NHT Technical Manual 02 General info
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/ General information Nokian Heavy Tyres is passionate in developing high quality solutions for the most extrme conditions found in forests, modem day farming, municipal contracting, transportation terminals and underground applications. In addition to tyre and supplementary item information, this manual focuses on the special necessities and requirements in each product category. The forestry section, for example, has a detailed guide on the right tyre and inflation pressure choice by application. This technical manual will be your tool in finding the right tyre for your work, with a promise on carefree working hours. General information includes: 2.1 Testimonials 2.6 Ground contact pressure comparison 2.2 Tyre markings 2.7 How to use load capacity tables? 2.3 Tyre structures 2.8 Limited warranty 2.4 Inflation pressure 2.5 Accessories 2.5.1 Non-skid chains 2.5.2 Tracks 2.5.3 Tyre pressure drop warning system 2.5.4 Rims 2.5.5 Tubes and valves

Nokian Heavy Tyres Technical manual / General information / Testimonials / Kone-Rauhansuu Ltd in wolves' nest Jari Pinomki, foreman, Kone-Rauhansuu Ltd Tyre Pressure LED pressure watch adds reliability and efficiency to working hours Pulp wood falls down. Forestry machine leaves behind a row of neat stacks. Intermediate felling is under way in Ylne, P뫴yty in southern Finland. Jari Pinomki sits behind the wheel of Valmet 901.4 harvester. The new machine was fitted with wide Nokian Forest King F tyres mounted on a 22.5" rim. This was to make the crane reach even further. - Tyres should not be...

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TYRE CLASSIFICATION CODES Optional marking TRA Code Tread type Agriculture! tractor drive wheel tyres R-1 Regular service (tread) R-1W Wet traction service R-1S Sprayer / spreader service R-2 Cane and rice service (deep tread) R-3 Flotation service (shallow tread) R-4 Industrial service (construction application) Agricultural tractor steering wheel tyres (non-traction pattern) F-1 Single rib tread F-2 Multiple rib tread F-3 Industrial service (construction application) Agricultural implement tyres I-1 Multi-rib tread I-2 Moderate traction service I-3 Traction tread I-4 Plough tail wheel...

UNITS Quantity S.I. units Other units Length m (metre) 1 inch (") = 0.0254 m (or 25.4 mm) 1 mile = 1 609 m (or 1.609 km) Mass kg (kilogram) 1 pound (lb) = 0.4536 kg Pressure Pa (Pascal) 1 bar = 100 kPa 1 pound per square inch (p.s.i. or lb/in2) = 6.895 kPa 1 kg/cm2 = 98.066 kPa Speed m/s 1 km per hour (km/h) = 0.27778 m/s (metre per second) 1 mile per hour (mph) = 0.4470 m/s (or 1.60935 km/h) SPEED SYMBOL The SPEED SYMBOL (SS) indicates the maximum speed at which the tyre can carry a load corresponding to its Load Index. SS km/h mph A1 5 2,5 A2 10 5 A3 15 10 A4 20 12,5 A5 25 15 A6 30 20 A7...

s yre structures RADIAL TYRE The tyre carcass is stabilized by an inextensible circumferential belt. The ply cords are laid substantially at 90° to the centerline of the tread. (OR BIAS PLY) TYR The ply cords are laid at alternate angles substantially less than 90° to the centerline of the tread.

essu CHOSING THE RIGHT INFLATION PRESSURE Maintaining the proper tyre inflation pressure The inflation pressures of tyres should be checked carefully at regular intervais. Perform a visual check daily and repeatedly when operating. A slow leak can cause damage to the tyre sidewall or lead to tube failure before the under-inflation can be felt in the handling of the machine. Repairable damage should be repaired immediately in order to help obtain regular tyre life. When operating machinery in winter conditions, it should be kept in mind that when temperatures decrease, so do tyre inflation...

Nokian Heavy Tyres Technical manual / General information / Accessories / Non-skid chains NON-SKID CHAINS Nowadays, the general tendency is to work increasingly without chains. This is turn places additional demands on forestry tyre selection in order to ensure access to difficult terrain while, at the same time, minimising ground disturbance. In practise, however, there are situations when the use of chains cannot be avoided. In such cases, it is important to pay attention to some basic considerations. Use of chains Before installing new chains, it is recommended that they be inspected for...

Tracks RECOMMENDED INFLATION PRESSURES WHEN USING TRACKS Track manufacturers give their recommendations in slightly diffrent ways. The practice, that is becoming increasingly common, is where track manufacturers specify their products according to the tyre manufacturer, the tread design and the tyre size. The minimum requirement is that the track manufacturer provide the tyre size and the tread design for each track type. When acquiring tracks, it is extremely important for the user to select the correct track type which is suitable for the tyre and that the operating pressure, in...

Nokian Heavy Tyres Technical manual / General information / Accessories / Tire Pressure LED ire Pre TYRE PRESSURE DROP WARNING SYSTEM Tire Pressure LED Easy tyre pressure check available on all Nokian tyres > Easy to use > Reduces tyre maintenance > Reduces tyre break-ups > Saves money How to use > First adjust the tyre pressure to the recommended value. > Screw the Tire Pressure LED tight by hand, using the anti-theft tool provided with the kit. > The Tire Pressure LED is now calibrated and is constantly monitoring the tyre pressure. What to do when LED starts flashing > Unscrew the Tire...

i9 j r ■ RIM MARKINGS Disc wheels and demountable rims shall be marked with the following information: a) Rim size designation Hotice; multi ndicats ,nw'eCe rim-'e'p/e rim. Rim marking Rim contour Nominal diameter code Special features ^ Width Profile code 6%J x 15 H2 or 15 x 6%J H2 6% J 15 Asymmetrical drop-centre, double hump (H2). (if S=symmetrical) 22.5 x 7.50 7.5 22.5 10.00 V -20 or 20 - 10.00 V 10 V 20 DW16L x 26 or 26 x DW 16L 16 L 26 Secondary Well (DW) 8.00TG - 24 SDC or 24 - 8.00TG SDC 8.00 TG 24 Semi-Drop Centre (SDC) 11.25 - 25/2.0 or 25 - 11.25/2.0 11.25 25 Flange Height Code (...