Uflex Hydraulic Steering System Guide
| Appropriate hydraulic steering system selection |
| All the components of Ultraflex hydraulic steering systems are made
specifically for the marine environment, using materials and working process
which offer long life and safety for the most extreme conditions. |
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HOW THE SYSTEM WORKS
A manual hydraulic steering system consists of a helm which pumps hydraulic
fluid through two hoses to a hydraulic cylinder which is mounted to an
engine or rudder.
While steering, hydraulic oil is pushed through hoses into two chambers
within the hydraulic cylinder. Depending upon which direction you steer, one
of the two chambers is filled or relieved of oil, thereby changing the
course of the boat.
While not actively steering, the torque (hydraulic pressure in the hoses) is
held by a one way valve in the helm, which eliminates the transmission of
the torque "feedback" to the steering wheel.
The number of turns from full lock-to-lock has a relationship to ease of
steering. Generally speaking, the more number of turns lock-to-lock the
easier the boat will be to steer and vice versa.
Because of the variety of applications and handling characteristics of
boats, the number of turns lock to lock is often a matter of personal
preference. As a general rule, the first priority should be ease of
steering, then number of turns lock to lock. However, it is not recommended
to have fewer than 4 turns lock to lock on high performance boats.
To calculate number of turns lock to lock simply divide the cubic inch
displacement of the cylinder by the cubic inch displacement of the helm.
Other factors that can significantly affect the amount of effort to steer
the system can be:
Fittings
introduced between the helm and cylinder that restrict fluid efficiency
Oil
viscosity
Type
of hose and inside hose diameter.
Vessel
speed
Trim
angle
Rudder
dimension, or engine power
Propeller
selection
Hull
type (displacement, planing, etc.)
Sea
conditions |
| |
| Hydraulic cross reference
guide - Cylinders |
|
OUTBOARD CYLINDERS |
UFLEX
PART No. |
TELEFLEX®
CROSS REFERENCE |
DESCRIPTION |
| UC128OBF 1 |
HC5345 or HC5358 |
CYLINDER, 1.38" BORE, 7.8" STROKE, FRONT MOUNT -
# 1 LINK ARM |
| UC128OBF 2 |
HC5345 or HC5358 |
CYLINDER, 1.38" BORE, 7.8" STROKE, FRONT MOUNT -
# 2 LINK ARM |
| UC128OBF 3 |
HC5345 or HC5358 |
CYLINDER, 1.38" BORE, 7.8" STROKE, FRONT MOUNT -
# 3 LINK ARM |
| UC128POBF 1 |
HC5345 or HC5358 |
CYLINDER, 1.38" BORE, 7.8" STROKE, FRONT MOUNT -
PORT ENGINE CYLINDER
- # 1 LINK ARM |
| UC128POBF 2 |
HC5345 or HC5358 |
CYLINDER, 1.38" BORE, 7.8" STROKE, FRONT MOUNT -
PORT ENGINE CYLINDER
- # 2 LINK ARM |
| UC128POBF 3 |
HC5345 or HC5358 |
CYLINDER, 1.38" BORE, 7.8" STROKE, FRONT MOUNT -
PORT ENGINE CYLINDER
- # 3 LINK ARM |
| UC128-SVS 1 |
HC5345 or HC5358
or HC6750
or HC6751
or HC6752 |
HIGH PERFORMANCE CYLINDER, 1.38" BORE, 7.8"
STROKE, FRONT MOUNT -
# 1 LINK ARM |
| UC128-SVS 2 |
HC5345 or HC5358
or HC6750
or HC6751
or HC6752 |
HIGH PERFORMANCE CYLINDER, 1.38" BORE, 7.8"
STROKE, FRONT MOUNT -
# 2 LINK ARM |
| UC128P-SVS 1 |
HC5345 or HC5358
or HC67502
or HC6751
or HC675 |
HIGH PERFORMANCE CYLINDER, 1.38" BORE, 7.8"
STROKE,
