STRAIGHT SPUR GEARS and RACKS

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1 STRAIGHT SPUR GEARS and RACKS SPUR GEARS WITH LATERAL HUB page 4 SPUR GEARS WITHOUT HUB 7 RACKS 9

2 SPUR GEARS AND RACKS SPUR GEARS AND RACKS SPUR GEARS WITHOUT HUB SPUR GEARS WITH LATERAL HUB RACKS

3 STRAIGHT SPUR GEARS AND RACKS Straight gears and racks are the classical components for mechanical transmission of rotary and transverse movements between moving parts of machines. This explains why these components are so widespread and are used to such a large extent in various sectors of general mechanics such that in practice it is impossible to find a rigid type power transfer drive chain which does not adopt these basic components. However, the needs of industry are extremely complex as regards the performance required from the gear and the rack and reflect the typical operating conditions in terms of precision or resistance of final use for which the gear and the rack are designed. This is why proposing a product intended to meet any need expressed by industrial experience would be unthinkable. CHIARAVALLI GROUP SpA has made a basic choice with this aspect in mind, deciding to offer industry a broad range of gears and racks for general use, combined in a standardised series, which is characterised by excellent quality. The gears and racks produced using standardised C4 steel are manufactured adopting modular sizes in accordance with a reference profile that complies with DIN 3972 II and a full head radius. This ensures complete engagement at the base of the tooth with an obvious increase in the bending resistance. The internal specifications that define the geometry of the tooth prescribe a marked K profile for the side surface, with a strict limitation of the profile errors to negative deviations. This has a positive influence on the level of noise of the tootheair, since the engaging impacts to the teeth head are reduced. The systematic use of latest generation CNC gear hobbing machines, special hobs designed for very high cutting speeds and specifically developerocessing technologies, enable a general precision to be assured in compliance with DIN 3962 Standards and a degree of surface finish that is not readily achieved with operations using a hob gear cutting machine. The working tolerance for tooth thickness has been chosen to comply with the cd 2 Coupling Category in accordance with DIN 3967 Standards, which defines the position and the size of the tolerance range and therefore the coupling gap between the gears. A processing tolerance equal to js 8 for the centre distance is recommended in compliance with DIN 3964 Standards for normal operating conditions, which if adopted, enables us to assure a minimum working coupling gap of adequate size, while at the same time limiting the value of the maximum gap. Similar considerations apply in the case of the gear-rack coupling, since the latter is manufactured adopting the same coupling category. Our Technical Department is available and willing to recommend the most appropriate assembly tolerances to Customers who are interested, although we are also able to manufacture gears with coupling gaps that are larger or smaller compared with the standard value to meet specific needs. We are able to manufacture our straight gears as illustrated in the catalogue with a lengthwise crowning of the teeth, at the request of customers. This solution is particularly useful if the user is unable to ensure a perfect alignment between the axes. THE RANGE OF MACHINES USED, COMPRISING ALMOST ENTIRELY OF VERY MODERN MACHINES THAT HAVE CUTTING EDGE FEATURES AND DESIGN ENABLES OUR COMPANY TO PRODUCE GEARS BASED ON A DRAWING IN QUALITATIVE AT A VERY COMPETITIVE PRICE. Our Technical Department is available to carry out a preliminary examination of any processing problems experienced by Customers and to prepare cost estimates.

