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1 GENERAL Tapped Holes and Threads Threads Keyways Shafts Shaft Power Tolerances General Capacity HPC Capacity Backlash Gear Tooth Sizes Materials Available Material Strengths Material Hardness Values Materials Delrin International Material Equivalents Prime Number Factor Table General Unit Conversions BELTS Timing Belt Formulae, Terms & Definitions & 27. Timing Belt Calculations Belt Selection Graph Tooth Shear Strength HTD Symbol Descriptions Design Calculations Belt Selection Graph Drive Design Additional Factors Calculation Formulae Calculation Tensioning/Min Adjustment x/y Rated Power Minimum Timing Belt Pulley & Roller Diameters Belt Length Tolerances GEARING Spur Gears / Helical Gears Formulas & Load Calculations Speed Factors Zone Factors Strength Factors Bevel Gears Formulas Load Calculations Speed Factors Zone Factors Strength Factors Worms & Wheels Formulas Load Calculations Speed Factors Bending and Surface Stress Factors Efficiency of Worms CHAINS Chains General Information Chain Selection Process (16) Chain Selection Rating Graph Chain Connecting Links Simplex, Duplex and Triplex Materials Hostaform Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263 TECHNICAL INDEX For free technical support call +44 () or All figures given are as a guide only and no responsibility is taken by HPC Gears Ltd for the use thereof. For confirmation of any values please refer to British Standards

2 TAPPED HOLES & THREADS METRIC IMPERIAL BORE or SHAFT Ø OVER UPTO TAPPING DRILL Ø (mm) KEYWAY K2 K3 K4 K5 K6 K8 K1 K K K16 THREAD M2 M2.5 M3 M4 M5 M6 M7 M8 M1 M M M16 M M2 M22 M24 PIN HOLE Ø METRIC THREAD PITCH (mm) GRUB SCREW M3 M3 M3 M4 M5 M6 M8 M1 M1 M M OUTSIDE Ø (mm) BORE or SHAFT Ø (inches) PIN HOLE Ø (inches) Tapping Drill Size GRUB SCREW OVER UP TO M M M M M M M M Diameter of Shaft Key size Over Up to and including W x T 1/4 1/2 1/8 x 1/8 1/2 3/4 3/16 x 3/16 3/4 1 1/4 x 1/ /4 5/16 x 5/16 1 1/4 1 1/2 3/8 x 3/8 1 1/2 1 3/4 7/16 x 7/16 1 3/4 2 1/2 x 1/ /2 5/8 x 5/8 2 1/2 3 3/4 x 3/4 Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()

3 THREADS IMPERIAL THREAD Ø Hole for Tapping Pitch mm (TPI) ØD mm THREAD Ø Hole for Tapping Pitch mm (TPI) ØD mm UNF UNF 356 UNF 448 UNF 64 UNF 836 UNF 132 UNF UNF 1/4 UNF 5/1624 UNF 3/824 UNF 7/162 UNF 1/22 UNF 9/16 UNF 5/8 UNF 3/416 UNF 7/8 UNF 1 UNF UNC UNC 348 UNC 44 UNC 632 UNC 832 UNC 4 UNC 24 UNC 1/42 UNC 5/16 UNC 3/816 UNC 7/16 UNC 1/213 UNC 9/16 UNC 5/8 UNC 3/41 UNC 7/89 UNC UNC BA 47.5 BA 1BA 2BA 3BA 4BA 5BA 6BA 7BA 8BA BSP 55 1/8 BSP 1/4 BSP 3/8 BSP 1/2 BSP 5/8 BSP 3/4 BSP 7/8 BSP 1 BSP 1 1/4 BSP 1 1/2 BSP 1 3/4 BSP 2 BSP BSF 55 3/16 BSF 1/4 BSF 5/16 BSF 3/8 BSF 7/16 BSF 1/2 BSF 9/16 BSF 5/8 BSF 3/4 BSF 7/8 BSF 1 BSF BSW 55 1/8 BSW 3/16 BSW 1/4 BSW 5/16 BSW 3/8 BSW 7/16 BSW 1/2 BSW 9/16 BSW 5/8 BSW 3/4 BSW 7/8 BSW 1 BSW Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()

4 KEYWAYS METRIC IMPERIAL REF w mm h mm P mm REF w inches h inches P inches K2 K3 K4 K5 K6 K8 K1 K K K K3/32 K1/8 K5/32 K3/16 K1/4 K5/16 K3/8 K1/ HOLE KEY K2K8 w h. +.5mm ( +.2" ) +.15mm ( +.5" ) K1 K16 width. +.1 height SHAFT KEY P ±.5mm approx Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263

