Super Cell Rubber Fender · Cylindrical Cell · 5 Reaction Grades · ISO 9001

Super Cell Rubber Fenders for High-Energy Berths

We manufacture super cell rubber fenders whose cylindrical cell disperses the berthing energy evenly and absorbs up to 70% of the impact, protecting the largest cargo ships, tankers, and passenger vessels. They come in 13 sizes from 500H to 3000H and in five reaction grades — RE, RS, RH, RO, and RL — so the same energy can be met at the reaction force your quay allows, rated at 52.5% and 55% compression. The body is high-strength natural and synthetic rubber with a low-friction UHMW-PE front pad, a design life of more than 10 years, and manufacture under an ISO 9001 quality management system. We have made marine fenders in Qingdao since 2005, and we size the cell and grade against your berthing energy.

Request Fender Sizing See Performance Table

500H–3000H

Size Range

13 sizes

≤70%

Impact Energy Absorbed

of berthing

Reaction Grades

RE / RS / RH / RO / RL

>10

Design Life

years

Applications & Working Principle

Where Super Cell Rubber Fenders Earn Their Place

Super cell fenders suit high-energy berths for the largest vessels, where you need a lot of energy absorbed and the reaction force tuned to the quay — provided the foundation can take the bolts and the grade is confirmed. We use them on commercial and naval berths and offshore platforms, and we size the cell and the reaction grade from your berthing energy rather than from height alone.

Diagram: a super cell fender buckles to absorb high energy at a controlled reaction force

How the cell absorbs energy

The cylindrical cell deflects under the vessel and disperses the energy evenly, absorbing up to 70% of the impact while spreading the load so the hull and dock are not point-loaded. A low-friction UHMW-PE front pad lets the hull slide against the face, reducing wear during the contact.

What sets the cell apart is the choice of reaction grade. The same size is offered in five rubber grades, from ultra-high to low reaction, so we can meet your berthing energy at the reaction force an old or sensitive quay can take — rather than forcing one fixed reaction on every berth.

Why a cell over a cone or cylindrical fender. The cell delivers high energy in a compact, single-cell unit and lets you tune the reaction force through the rubber grade, which suits high-energy berths with a tight reaction limit. For very high energy at low reaction a super cone is the alternative; for simple, low-energy berths a cylindrical fender is simpler and cheaper.

Commercial ports & terminals

High energy absorption for the largest cargo, container, and passenger vessels, dispersing the berthing force to protect hull and quay.

Military & naval facilities

Large naval vessels and submarines, handled with high impact capacity and corrosion-resistant rubber for long, stable service.

Offshore platforms & oil and gas

Protecting platforms against vessel impact in harsh sea states, with UV and seawater resistance for a design life over 10 years.

Performance & Sizing

Reaction Grades, Energy & Angular Correction

Super cell fenders are selected on berthing energy, then on the reaction grade that keeps reaction force within the quay’s limit. Every grade carries its own reaction and energy figure, at both the 52.5% rated deflection and the 55% maximum deflection. All values carry a ±10% tolerance and are corrected for berthing angle, site temperature, and impact duration by the PIANC factors below. Hull pressure is confirmed separately against the front-panel contact area.

Reading the table — five grades, two deflection points. RL, RO, RH, RS, and RE run from low to extreme-high reaction. Each grade gives a reaction force (R, kN) and an energy absorption (E, kN·m) at the 52.5% rated deflection, and a second pair at the 55% maximum deflection. Pick the grade that meets your energy inside the reaction limit your quay allows — at the same size, RE carries roughly twice the reaction of RL.