4 4 STRAIGHT SPUR GEARS AND RACKS STRAIGHT SPUR GEARS AND RACKS WITH LATERAL HUB Pressure angle: 2 MATERIAL C 4 UNI 784 Z MODULE , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,8 dm D1 B A dp de MODULE 1, WIDTH BAND B for: Module 1 = 1 mm Module 1. = 17 mm Module 2 = 2 mm , 18, 14 8, , 19, 14 8, , 21, 17 8, , 22, 18 8, , 24, 2 8, , 2, 2 8, , 27, 2 8, , 28, 2 8, , 3, 2 8, , 31, 2 1, , 33, 2 1, , 34, 2 1, , 36, 2 1, , 37, 2 1, , 39, 3 12, , 4, 3 12, , 42, 3 12, , 43, 3 12, , 4, 3 12, , 46, 3 12, , 48, 3 12, , 49, 3 12, , 1, 3 12, , 2, 3 12, , 4, 3 12, ,, 4 12, , 7, 4 12, , 8, 4 12, , 6, 4 12, , 61, 14, , 63, 14, , 64, 14, , 66, 14, , 67, 14, , 69, 14, , 7, 14, , 72, 14, , 73, 14, , 7, 14, , 76, 6 1, , 78, 6 1, , 79, 6 1, , 81, 6 1, , 82, 6 1, , 84, 6 1, , 8, 6 1 1, , 87, 6 1 1, , 88, 6 1 1, , 9, 6 1 1, , 91, 7 2 1, , 93, 7 2 1, , 94, 7 2 1, , 96, 7 2 1, , 97, 7 2 1, , 99, 7 2 1, , 1, 7 2 1, , 12, 7 2 1, , 13, 7 2 1, , 1, 7 2 1, Quantity, availability anrices TOTAL WIDTH A for: Module 1 = 2 mm Module 1. = 3 mm Module 2 = 3 mm MODULE , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,94

5 STRAIGHT SPUR GEARS AND RACKS WITH LATERAL HUB Pressure angle: 2 Z MODULE 2, , 3, 22 1, , 32, 2 1, , 3, 28 1, , 37, 3 1, , 4, 32 12, , 42, 3 12, , 4, 3 12, , 47, 3 12,4 3122,, 4 14, , 2, 4 14, ,, 4 14, , 7, 4 14, , 6, 4 14, , 62, 14, , 6, 14, , 67, 14, , 7, 14 1, , 72, 14 1, , 7, 16 1, , 77, 16 1, , 8, 16 1, , 82, 16 1, , 8, 16 1, , 87, , , 9, , , 92, , , 9, , , 97, , , 1, 7 2 2, , 12, 7 2 2, , 1, 7 2 2, , 17, 7 2 2, , 11, 7 2 2, , 112, 7 2 2, , 11, 7 2 2, , 117, 8 2 2, , 12, 8 2 2, , 122, 8 2 2, , 12, 8 2 3, , 127, 9 2 3, , 13, 9 2 3, , 132, 9 2 3, , 13, 9 2 3, , 137, 9 2 3, , 14, 1 2 4, , 142, 1 2 4, , 14, 1 2 4, , 147, 1 2 4, , 1, 1 2 4,7 dm D1 B A dp de WIDTH BAND B for: Module 2. = 2 mm Module 3 Module 4 MODULE , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,92 = 3 mm = 4 mm TOTAL WIDTH A for: Module 2. = 4 mm Module 3 Module 4 = mm = 6 mm MODULE , , , , , , , , , , , , , , , , , , , , , , , , ,63 STRAIGHT SPUR GEARS AND RACKS MATERIAL C 4 UNI 784 Quantity, availability anrices

6 6 STRAIGHT SPUR GEARS AND RACKS STRAIGHT SPUR GEARS AND RACKS WITH LATERAL HUB Pressure angle: 2 Z MODULE , , , , , , , , , , , , , , , , , , ,44 dm D1 B A dp de WIDTH BAND B for: Module Module 6 Module 8 MODULE , , , , , , , ,33 = mm = 6 mm = 8 mm TOTAL WIDTH A for: Module Module 6 Module 8 MODULE 8 = 7 mm = 8 mm = 11 mm , , , , , , ,4 MATERIAL C 4 UNI 784 Quantity, availability anrices

7 STRAIGHT SPUR GEARS AND RACKS 7 WITHOUT HUB LATERAL Pressure angle: 2 Z MODULE , , , , , , , , , , , ,47 B D1 dp de WIDTH BAND B for: Module 1 = 1 mm Module 1. = 17 mm Module 2 = 2 mm Module 2. = 2 mm MODULE 1. MODULE 2 MODUE , , 112, 2 1, , , , 127, 2 1, , , 142, 2 2, , , , , , 19, 2 3, , , , , , , , , , , , , , 162, 2 3, , , , 187, 2, , , , 212, 2 6, , , 237, 2 8, , , , , , 317, 2 1,4 STRAIGHT SPUR GEARS AND RACKS MATERIAL C 4 UNI 784 Quantity, availability anrices