SHAFTS BORE or SHAFT DIAMETER over up to Ø4 Ø6

Ø44 Ø44 Ø5 Ø5 Ø58 KEYWAY K2 K3 K4 K5 K6 K8 K1 K

1. 1. 1. SET SCREW SIZE M3 M3 M3 M4 M5 M6 M8 M1

KEY OILITE BEARING BUSH TAPER DOWEL Circlip

GEAR CLAMP INTEGRAL GEARCLAMP WOODRUFKEY & LOCK

5 SHAFTS BORE or SHAFT DIAMETER over up to Ø4 Ø6 Ø6 Ø8 Ø8 Ø1 Ø1 Ø Ø Ø17 Ø17 Ø22 Ø22 Ø3 Ø3 Ø38 Ø38 Ø44 Ø44 Ø5 Ø5 Ø58 KEYWAY K2 K3 K4 K5 K6 K8 K1 K K K16 FIXATIONS SECURING OF GEARS TO SHAFTS PIN HOLE DIAMETER SET SCREW SIZE M3 M3 M3 M4 M5 M6 M8 M1 M1 M M SAMPLES OF ALTERNATIVE FIXINGS SET SCREW KEY OILITE BEARING BUSH TAPER DOWEL Circlip Shaft Clamps GEAR & PINION DOWELLED or PINNED GEAR CLAMP INTEGRAL GEARCLAMP WOODRUFKEY & LOCK NUT FIXING Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()

6 SHAFT POWER SHAFT DIAMETERS MATERIAL N.m. MILD STEEL EN1A EN3 35 N/m 2 1,5 6,6,5 23 SHAFT DIAMETER (mm) APPROX TORQUE TRANSMITTED N/M Ø6 Ø1 Ø Ø15 Ø17 Ø2 Ø25 Ø3 Ø4 Ø5 Ø75 Ø N.m. EN8 EN32 EN58 45 N/m 2 1,9 8, N.m. EN16 EN19 EN24 EN36 6 N/m 2 2,5, SHAFT ROTATION Nm RPM ,1 1,15 15,22 2,29 3,44 4,6 5,72 8, 1, SHAFT ROTATION H.P. TRANSMITTED FOR GIVEN R.P.M. AND Nm,1, ,,21,,35,51,7,1,16,24,27,35,55,7,,,42,55,7,1,,21,,42,56,7 1,1 1,4,,,55,82,,,21,,4,55,82 1,1 1,4 2,3 2,8,,38,7,,21,,35,52,7 1, 1,4 2,1 2,8 3,5 5,5 7,,,23,55,5,23,35,45,56,85 1,15 1,7 2,3 3,5 4,5 5,6 9,2,5,,,7,,,41,55,7 1,5 1,4 2,1 2,8 4,2 5,5 7,1,2,4,1,21,42,62,85 1,5 1,6 2,1 3,1 4,1 6,2 8,5 1, ,,,56,,,57,85 1,1 1,4 2,1 2,8 4,2 5,5 8, ,17,38,7,17,35,7 1,5 1,4 1,75 2,7 3,5 5, ,2,41,85,21,41,85 1,25 1,7 2,1 3,1 4,2 6,2 8,4, KW = HP x,746,35,7,,35,7 1,5 2,1 2,8 3,5 5,2 7, 1, ,7,15,,7 1,45 2,9 4,2 5,6 7, 1, ,15,,55 1,4 2,8 5,6 8, ,35,7 1,4 3, ,7 1,4 2, Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263

7 TOLERANCES Gear tooth shape is an involute curve. Module BS4582 Pt 1 Fig 1 DIN867. DP BS978 Pt 1 Fig 1 DIN 867. TCE = Total Composite Error mm BORE TOLERANCES Ø RANGE H7 over upto low high BLANKS mm inches GENERAL ±.15 ±.6 BORES TO H8 LIMITS H8 LIMITS GEAR ØD (nominal).15.6 GEAR mm inches PCD (nominal).15.6 BACKLH (nominal)..43 TCE (6Ø).4.15 (TCE DELRIN).5.2 TCE (65Ø).6.23 (TCE DELRIN).7. TCE (5+Ø).7.32 RACKS mm inches TCE (3mm length) ±.1 ±.4 For Pitch line Tolerances See Page 27.9 Note: Straightness of Derlin Racks: Due to the nature of plastic materials after cutting teeth some unpredictable distortion may occur. Solid mounting is required. BORE AND SHAFT TOLERANCES SHAFT TOLERANCES CLEARANCE FIT TRANSITION FIT INTERFERENCE FIT H8 f7 g6 k6 n6 p6 s6 low high low high low high low high low high low high low high Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()

