Group: Brevini
Catalog excerpts
IT’S_COMMUNICATION - www.itsol.it Slewing rings GENERAL SLEWING RINGS CATALOGUE General catalogue LEONESSA BREVINI (YANCHENG) SLEWING BEARINGS CO.,LTD No. 65 East Yandu Road, Economic Development Zone, Yancheng, Jiangsu, P.R.C., 224007 Office +86 515 89026300 Fax +86 515 89026366 www.leonessabrevini.com LA LEONESSA S.P .A. Viale Santa Maria, 90 25013 CARPENEDOLO (Brescia) Italy Tel. +39 030 9965435 Fax. +39 030 9965629 sales@laleonessa.it www.laleonessa.it
Open the catalog to page 1Introduction Company profile Quality Main applications Range of products General concepts Load trasmission Connection structure Load factors choice Bolts Calculation example Dynamic loads Data request form Slewing ring features Gears Heat treatments Materials Dimensional tolerances Rotation torques Assembly and maintenance Assembly Maintenance Product range Slewing ring - 1 row of balls Slewing ring - 2 rows of balls Slewing ring - 1 row of rollers LEOflE^A brewini
Open the catalog to page 2Company profile Leonessa Brevini As worldwide leading manufacturer, Leonessa Brevini offers its experience in the design and manufacture of slewing rings.
Open the catalog to page 3Quality Leonessa Brevini general slewing rings catalogue shows the entire production range and aims to be a valuable aid in choosing the most suitable slewing ring. Advanced technology and continuous improvement are the keys of the Company's constant evolution. The range includes rings with diameters up to 2500 mm with the following features: one row of balls or rollers, two rows of balls. All products are available with internal or external gear, or without gear. The slewing rings are manufactured exclusively through numerical control machinery. Induction hardening of the bearing raceways...
Open the catalog to page 4Range of products Leonessa Brevini slewing rings are used in several fields of application, amongst which: • Lifting equipment: Mobile cranes, Gantry cranes, truck cranes, Aerial platforms, Stackers. • Building equipment: Concrete pumps, Demolition equipments, Dumpers, Multi purpose lifting machines, Construction cranes, Concrete mixers. • Automation: Robots, Transportation lines, Automation systems. • Ecology: Water treatment plants. • Forestry machinery: Boogie axles, Forestry cranes, Forest havesters. • Rotative machinery: Bottling, Packaging equipments, Palletizers. • Earth moving...
Open the catalog to page 5Slewing ring choice General concepts The following information helps in choosing the best slewing ring. General indications and formulas, combined with drawings and load charts, offer the best working tool. Leonessa Brevini Technical Department is available to verify the suitability.
Open the catalog to page 6Load transmission Connecting structure Slewing rings are designed and produced to connect two parts of a machine, enable a reciprocal rotation and the transmission of axial loads, radial loads and tilting moment in various combinations. For this purpose, it is defined: Axial load FA: sum of all forces acting parallel to the rotation axis of the slewing ring. The slewing rings are normally mounted against the connecting structure, with forces acting in compression; in the case of axial load in traction it is necessary to contact the Technical Department of Leonessa Brevini for further...
Open the catalog to page 7Coefficient of application The coefficient of application is defined according to the particular performance of the slewing ring in compliance with a specific application. These parameters have statistically been set on the basis of oiii long term experiences. Slewing ring choice To choose a slewing ring the following specifications are required: • Application’s description • Working loads on the Slewing ring • Operating cycle • Slewing torque • Maximum dimensions At first the design of a slewing ring can be made by comparing the applied loads with the load capacity of the bearing raceway....
Open the catalog to page 8The Ap value is determined using the following formula: AP= -^—x(dw-dr)K 4 with dW = diameter of the contact surface under the screw or nut dr = hole diameter The correct performance of slewing rings depends on a well-designed and well-assembled bolting to the connecting structure. The appropriate fastening method expects screws and bolts; any other fastening method (welding) is forbidden. Bolts in the quality classes 10.9 or 8.8, in compliance with regulation ISO 898-1, is recommended, while nuts have to be of an equal or greater quality class with respect to the corresponding screws. To...
Open the catalog to page 9Dynamic load Load case study 1: maximum operating load, including wind FA = P + H +B + G + T = 250 + 100 + 650 + 1800 + 750 = 3550 daN = 35.5 kN FR = Fp - W = 400 - 150 = 250 daN = 2.5 kN MR = (P + H) . a + B . b + W .d - T . c - G . g = (250 + 100) . 10 + 650 . 4.75 + 150.4 - 750 . 0.4 -1800.0.7 = 5627.5 daNm = 56.275 kNm Load case study 2: operating load, including 25% overload, without wind FA = 1.25 . P + H +B + G + T = 1.25 . 250 + 100 + 650 + 1800 + 750 = 3612.5 daN = 36.125 kN FR = Fp = 400 daN = 4 kN MR = (1.25 . P + H) . a + B . b - T . c - G . g = (1.25 . 250 + 100) . 10 + 650 ....
Open the catalog to page 10Notes LEOflFWA brewini DATA REQUEST FORM LEOIIE^A brewini LEOTIE^A brewini
Open the catalog to page 11Slewing rings Features Leonessa Brevini slewing rings are designed to reach the most demanding performance.