FRONT MOUNT-PORT ENGINE CYLINDER- # 1 LINK ARM |
| UC128P-SVS 2 |
HC5345 or HC5358
or HC6750
or HC6751
or HC6752 |
HIGH PERFORMANCE CYLINDER, 1.38" BORE, 7.8"
STROKE,
FRONT MOUNT-PORT ENGINE CYLINDER- # 2 LINK ARM |
| UC94OBF 1 |
HC4645H or
C4647H or
HC4658H |
CYLINDER, 1.18" BORE, 7.3" STROKE, FRONT MOUNT
(150 HORSEPOWER AND UNDER) - # 1 LINK ARM |
| UC94OBF 3 |
HC4645H |
CYLINDER, 1.18" BORE, 7.3" STROKE, FRONT MOUNT
(150 HORSEPOWER AND UNDER) - # 3 LINK ARM |
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| INBOARD CYLINDERS |
UFLEX
PART No. |
TELEFLEX®
CROSS REFERENCE |
DESCRIPTION |
| UC116-I |
HC5312 |
ALUMINUM CYLINDER, 1.25" BORE, 7" STROKE, BALL
JOINT |
| UC168-I |
HC5314 or HC5318 |
ALUMINUM CYLINDER, 1.57" BORE, 7" STROKE, BALL
JOINT |
| UC215-I |
HC5313 |
ALUMINUM CYLINDER, 1.57" BORE, 9" STROKE, BALL
JOINT |
| UC293-I |
HC5314 |
BRASS CYLINDER, 2.0" BORE, 7" STROKE, BALL JOINT |
| UC378-I |
HC5378 or HC5379 |
BRASS CYLINDER, 2.0" BORE, 9" STROKE, BALL JOINT |
| I-B648 |
HC5378 or HC5379 |
CYLINDER, 2.36" BORE, 11" STROKE, BALL JOINT |
|
| SIDEMOUNT OUTBOARD CYLINDER |
UFLEX
PART No. |
TELEFLEX®
CROSS REFERENCE |
DESCRIPTION |
| UC132-OBS |
HC5370 |
CYLINDER, 1.26" BORE, 8.0" STROKE, SIDE MOUNT |
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| STERNDRIVE APPLICATION CYLINDERS |
UFLEX
PART No. |
TELEFLEX®
CROSS REFERENCE |
DESCRIPTION |
| UC133-IOB |
HC5330 or HC5332 |
CYLINDER, 1.26" BORE, 8" STROKE, BALANCED |
| UC132-OBS |
HC5328 |
CYLINDER, 1.26" BORE, 8" STROKE, UNBALANCED |
|
| HYDRAULIC PARTS AND ACCESSORIES |
UFLEX
PART No. |
TELEFLEX®
CROSS REFERENCE |
DESCRIPTION |
| BBUSTER |
POWER PURGE® |
PURGING SYSTEM FOR UFLEX HYDRAULIC STEERING
SYSTEMS |
| KIT F |
HA5450 |
REMOTE FILL KIT OF UP TILT HELMS AND UP REAR
MOUNT HELMS |
| OIL 15 |
HA5430 |
UFLEX HYDRAULIC OIL, 1 QUART |
| X64 |
HA5417 or HA5418 |
SQUARE BEZEL FOR HYDRAULIC HELMS |
| X57 |
HA5417 or HA5419 |
ROUND BEZEL FOR HYDRAULIC HELMS |
| KIT OB-LL |
HO51LL |
PREMADE HYDRAULIC HOSES |
| KIT OB BHBR-LL |
HO81LL |
PREMADE HYDRAULIC HOSES WITH BULKHEAD BEND
RESTRICTORS |
| KITOB SVS-LL |
HO81LL |
TWO FLEXIBLE HOSES SILVER STEER HIGH PERFORMANCE |
| TU95-LL |
HT5LL |
NYLON TUBE IN 1 FT. INCREMENTS (NOT RECOMMENDED
FOR OUTBOARD
APPLICATIONS) |
| KIT 95 2S |
HF5501 |
ADDITIONAL STATION FITTING KIT FOR 3/8" NYLON OR
COPPER TUBE |
|
| Hydraulic cross reference guide -
Packaged systems and Helms |
|
PACKAGED SYSTEMS |
UFLEX
MODEL
NUMBER |
TELEFLEX®
CROSS REFERENCE |
DESCRIPTION |
| HYCO 1.0 |
HK4200a - BayStar® |
FRONT MOUNT OUTBOARD SYSTEM FOR 150 HP AND LESS |
| PROTECH 1.0 |
HK6300 or HK6400 SeaStar® |
FRONT MOUNT OUTBOARD SYSTEM |
| PROTECH 2.0 |
HK6300 or HK6400 SeaStar® |
FRONT MOUNT OUTBOARD SYSTEM |
| PROTECH 3.0 |
HK6300 or HK6400 SeaStar® |
FRONT MOUNT OUTBOARD SYSTEM |
| PROTECH 1T |
HK6400TC or HK6400TS
or HK6500YTC SeaStar® |
FRONT MOUNT OUTBOARD SYSTEM WITH TILT HELM |
| PROTECH 2T |
HK6400TC or HK6400TS
or HK6500YTC SeaStar® |
FRONT MOUNT OUTBOARD SYSTEM WITH TILT
HELM PACKAGE |
| PROTECH 3T |
HK6400TC or HK6400TS
or HK6500YTC SeaStar® |
FRONT MOUNT OUTBOARD SYSTEM WITH TILT HELM |
|
HELMS |
UFLEX
MODEL
NUMBER |
TELEFLEX®
CROSS REFERENCE |
DESCRIPTION |
| UP20FM |
HH5270 |
FRONT MOUNT HELM, 1.2 CU.IN. 3/4" ANODIZED ALUM.