8 GENERAL CAPACITY SIZE LIMITATIONS Most of the cutting limitations are dependent on the required pitch. GEARS SPUR GEARS HELICAL GEARS SPROCKETS INTERNAL GEARS WORM WHEELS WORMS RACKS GEAR TYPE BEVELS TIMING PULLEYS PINION GEARS BORING CUT OFF DRILLING MILLING SLOTTING TURNING TYPE GRINDING 1 DP.2 25 MOD 1/4", 3/8", 1/2", 5/8", 3/4", 1", 1 1/4" CP 4,6,8 mm pitch 96 DP DP 1 7 mm pitch.2 2 MOD.2 4 MOD 1 7 mm pitch 96 6 DP.5 7 mm pitch.2 4 MOD 1 6DP 96 4 DP (Up to 25 MOD.25 8 MOD on specials) 64 6 DP.4 6 MOD 5 2mm AT MXL 2.5 2mm T XL 3 mm HTD L H 2mm 13mm COMPONENTS RANGE SEMBLY Jig boring.8mm of size at 25mm dia Horizontal boring light Vertical boring CNC Coordinate milling and boring Up to 1524mm (6") stroke CNC Precision turning and boring Precision diameter grinding Bore honeing Ø5 Ø (.2" 72") Ø5 Ø1 (.2" 4") Ø Ø4 (.55" 16") Up to Ø2 internal (8") Max component Ø298 (") Ø15 Ø25 (.6" 1") From Ø1 x 1 long up to Ø6 x 5 long depending on cutter and pitch Up to 3 long (") in one piece Up to Ø (4.72") Ø1 Ø5 (.4" 2") Ø5 Ø6 (.2" 24") Max. area of 61 x 155 (24" x 6") Up to Ø15 Up to Ø4 CAPACITY (mm) GEARBOX (mm) Max. area of 61 x 155 (24" x 6") Max. Ø6 x 1 long Ø1 Ø2 x 5 between centres Ø3 Ø25 Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263

9 HPC CAPACITY & BACKLH STANDARD PITCHES Other pitches available on request. BEVELS SPROCKET PULLEYS (PITCH) Pitch Line Tolerances for RACKS..8 6 mod 48 5 DP 1/4": 3/8": 1/2": 5/8": 3/4":1": 1 1/4" 4mm : 6mm : 8mm.8" :.2" :.375 :.5 T2.5 : T5 : T1 : T2 HTD3 : HTD5 : HTD8 : HTD AT5 : AT1 : AT2 GEARS EXTRA FINE PITCH BACKLH (mm) APPROX. BACKLH STD CENTRES WORMS & WHEELS RACKS Standard Special METRIC Module (mm) CP.25 Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44() mod 64 6 DP.25 8 mod 96 4 DP PRESSURE ANGLES 1mm 2 P.A. 1/2 P.A. BACKLH CORRESPONDING TO PITCH FINE PITCH MEDIUM PITCH HEAVY PITCH APPROX. BACKLH STD CNTRS APPROX. BACKLH STD CNTRS APPROX. BACKLH STD CNTRS mm IMPERIAL DP (Inches) CP /2 1/1 1/8 1/

10 GEAR TOOTH SIZES Addendum Dedendum Whole depth Tooth thickness CP Circular Pitch ØD PCD Bold numbers are standard. Dimensions in mm and inches. CIRCULAR MOD DP PITCH.2 MOD.25 MOD MOD MOD.5 MOD MOD MOD MOD MOD MOD MOD MOD MOD MOD MOD MOD 2.5 MOD MOD 3 MOD MOD MOD MOD MOD DP 96 DP DP 72 DP 64 DP DP DP DP DP DP.22 DP DP 22 DP DP DP DP 15 DP.51 DP.7 DP DP DP DP DP DP DP ".327" ".436".49" " " " " " " ".27" ".1745" ".294" " " " " " " TOOTH THICKNESS ".163" ".2".245" " " " " " " ".7135" ".8725" " " " " " " " ".566 ADDENDUM (= MODULE) DEDENDUM ".14".3.5".138".156".4.5.".6.25".7.277".75.3".8.333".9.357" ".454" ".555" ".666" " " " " " 5..2" 6..25" ".5" ".194".27" ".84.35" " " " " ".636" ".694" ".833" " " " " 5..33" " " 1. WHOLE DEPTH ".25".72.3".333".375" " " " " " " 2.4.1".19" ".5" ".15" " " " " ".25.45" ". Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263

