02~0.08	0.02~0.08
Maximum PV value (dry)			3.6N/mm².m/s		3.8N/mm².m/s	4.3N/mm².m/s	3.6N/mm².m/s
Maximum PV value (oil)			30N/mm².m/s		30N/mm².m/s	30N/mm².m/s	30N/mm².m/s
Operating temperature			-195℃~+280℃		-195℃~+280℃	-195℃~+280℃	-195℃~+280℃
Thermal conductivity			42w/m.k		42w/m.k	42w/m.k	42w/m.k
Linear expansion coefficient			11*10-6/k		11*10-6/k	18*10-6/k	15*10-6/k
RCFB type bronze guide ring parameter table
Parameter		RCFB090		RCFB092		RCFB09G
Density		8.9g/cm³		8.9g/cm³		8.9g/cm³
Compressive strength		470N/mm²		470N/mm²		470N/mm²
Thermal conductivity		60w/m.k		60w/m.k		58w/m.k
Linear expansion coefficient		18.5*10-6/k		18.5*10-6/k		18.5*10-6/k
Hardness		90~120HB		90~120HB		90~120HB
Elongation		55%		55%		55%
Material name		CuSn8P		CuSn8P		CuSn8P
Other optional materials		CuSn6.5P		CuSn6.5P		CuSn6.5P