Rated performance by grade — 52.5% design / 55% maximum deflection

Grade	Value	500H	630H	800H	1000H	1150H	1250H	1450H	1600H	1700H	2000H	2250H	2500H	3000H
RL — Low	R @52.5% (kN)	86	138	211	349	462	546	735	894	1009	1398	2085	2574	—
	E @52.5% (kN·m)	18	38	75	153	233	299	468	628	753	1227	2060	2826	—
	R @55% (kN)	99	147	225	372	491	581	781	950	1073	1485	2216	2737	—
	E @55% (kN·m)	19	40	78	163	247	316	495	665	798	1299	2180	2992	—
RO — Standard	R @52.5% (kN)	108	172	275	436	578	682	918	1120	1262	1746	2454	3028	3750
	E @52.5% (kN·m)	23	47	96	191	295	375	585	786	945	1535	2425	3330	4300
	R @55% (kN)	125	182	292	463	614	725	976	1189	1342	1856	2607	3220	4217
	E @55% (kN·m)	25	50	102	203	309	396	619	832	997	1624	2566	3520	4635
RH — High	R @52.5% (kN)	140	224	355	567	750	886	1193	1453	1640	2270	3188	3937	4482
	E @52.5% (kN·m)	30	62	125	249	379	486	760	1020	1224	1994	3150	4322	5160
	R @55% (kN)	160	237	378	603	798	942	1269	1544	1743	2413	3390	4182	5099
	E @55% (kN·m)	32	67	132	264	401	516	804	1080	1300	2111	3336	4576	5510
RS — Super high	R @52.5% (kN)	162	258	412	655	865	1022	1376	1676	1892	2619	3679	4543	—
	E @52.5% (kN·m)	36	72	145	287	437	561	876	1177	1413	2300	3628	4987	—
	R @55% (kN)	187	274	437	696	920	1087	1464	1781	2012	2783	3911	4829	—
	E @55% (kN·m)	38	76	153	304	463	594	928	1247	1495	2435	3848	5280	—
RE — Extreme high	R @52.5% (kN)	182	290	464	737	975	1153	1551	1885	2131	2941	4145	5118	—
	E @52.5% (kN·m)	40	80	163	324	492	632	987	1326	1591	2591	4095	5618	—
	R @55% (kN)	210	309	493	784	1037	1225	1649	2007	2266	3136	4406	5441	—
	E @55% (kN·m)	43	85	173	343	521	669	1045	1405	1685	2743	4337	5949	—

Reaction force (R) and energy absorption (E) per fender, at the 52.5% rated deflection and the 55% maximum deflection. Performance tolerance ±10%. The 3000H is produced in the RO and RH grades only. Product performance can be tailored to project requirements.

PIANC correction factors

Rated figures are corrected for berthing angle, site temperature, and impact duration before the fender is confirmed.

Angular factor (AF)		Temperature factor (TF)		Velocity factor (VF)
Angle (°)	AF	Temp (°C)	TF	Time (s)	VF
0	1.000	+50	0.882	1	1.005
3	0.977	+40	0.926	2	1.002
5	0.951	+30	0.969	3	1.001
8	0.909	+23	1.000	4	1.001
10	0.883	+10	1.056	5	1.000
15	0.810	0	1.099	6	1.000
20	0.652	-10	1.143	8	1.000
		-20	1.186	≥10	1.000
		-30	1.230

Reference angle 0° (AF = 1.000) and reference temperature +23 °C (TF = 1.000). The angular factor falls steadily with angle, reaching 0.652 at 20°; the temperature factor rises as the rubber stiffens in cold weather. The velocity factor is close to unity across the range, so impact duration has little effect on this fender type.

Deflection response curve

Reaction and energy do not rise linearly with deflection. The cell reaches close to its full reaction early — about 98% by 25% deflection — then flattens and dips slightly before rising again, while energy continues to build. These are the percentages of the rated (52.5%) figures at intermediate deflections.

Deflection H (%)	0	5	10	15	20	25	30	35	40	45	50	52.5	55
Reaction R (%)	0	30	58	80	93	98	99	97.5	95	96	97	100	106
Energy E (%)	0	2	8	15	25	37	50	60	70	88	97	100	106

Worked example: at 35% deflection, R = 97.5% and E = 60% of the rated figures. For a fender rated 1,000 kN / 500 kN·m, that gives 975 kN and 300 kN·m.

The most common sizing mistake. Reading the rated table straight and ignoring the grade, the angle, and the ±10% tolerance. At the same size, RE carries roughly double the reaction of RL; at 20° the angular factor is down to 0.652; and a cold berth stiffens the rubber by up to 23%. We pick the size and grade against your energy, apply the PIANC factors, then check reaction force and hull pressure.

Assembly & Accessories

Frontal Panel, Anchors, Chains & Clearances

A cell fender system is the rubber body plus the frontal panel, the facing pad, the fasteners, the cast-in anchors, and the chain system. Each part has a job, and all of it is sized together from the cell model.