TAPERED SHAFT |
| UP25FM |
HH5271 |
FRONT MOUNT HELM, 1.5 CU.IN. 3/4" TAPERED
STAINLESS STEEL SHAFT |
| UP28FM |
HH5271 |
FRONT MOUNT HELM, 1.7 CU.IN. 3/4" TAPERED
STAINLESS STEEL SHAFT |
| UP33FM |
HH5273 |
FRONT MOUNT HELM, 2.0 CU.IN. 3/4" TAPERED
STAINLESS STEEL SHAFT |
| UP39FM |
HH5272 |
FRONT MOUNT HELM, 2.4 CU.IN. 3/4" TAPERED
STAINLESS STEEL SHAFT |
| UP20T |
HH5291 or HH5740
or HH4315 |
TILT HELM, 1.2 CU.IN. 3/4" TAPERED SS SHAFT (X52
TILT INCLUDED & KIT F
OPTIONAL) |
| UP25T |
HH5291 or HH5741
or HH6191 or HH6491
or HH6541 |
TILT HELM, 1.5 CU.IN. 3/4" TAPERED SS SHAFT (X52
TILT INCLUDED & KIT F
OPTIONAL) |
| UP28T |
HH5291 or HH5741
or HH6191 or HH6491
or HH6541 |
TILT HELM, 1.7 CU.IN. 3/4" TAPERED SS SHAFT (X52
TILT INCLUDED & KIT F
OPTIONAL) |
| UP33T |
HH5290 or HH5774
or HH6145 or HH6490 |
TILT HELM, 2.0 CU.IN. 3/4" TAPERED SS SHAFT (X52
TILT INCLUDED & KIT F
OPTIONAL) |
| UP39T |
HH5292 or HH5742
or HH6192 or HH6492
or HH6542 |
TILT HELM, 2.4 CU.IN. 3/4" TAPERED SS SHAFT (X52
TILT INCLUDED & KIT F
OPTIONAL) |
| UP28R |
HH5261 |
BACK MOUNT 1.7 CU.IN. 3/4" TAPERED SS SHAFT *(KIT
F OPTIONAL) |
| UP33R |
HH5262 |
BACK MOUNT 2.0 CU.IN. 3/4" TAPERED SS SHAFT *(KIT
F OPTIONAL) |
| UP39R |
HH5263 |
BACK MOUNT 2.4 CU.IN. 3/4" TAPERED SS SHAFT *(KIT
F OPTIONAL) |
| UP56R |
HH5263 |
BACK MOUNT 3.4 CU.IN. 3/4" TAPERED SS SHAFT |
| UP28F-SVS |
HH5770 |
1500 PSI-HIGH PERFORMANCE FRONT MOUNT HELM, 1.7
CU.IN. 3/4" TAPERED
SS SHAFT |
| UP33F-SVS |
HH5770 |
1500 PSI-HIGH PERFORMANCE FRONT MOUNT HELM, 2.0
CU.IN. 3/4" TAPERED
SS SHAFT |
| UP39F-SVS |
HH5770 |
1500 PSI-HIGH PERFORMANCE FRONT MOUNT HELM, 2.4
CU.IN. 3/4" TAPERED
SS SHAFT |
| UP28T-SVS |
HH5290 or HH5774
or HH6189 |
1500 PSI-HIGH PERFORMANCE TILT HELM, 1.7 CU.IN.
TAPERED SS *(X52 TILT &
KIT F OPTIONAL) |
| UP33T-SVS |
HH5290 or HH5774
or HH6190 |
1500 PSI-HIGH PERFORMANCE TILT HELM, 2.0 CU.IN.
TAPERED SS *(X52 TILT &
KIT F OPTIONAL) |
| UP39T-SVS |
HH5290 or HH5774
or HH6188 |
1500 PSI-HIGH PERFORMANCE TILT HELM, 2.0 CU.IN.
TAPERED SS *(X52 TILT &
KIT F OPTIONAL) |
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WARNING:
This product can expose you to chemicals including Di-n-hexyl Phthalate (DnHP)
which is known to the State of California to cause reproductive harm, and
Vinyl Chloride which is known to the State of California to cause cancer. For
more information go to 