8 8 STRAIGHT SPUR GEARS AND RACKS STRAIGHT SPUR GEARS AND RACKS WITHOUT HUB LATERAL Pressure angle: 2 Z MODULE , , , , , , , , , , , , , , , , , , ,61 B D1 dp de WIDTH BAND B for: Module 3 Module 4 Module Module 6 = 3 mm = 4 mm = mm = 6 mm MODULE 4 MODULE MODULE , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,7 MATERIAL C 4 UNI 784 Quantity, availability anrices

9 RACKS INSTRUCTIONS FOR CONTINUOUS MOUNTING 9 Tolerance on the pitch: = fpt from M=1 up to M=3 = ±,28 from M=4 up to M=1 = ±,4 Tolerance on the sum of the wheelbases on 1 mm = ±,8 Quality class 9 as per norm DIN 3962/63/67 Pressure angle 2 M B h11 H h12 dr ho M M - ho L= real lenght of the rack x continuous mounting ,71 1,71 2,1 ±,3 11,6 ±,3 2,4 ±,3 2999,3 -,11 -,18 1, , 18,9-2,9 3,6 ±,3 13,1 ±,3 22, ±,3 3,8 -,11 -, ,43 3,43 2,1 ±,3 14,6 ±,3 23,6 ±,3 32,4 -,13 -,21 2, , 26,81-4,31 2,1 ±,3 14,6 ±,3 21,8 ±,3 2999,1 -,13 -, ,2 -,2 8,3 ±,3 17,7 ±,3 26,4 ±,3 3,4 -,13 -, ,92-6,92 2,1 ±,3 14,6 ±,3 29,7 ±,3 32,3 -,13 -, ,92-6,92 2,1 ±,3 14,6 ±,3 29,7 ±,3 32,3 -,16 -, ,66-8,66 2,1 ±,3 14,6 ±,3 29,7 ±,3 2999,1 -,16 -, ,6-1,6 8,3 ±,3 117, ±,3 216, ±,3 314,8 -,19 -, ,2-1, ,3 ±,3 - -,19 -, ,74 13, ,7 ±,3 - -,19 -,3 H h12 -,3 -,3 -,3 -,4 -,4 -,4 -,4 -,4 -,4 -,4 -,4 B h11 _ L dr _ ho M //,2 -, Master rack mounting coupling dr = ø diameter control plug ±,3 ±,3 ±,3 ±,3 ±,3 ±,3 ±,3 ±,3 ±,3 RACKS INSTRUCTIONS FOR CONTINUOUS MOUNTING MATERIAL C 4 NORMALIZE Quantity, availability anrices

10 1 RACKS RACKS Pressure angle: 2 All the racks provided by Chiaravalli Group SpA are realized for continuous mounting. h ho b L DIMENSIONS b x h M PART NUMBER b h ho L , , , ,8 1, , 1, , , , , , , ,2 2, , 2, , , , , , , , , , , , , , , , , , , , , , , , ,9 MATERIAL C 4 NORMALIZE Quantity, availability anrices

11 RIGHT-ANGLE CHQ The right-angle gear drives of the CHQ series were designed for industrial applications, where it is necessary to transmit rotary power motion between axes arrangeerpendicularly. Eight different sizes, five gear ratios (or speed multipliers) 1:1-1:1. - 1:2-1:3-1:4, shafts with diameters ranging from 11 to 8 mm, through hollow shafts with diameters from 12 to 8 mm with splines from 4 to 22 mm, or hollow shafts with UNI 893 NT grooverofile from 6x11x14 to 1x72x82. Also available are hollow shafts set-up for driving with locking set, and flanges with hollow shaft and spline seat for electric motor coupling in B and B14 versions, size from 86 to 16. Powers up to 1,74 kw, torques up to 9,16 Nm, rotation speed up to 3, rpm and even faster.

12 SPECIAL COMPONENTS MANUFACTURING We produce high precision Gears and Special Mechanical Components. A large and varied range of modern CNC machine tools assures large capacity production at high quality level. operate using the most modern CAE and CAD-CAM technologies. The production is certified and assured using three-dimensional high precision measuring machines. Chiaravalli Group SpA co-workers, highly skilful and motivated by a great spirit of belonging to the company, Chiaravalli Group SpA your technological partner for high quality production.

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