System components & materials

Component	Function	Typical material
Rubber fender	Absorbs ship impact energy, protecting dock and vessel.	Rubber, Q235
Precast nut & bolt	Fixes the fender to the dock.	Stainless steel, Q235 HDG
U-anchor	Holds the chains.	Q235 painted or HDG
Frontal panel	Bears the reaction, increases hull contact area and lowers hull pressure — below 25 t/m² where required.	Q235 / Q355 painted, or hot zinc/aluminium sprayed
Facing pad	Reduces the friction coefficient and protects the hull.	UHMW-PE
Connection bolt & nut	Fixes the fender to the frontal panel and other parts.	Stainless steel, Q235 HDG
Weight chain	Supports the panel weight and prevents the system drooping.	Q235 / CM490 HDG or painted
Tension chain	Limits deflection when the upper part of the fender is loaded.	Q235 / CM490 HDG or painted
Shear chain	Restrains shear deformation of the fender system.	Q235 / CM490 HDG or painted

Precast nut — Type I (new concrete)

Model	MD	H	J	S	N	n	M	P	t	V	r	a	b	e	T	L	G
500H	M24	17	70	55	60	22	83	25	5	28	15	75	100	36	6-10	300	75
630H	M30	19	75	60	65	20	110	33	5	34	15	75	105	38	8-12	330	85
800H	M33	23	85	70	70	25	117	35	5	36	15	85	120	42	8-12	360	85
1000H	M39	26	95	75	80	26	148	40	6	43	25	85	125	49	8-12	430	95
1150H	M42	26	100	80	85	28	151	43	6	46	25	85	125	55	12-16	500	105
1250H	M45	30	110	90	90	31	153	45	6	49	30	95	140	59	12-16	500	125
1450H	M52	35	120	95	100	31	158	50	6	56	30	100	150	69	12-16	570	135
1600H	M52	35	120	95	100	34	158	50	6	56	30	100	150	69	12-16	570	140
1700H	M56	35	135	110	110	40	165	55	8	63	30	105	165	75	16-20	620	140
2000H	M64	40	150	125	116	38	165	58	8	70	40	125	190	79	16-20	700	150
2250H	M64	40	150	125	120	43	195	60	8	70	40	125	190	79	16-20	700	150
2500H	M64	40	170	125	125	50	202	65	10	70	50	125	190	79	16-20	700	175
3000H	M76	50	190	145	140	55	207	70	10	84	50	135	210	95	20-24	800	175

All dimensions in mm. Hex bolt (MD, H, J, S), L-washer (N, n, M, P, t, V, r), precast nut (a, b, e), anchor rod and plate (T, L, G). Used for installing fenders into newly poured concrete.

Anchor bolt — Type II (existing concrete)

Model	MD	A	L	ΦS	T (nut)	N	n	M	P	t	V	r
500H	M24	60	280	30	22	60	22	83	25	5	28	15
630H	M30	70	360	38	26	65	20	110	33	5	34	15
800H	M33	75	400	42	28	70	25	117	35	5	36	15
1000H	M39	85	460	50	32	80	26	148	40	6	43	25
1150H	M42	95	510	55	34	85	28	151	43	6	46	25
1250H	M45	105	550	60	36	90	31	153	45	6	49	30
1450H	M52	115	630	65	42	100	31	158	50	6	56	30
1600H	M52	115	630	65	42	100	34	158	50	6	56	30
1700H	M56	125	680	68	45	110	40	165	55	8	63	30
2000H	M64	130	780	75	51	116	38	165	58	8	70	40
2250H	M64	140	780	75	51	120	43	195	60	8	70	40
2500H	M64	150	780	75	51	125	50	202	65	10	70	50
3000H	M76	180	940	88	64	140	55	207	70	10	84	50

All dimensions in mm. Anchor bolt (MD, A, L, ΦS), nut (T), L-washer (N, n, M, P, t, V, r).