11 MATERIALS AVAILABLE The materials below are supplied as standard. HPC Gears Ltd reserve the right to use higher grades of material. STANDARD MATERIALS PRODUCT GEARS WORM WHEELS WORMS SPROCKETS PULLEYS BEVELS RACKS OTHER MATERIALS EN8 EN19 EN24 EN22 EN32B EN36 EN4B EN41 PHOSPHOR BRONZE PB2 BS 1985 DIN175 CUSN AFNOR UE COPPER C HDHC BS74 ALUMINIUM BRONZE DTD 197A BS74 DIN CuAI1Ni ISO 4 CuAI1Fe5Ni5 BRS CZ1 BS74 CuZN39Pb3 DIN1766 CuZn4Pb3 NFA 5115 PLTIC DELRIN (Acetal 15) NYLON 66 DIN16979 DIN16985 ALUMINIUM 2T3 BS43/5 DIN AICuBiPb French Former NF AU5PbBi HE15TF BS74 DIN AICuSiMn French Former NF AU4 SG HE3TF BS74 DIN ALMgSiL French Former NF AS G M.7 TUFNOL WHALE BS2572 Type 2 CARP BS2572 Type F1 EN22, EN32A, EN24, EN36, EN58, DELRIN PHOSPHOR BRONZE, DELRIN EN22, DELRIN EN32B or EN 22, DELRIN, EN58 2T3 ALUMINIUM, EN32, EN22 EN8, DELRIN EN8, EN32A, EN58, DELRIN BRITISH GERMAN FRENCH DIN7735 HGW2 DIN7735 HGW3 STANDARD MATERIALS (EN8) INDUCTION/FLAME HARDENED ONLY CAN BE THROUGH/INDUCTION/NITRIDE HARDENED 555 ROCKWELL C OR FLAME HARDENED CAN BE SKIN HARDENED OR CE (CYANIDE) HARDENED CAN BE NITRIDE HARDENED Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()

12 MATERIAL STRENGTHS Note: 1N/mm 2 = 1 MPa Material Nylon 66 Delrin (Polyacetal) Tufnol Cast Iron Brass Aluminium Alloy Aluminium Bronze Phosphor Bronze (EN32A) 45M1 (EN32A) 45M1 (EN8) 8M4 (EN8) 8M4 (EN24) 817M4 (EN24) 817M4 (EN36) 655M13 (EN58AM) 33S21 Material NYLON 66 DELRIN TUFNOL WHALE ROCKWELL C SCALE 15kg ROCKWELL B SCALE 1 BALL 1kg Condition WHALE GR17 (26) HE15 AB2 PB2 Sand Cast Case Hardened Induction Induction/through Case Hardened FIRTH VICKERS kg Max. Service Temperature Melt Point Long Term Short Term 255 C 175 C BRINELL 1mm Ø 3kg Tensile Strength lbf/in TONS PER INS Surface Stress Sc 5* 5* 56 7* Bending Stress S b 39 39* * C 9 C C Tensile Strength N/mm MATERIAL HARDNESS VALUES EN1,3B EN32 EN8 Not heat treated * Estimated values Elongation After Fracture % 2% 2% 6% 6% 8% % 4% 6.25% % 16% 17% 5% 13% 35% 4% 17 C 15 C 13 C MATERIAL AND CONDITION thru hdn values dependent on limiting ruling sections EN9, 16 EN24, 36 ROLLED EN16T, 19T, 24T EN56, 58 EN19, 33 EN36T, 24T EN8R, 34 EN57 EN24, 25, 26, 3 EN8 IND HDN EN16 THR HD EN19 THR HD EN24 IND HDN EN4B, 41 GEOUS NITRIDE EN36 CE/HD EN32C/H, 33C/H EN34C/H EN56, 58 PLMA NITRIDE 2% Proof Stress N/mm EN351, 4 EN26 THR HD EN31 THR HD Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263