Open the catalog to page 12Gears Leonessa Brevini slewing rings can be manufactured with internal or external gear. Our standard gears are with straight teeth, with pressure angle at 20° and with module from 2.5 to 16 mm, in quality class from IT8 to IT 12, according to ISO standards. Heat treatments All Leonessa Brevini slewing rings have heat-treated bearing raceways with an induction hardening treatment. The surface hardness grade is HRC 55-60, with an appropriate treatment depth suitable to the size of the rolling elements. Other types of gears with pressure angles of 25°, 27° or more, helicoidally, chain-shaped,...
Open the catalog to page 13Construction tolerances The steels used in the construction of Leonessa Brevini slewing rings are in accordance with international standards. The most widely used steels are: These types of steel are chosen according to the slewing ring design and its application: • normalized • quenched and tempered The below chart shows the average hardness: Leonessa Brevini slewing rings are manufactured with tolerances and backlashes whose values depend on the slewing ring dimensions and its application. The tolerance values are indicated in the drawings, with an example here below. As regards...
Open the catalog to page 14All Brevini Power Transmission catalogs and technical brochures
-
V series
224 Pages
-
S series
164 Pages
-
E series
272 Pages
-
Slewing drives
112 Pages
-
BGM
18 Pages
-
S6CV
64 Pages
-
MEDIUM PRESSURE MOTORS AND PUMPS
124 Pages
-
series 498
2 Pages
-
series 492
2 Pages
-
series 392/393
2 Pages
-
SH11C
24 Pages
-
H1C
18 Pages
-
E series
274 Pages
-
INDUSTRIAL SERIES
260 Pages
-
Hand pumps
40 Pages
-
Valves and Electronics
274 Pages
-
VPS Mobile Valves
68 Pages
-
MC Tubes kit / Kit tub
38 Pages
-
MC Hydraulic power pack
64 Pages
-
FP Hydraulic power pack
100 Pages
-
MB Orbital geared motors
20 Pages
-
Low speed high torque Orbital Motors
192 Pages
-
Axial piston Pumps and Motors
530 Pages
-
Rotary Drilling
5 Pages
-
Bulk Mining Industrail
11 Pages
-
Deck Crane Brochure
5 Pages
-
Off-highway Product Range
13 Pages
-
Hoisting and Recovery Winches
125 Pages
-
MOBILE SLEWING DRIVES
106 Pages
-
SU IM SERIES
40 Pages
-
ML B RD SERIES
48 Pages
-
MR
4 Pages
-
MP
1 Pages
-
MC
38 Pages
-
MB
20 Pages
-
BFP
4 Pages
-
M series
408 Pages
-
K series
488 Pages
-
V series
224 Pages
-
Hoisting&Recovery Winches
115 Pages
-
WINCH DRIVES
16 Pages
-
INDUSTRIAL PLANETARY GEARBOXES
260 Pages
-
E Series
5 Pages
-
ASu Series
3 Pages
-
ASu66 Series
3 Pages
-
SP MkII Series
2 Pages
-
TAC MkII Series
2 Pages
-
TLu Series
2 Pages
-
TLu66 series
2 Pages
-
VT Series
8 Pages
-
MC4 Series
8 Pages
-
MC2 Series
8 Pages
-
Powerpacks
4 Pages
-
FP Series
80 Pages
-
Take Up Winches for mining
16 Pages
-
S Series Big
20 Pages
-
Marine Technologies
14 Pages
-
Winches overview
16 Pages
-
Sugar mill drives
22 Pages
-
Hydraulic Cylinders
2 Pages
-
OT Silent Plus Pumps
10 Pages
-
OT 300 Group 3 pumps
68 Pages
-
OT 200 Group 2 pumps
127 Pages
-
OT 100 Group 1 pumps
84 Pages
-
S6CV Pumps
68 Pages
-
SH11C Pumps
20 Pages
-
SH5AV Pumps
28 Pages
-
MD10V Pumps
99 Pages
-
BRZ Orbital Motors
10 Pages
-
HT Orbital Motors
19 Pages
-
HR Orbital Motors
27 Pages
-
AR - ARS Orbital Motors
22 Pages
-
BR-BS Orbital Motors
30 Pages
-
BGM Orbital Motors
19 Pages
-
BG-BH Orbital Motors
31 Pages
-
SH7VR Series
49 Pages
-
SH7V Series
74 Pages
-
MD11V Series
13 Pages
-
SH11CR Series
16 Pages
-
SH11C Series
24 Pages
-
Twin Screw Extruder Drives
12 Pages
-
Planetary Bevel Helical Posiplan
125 Pages
-
S-Series Planetary Gearboxes
162 Pages
-
Industrial Planetary Gearboxes
260 Pages
-
Yaw and Pitch Drives
106 Pages
-
Planetary wheel drives
129 Pages
-
Helical & Bevel helical Gearboxes
171 Pages
-
Lifting / Hoisting Gearboxes
37 Pages
-
Long Travel Drives
12 Pages
-
Conveyor Drives
12 Pages
-
Single Screw Extruder Drives
115 Pages
-
Injection Molding Drives
12 Pages
-
Recovery winches
115 Pages
-
Winch drives
108 Pages
-
Atex Gearboxes Catalogue
30 Pages
-
Slewing drives
110 Pages
-
S-Series
160 Pages
-
Catalog
250 Pages
Archived catalogs
-
Medium pressure motors and pumps
124 Pages
-
CATALOGUE E series
274 Pages
-
Leonessa Brevini
57 Pages