Cast-in U-anchor & chain system

Model	Φd	R	L	A	T	ΦG	Chain links	Shackle	Tensioner
500H	40	70	600	50	20~30	100	Φ20.5	Φ22	M24
630H	40	70	600	50	20~30	100	Φ20.5	Φ22	M24
800H	50	80	650	50	20~30	110	Φ26	Φ28	M30
1000H	55	90	730	50	20~30	120	Φ28	Φ32	M33
1150H	60	100	780	50	25~35	140	Φ32	Φ35	M36
1250H	60	100	780	50	25~35	140	Φ34	Φ38	M42
1450H	60	100	780	70	25~35	140	Φ36	Φ38	M42
1600H	65	105	830	70	25~35	150	Φ38	Φ45	M48
1700H	65	105	830	70	25~35	150	Φ40	Φ45	M48
2000H	70	115	880	70	25~35	160	Φ42	Φ45	M48
2250H	70	115	880	70	25~35	160	Φ42	Φ45	M48
2500H	80	120	930	70	25~35	160	Φ46	Φ50	M56
3000H	80	120	930	80	25~35	160	Φ46	Φ50	M56

U-anchor dimensions in mm. Chain material Q235 HDG or Gr.U2 HDG; shackles Gr.S HDG; tensioners Q235 / GR8.8 HDG. Stud-link and open-link chains, bow and dee shackles (G-2130, G-209, G-210), tensioners, and rubber shock absorbers are available. All chain and accessory information is for guidance only — every chain design should be checked for suitability in the intended application.

Minimum clearances

There must be enough space around and between the cell fenders and the steel panel to let them deflect without interference.

Model	Edge A (mm)	Centres B (mm)
500H	510	700
630H	600	880
800H	700	1120
1000H	850	1500
1150H	990	1730
1250H	1060	1870
1450H	1200	2180
1600H	1270	2400
1700H	1470	2550
2000H	1560	2880
2250H	1710	3360
2500H	1910	3730
3000H	2240	4500

Distances are for guidance — contact us if in doubt.

Panel weight support

Cell fenders can support significant static weight. These limits give the permitted frontal-panel weight before additional support chains are required, and they differ by cell height.

Cell height	Grade	Horizontal, single or multiple (n ≥ 1)	Vertical, multiple (n ≥ 2)
H ≤ 800	RL — Low	W_H ≤ n × 0.95 × w	W_V ≤ n × 1.2 × w
	RO — Standard	W_H ≤ n × 1.1 × w	W_V ≤ n × 1.45 × w
	RH — High	W_H ≤ n × 1.3 × w	W_V ≤ n × 1.75 × w
H ≥ 1000	RL — Low	W_H ≤ n × 10 × w^0.6	W_V ≤ n × 13.5 × w^0.6
	RO — Standard	W_H ≤ n × 15 × w^0.6	W_V ≤ n × 19 × w^0.6
	RH — High	W_H ≤ n × 19 × w^0.6	W_V ≤ n × 23.5 × w^0.6

n = number of cell fenders; w = weight of one fender; W_H = panel weight for a horizontal arrangement; W_V = panel weight for a vertical arrangement. Where the panel exceeds these limits, secondary support chains are added.

Know your berthing energy and reaction limit?

Send the vessel, approach speed, angle, and quay limit — we pick the cell size and reaction grade.

Get a Sized Cell →

Construction & Dimensions

Construction, Mounting & Geometry

Cutaway of a super cell rubber fender with embedded flanges and a UHMW-PE front pad

Natural and synthetic rubber, UHMW-PE face

The cell is moulded from high-strength natural and synthetic rubber for resistance to UV, seawater, and abrasion, with a design life of more than 10 years. The front face carries a low-friction UHMW-PE pad that lowers the friction against the hull and extends the life of the face.

The cell bolts to a solid foundation with 4 to 12 anchors depending on size, from M24 at the 500H to M76 at the 3000H, through bolt holes of 32 to 90 mm. Cast-in precast nuts (Type I) suit new concrete and full-shank anchor bolts (Type II) suit existing concrete. We confirm the front panel, hardware, and bolt pattern with the structure rather than leave them generic.