13 MATERIALS DELRIN POLYACETAL 15 MECHANICAL PROPERTIES TM TEST METHOD VALUES Density D g/cm 2 Tensile yield D6 55 C N/mm 2 4 C N/mm 2 C 69 N/mm 2 7 C 48 N/mm 2 1 C 36 N/mm 2 2 C 26 N/mm 2 Flexural fatigue endurance limit D N/mm 2 Compressive stress D695 1% deformation 36 N/mm 2 1% deformation 4 N/mm 2 Hardness, Rockell D785 M94 R Water absorption D57 24 hours immersion.25 % equilibrium 5% R.H..22 % equilibrium, continuous immersion.9 % MECHANICAL PROPERTIES TM TEST METHOD VALUES Coefficient of dynamic friction against Steel D94 no lubricant 61T.1.3 water lubricated.1.2 oil lubricated.5.1 against Brass.15 against Aluminium.15 against Polyacetal.35 break D C.38 % THERMAL PROPERTIES 4 C % Melting point D C C 75 % Deflection temperature under flexural load D648 7 C 23 % 1 C >26 % 1.8 N/mm C 2 C >26 %.5 N/mm C Thermal conductivity.37 W/mK Tensile E Modulus D N/mm 2 Specific heat 1.47 kj/kgk Coefficient of linear thermal expansion D696 Shear Strength D N/mm 2 4 C 3 C 1.4 x1 5 m/(m.k) Flexural Modulus D79 3 C 6 C.2 x1 5 m/(m.k) 55 C 365 N/mm 2 6 C 15 C 13.7 x1 5 m/(m.k) 4 C 262 N/mm 2 15 C 15 C.9 x1 5 m/(m.k) 23 C 155 N/mm 2 7 C 895 N/mm 2 Flammability UL 94 HB 1 C 62 N/mm 2 Maximum continuous use temperature in air 9 C in water 65 C Maximum intermittent use temperature in air 15 C in water 8 C Izod impact strength unnotched D256 no break J/m Minimum continuous use temperature 4 C notched 4 C 96 J/m ELECTRICAL PROPERTIES 23 C 3 J/m Volume resistivity D ohm cm Surface resistivity D ohm Tensile impact strength D22 35 kj/m 2 Dielectric strength short time D9 2 kv/mm (2.3mm sheet) Deformation under load D621 (N/mm 5 C).5 % Dielectric constant HZ 16HZ D Dissipation factor (1mm sheet) D15 1HZ 1kHZ 1kHZ 1MHZ.5 Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()

14 INTERNATIONAL MATERIAL EQUIVALENTS Carbon Steels. CCMFS Carbon and Carbon Manganese free cutting steels. Alloy steels. SHRS Stainless and heat resistant steels. 1A 32C 3B 5C A & B 8C 8M 9 En. No. B 19 19B B A 32M 36 39B 4B 43A 56AM 58M 27. B.S. 97 : M7 8M15 7M2 8A32 7M26 8M3 8M4 8A35/37 8A4 2M36 8M46 7M55 53A32 78M4 78A37 817M4 826M4 835M3 535A99 2M15 45M1 21M15 655M13 835M15 722M24 8M5 416S21 33S31 316S33 KURZ WERK STOFF AFNOR (France) XC XC25 XC38 5C3 6C4 55C35 XC42H1 35MF6 XC48 XC38 32C4 42CD4 35CD4 35NCD6 35NCD 35NCD16 1C6 34C1 NC15 16NCD17 3CD XC48H1 ZCF13 Z1CNF.9 Z6CND17. DIN 9 S 2 C 15 C 22 Cm 35 Ck 3 Ck 4 Cm 35 Ck 4 35 S 2 Ck 45 C Cr 4 42 CrMo 4 34 CrMo 4 4 CrNiMo 6 4 NiMoCr NiCrMo Cr 6 C 1 15 S 2 NiCr 15 NiCrMo CrMo X CrS 13 (Germany) NAME X 1 CrNiS 9 X 5 CrNiMo USA AISI/SAE / STEELS TYPE CCMFS Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263 CCMFS CCMFS CCMFS SHRS SHRS SHRS