Model	H	ΦW	ΦB	T	Φd	Anchors	Weight (kg)
500H	500	650	550	25	32	4-M24	112
630H	630	840	700	30	39	4-M30	231
800H	800	1050	900	30	40	6-M33	410
1000H	1000	1300	1100	35	47	6-M39	822
1150H	1150	1500	1300	40	50	6-M42	1220
1250H	1250	1650	1450	45	53	6-M45	1488
1450H	1450	1850	1650	47	61	6-M52	2330
1600H	1600	2000	1800	50	61	8-M52	3022
1700H	1700	2100	1900	55	66	8-M56	3730
2000H	2000	2200	2000	55	74	8-M64	5258
2250H	2250	2550	2300	60	74	10-M64	7452
2500H	2500	2950	2700	70	74	10-M64	10755
3000H	3000	3350	3150	85	90	12-M76	18582

Dimensions in mm, weight per fender. H is the cell height, ΦW the outer flange diameter, ΦB the bolt-circle diameter, T the flange thickness, and Φd the bolt-hole diameter. Anchors are given as count × thread size, from 4-M24 at 500H to 12-M76 at 3000H.

Where This Is Not the Right Choice

When a Different Fender Fits Better

Super cell fenders are one option in our wider rubber fenders range, built for high-energy fixed berths. They are not the right fender for every job, so here is where something else fits better.

You need very high energy at low reaction

Where the priority is the highest energy at the lowest reaction in a tapered unit, a super cone rubber fender is the alternative high-performance type.

You have a simple, low-energy berth

For general berths and workboats that do not need the cell’s energy or grade choice, a cylindrical rubber fender is simpler and cheaper.

You have a floating berth

For a floating fender that rises with the tide rather than a fixed bolted one, a pneumatic fender or foam filled fender suits better.

An honest boundary. The rated tables assume 52.5% deflection at +23 °C and square-on contact, and carry a ±10% tolerance. A real berth is colder or warmer, the vessel arrives at an angle, and hull pressure depends on the panel area — none of which the table shows. We work the corrected figures and the hull pressure for your case before contract rather than quote a single rated number.

FAQ

Super Cell Rubber Fenders — Frequently Asked Questions

What do RE, RS, RH, RO and RL mean?

Five rubber grades from low (RL) through standard (RO), high (RH), super-high (RS), to extreme-high (RE) reaction. Each carries its own reaction and energy figure, so the same cell size can meet your berthing energy at the reaction force your quay can take — RE is roughly double RL at the same size.

How much energy does a super cell fender absorb?

The cell is rated at 52.5% design deflection with a 55% maximum, and both points are in the performance table. Each of the five grades carries its own energy figure — at 1000H, for instance, energy runs from 153 kN·m in RL to 324 kN·m in RE.

How does the berthing angle change performance?

Performance derates with angle: the angular factor is 0.883 at 10° and 0.652 at 20°. We apply the PIANC angular factor together with the temperature and velocity factors, and size to the actual berthing angle rather than read the table straight.

What is the front pad made of?

A low-friction UHMW-PE front pad, which lowers the friction against the hull and extends the life of the fender face. The mounting panel and hardware are confirmed with the structure for your berth.

How long do they last and what maintenance is needed?

The design life is more than 10 years, with the natural and synthetic rubber resisting UV, seawater, and abrasion. They need only simple maintenance and regular inspections of the rubber, the front pad, and the bolts.

When should I use a cone or cylindrical fender instead?

Use a super cone for the highest energy at the lowest reaction in a tapered unit, and a cylindrical fender for simple, low-energy berths and workboats. The cell suits high-energy berths where you want to tune the reaction force through the rubber grade.

Get Started · Request Sizing

Pick the cell and grade on energy, reaction and angle

A cell fender is right when its energy covers your berthing energy and the grade keeps reaction within the quay’s limit, corrected for angle. Send us the vessel and berth and we return the size, grade, and corrected performance — not a single rated figure.

Manufacturing since 2005 ISO 9001 quality system 5 reaction grades

Request Fender Sizing Michael@maritimeworlds.com → WhatsApp: +86 13356893106 →

What to send us

6 inputs

Vessel displacement & sizeThe largest vessel the fender must handle, by displacement and dimensions.

Approach speed & berthing angleBerthing speed and the expected approach angle, for the angular correction.

Reaction & hull pressure limitsThe quay’s reaction limit and the hull’s pressure limit, which set the grade.

Temperature rangeSite temperature range, so we apply the temperature correction factor.

Foundation & panelThe structure for the bolts and whether you need a front panel and pad.

DocumentationAny approval or test documentation your project requires.

You get back: a recommended cell size and reaction grade with energy absorption and reaction force corrected for angle, plus the bolt pattern and front pad.