15 PRIME NUMBER & FACTOR TABLE From the table to find the lowest prime factor for 645, look along the top row for 6. Then look down the first column to find 45. Find where this column and line meet and this is the lowest prime factor, e.g. in this example for 645, 3 is the lowest prime factor. If a P appears in the square then the chosen figure is a prime number, e.g From to P P 3 7 P 3 P P P P P P 5 P P P 3 P 3 P 7 3 P P 3 P P 3 P P 3 P P P 3 P P P P 3 13 P P 3 P 7 3 P 23 3 P P 3 7 P 3 P P 19 P 7 5 P 3 P P 3 P P P P 3 7 P 3 P P 3 P 17 3 P 7 3 P 13 3 P P P P P P 3 P P P 3 P 31 P P 3 P P 3 P P P 3 P 13 3 P 7 3 P P P 3 P P P P 3 P 7 3 P P 3 P P 3 P 3 P P 3 29 P P 3 7 P 3 P P P 3 13 P 3 P P 3 7 P P 3 P P P P P P 23 3 P P 53 P 3 P 3 7 P 3 P P 3 P P P 3 P P 3 P P P 3 7 P 3 13 P 3 P P P 3 P P 3 31 P P P 3 P P 3 7 P 3 P P P P 3 P P P P 3 7 P 3 P 3 P 7 71 P 3 P 7 3 P 3 13 P 3 P 73 P P 3 P 3 P P P 13 3 P P 3 P P 3 79 P P 3 P P P P P 3 23 P 83 P 3 P P 3 P 3 P P P P 3 P P 3 P P 89 P 3 17 P P 3 17 P 3 P 7 3 P P P P 3 17 P P P P P 3 P P 3 P P P 13 3 P P Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()

16 GENERAL UNIT CONVERSIONS INTERNATIONAL to BRITISH units BRITISH to INTERNATIONAL units Length 1 km = mile 1 m = yd 1 dm =.3 84 ft 1 cm = in 1 µm = µin Area 1 km 2 = acres 1 m 2 = yd 2 1 cm 2 =.155 in 2 Volume 1 m 3 = yd 3 1 dm 3 = ft 3 1 cm 3 = in 3 1 l (litre) =.22 gals. Velocity 1 km/h = mile/h 1 m/s = ft/s Acceleration 1 ms 2 = ft/s 2 Mass 1 kg = lb 1 g = oz = gr (grain) Density 1 kgm3 =.62 4 lb/ft3 1 gcm3 = lb/ft3 Force IN = lbf ft = pdl Torque I N m = lbf ft = lbf ins Length 1 mile = km 1 furlong = km 1 chain = 2.68 m 1 yd =.9 4 m 1 ft = in = 2.54 cm = 25.4mm 1 milliinch ( thou ) = 25.4µ Area 1 Yd 2(square yard) = m 2 a ft 2 (square foot) = m 2 1 in 2 (square inch) = cm 2 Volume 1 yd 3 (cubic yard) = m 3 1 ft 3 (cubic foot) = dm 3 1 in 3 (cubic inch) = cm 3 Capacity 1 gal = dm 3 1 qt (quart) = dm 3 1 pt (pint) = dm 3 1 gill =.2 65 dm 3 1 fl oz = cm 3 Moment of section (second moment of area) 1 ft4 = dm4 1 in4 = cm4 Velocity 1 mile/h (m.p.h.) = km/h 1 ft/s =.34 8 m/s 1 ft/min =.34 8 m/min Acceleration 1 ft/s2 =.34 8 m/s 2 (foot per second per second) Mass 1 ton = 6.47 kg 1 stone = kg 1 lb = kg 1 oz = g 1 slug = g Mass per unit length 1 lb/ft = kg/m 1 lb/in = kg/m 1 oz/in = g/cm Density 1 ton/yd 3 = kg/m 3 ( t/m 3 ) 1 lb/ft 3 = kg/m 3 1 lb/in 3 = g/cm 3 1 lb/gal = kg/dm 3 = kg/l 1 slug/ft3 = kg/m 3 Moments of Inertia 1 lb ft 2 =.42 1 kg m 2 1 lb in 2 = kg cm 2 1 oz in 2 =.2 9 kg cm 2 1 slug ft 2 = kg m 2 Force 1 tonf = N 1 lbf = N 1 ozf =.278 N Unit, Foxwood Ind. Park, Foxwood Rd. Chesterfield, Derbyshire S41 9RN Telephone+44() Fax +44()46263

ROLLER LUBRICANT VISCOSITY RATING

ROLLER LUBRICANT VISCOSITY RATING CHAIN INFORMATION OUTER PLATE OUTER PLATE PIN 2 PIECES OF EACH MAKE AN OUTER LINK BUSH INNER PLATE INNER PLATE 2 PIECES OF EACH MAKE AN INNER LINK ROLLER AMERICAN BRITISH Lubrication (Dependent on power