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QUALITY

INSTRUCTIONS FOR JOINTING HIGRIP LEATHER/FABRIC SERIES
Preparation
1 .Using the tables, mark out length of joint C and of leather and Nylon portions of joints A and B on both sides of both ends of joint.
2. Using a sharp knife, cut through leather surface at point X and remove leather between X and front of joint. Great care must be taken not to cut through nylon core.
3. Grind the joint to a wedge shape with correct dimensions of A, B & C. Grinding machine should be fitted with abrasive paper grade 40 and run at approximately 270 Mtr./min. A block of hard wood 10 cm. x 5cm x 2cm approximately is used to stroke and apply light pressure in case of open type grinders.
CEMENTING (HOT RRESS METHOD)
1. Pre-heat press to 80°c. 2. Roughen leather parts of joint with glass paper. 3. Apply two liberal coats of solution No.4 to leather portions of joint, allowing it to dry after each coat. (Belts supplied in spliced for m for making endless on site will always have coating of solution No.4 applied therein) 4. When second coat of solution No.4 is completely dry, apply a thin coat of solution No.5 to whole (leather & nylon surfaces of both splices) area of joint and allow it to dry until slightly tacky. 5. Place joint correctly in thermostatically controlled pre-heated press and leave under pressure and heat for minimum of thirty minutes. leave the joint in the press with the heat turned off for a further period of at least thirty minutes. 6. Remove from press and allow it to cool thoroughly without any stressing in any way. The edges of the belt and 'lips' of the joint are cleaned and finished with rough emery cloth. leather Nylon Fabric types are cemented in exactly the same way but in addition the 'lip'. of the splice on the fabric top is sealed by cementing a 25mm wide woven fabric using a light film of HIGRIP solution No.5.
CEMENTING (COLD PRESS METHOD)
1. Roughen leather parts and apply solution No.4 as in hot press method 2 and 3 above. 2. Apply a thin coat of solution No.1 to nylon parts of joint only. 3. Allow to dry for approximately one minute but before it is dry apply a coat of solution No.2 to nylon part. and allow the second coat to dry for three minutes until slightly tacky. 4. Apply a coat of solution No.3 to leather parts of jointing taking care that this does not mix with solution No.2. 5. Place joint correctly in press and leave under pressure for atleast eight hours and. if possible, for twelve hours. Leather Nylon Fabric types are cemented exactly the same way but in addition the 'lip' of the splice on the fabric top is sealed by cementing over a 25mm wide strip of woven fabric using a light film of solution No.3.
INSTRUCTIONS FOR JOINTING HIGRIP RUBBER SERIES
Preparation
1. Grind to given angle and length of joint as shown in the earlier diagrams. 2. Clean rubber and nylon parts of joint with MEK (Methyle ethyle ketone) to remove all loose particles of rubber. Allow MEK to evapo rate. Alternately this can be done using a sharp knife. 3. Make sure no rubber is left on nylon part of joint. 4. Apply a thin coat of solution No.6 to skived rubber area of both ends and allow to dry until slightly sticky. 5. Position both ends correctly in pre-heated press. 6. leave joint in press for a minimum of thirty minutes under heat and pressure. 7. Switch off power and allow the joints to cool under pressure for at least thirty minutes. Tension must not be applied before joint is completely cold. 8. Solution No.5 & 6 should not intermingle and at the same time hold the skived ends to gether since solution No.6 sticks immediately on contact.
LIST OF JOINTING EQUIPMENTS FOR HIGRIP BELTING
1. Finishing (Grinding) Machine. 2. Hot Press 3. Cold Press 4. Scraper. 5. Marking Plate. 6. Knife. 7. Carding Wire Brush. 8. Solutions. 9. Brushes.
DETERMINATION OF LENGHT
1 .Measure belt length around the pulleys, using a steel tape. If a tensioning pulley is present this should be at the minimum distance position. 2. If the drive has no means of belt length adjustment or only very limited adjustment, a tension allowance must be deducted from the length. Normal tension allowances are 1.5 to 3%, but in extreme cases, 3.5% is required. 3. Add joint length C to length obtained in 2, Please refer to the following Table for joint length.
JOINT LENGTH IN mm
Type of belt	Lenght of Leather	Length of Nylon	Total Length
KHA3	15mm	40mm	70mm + TA
KHA6	15mm	45mm	75mm + TA
KHA10	20mm	50mm	90mm + TA
KH2A6	20mm	60mm	100mm + TA
KH2A10	20mm	70mm	110mm + TA
KH3A10	20mm	90mm	130mm + TA
KH4A10	20mm	100mm	40mm + TA
KHCA3	15mm	55mm	70mm + TA
KHCA6	15mm	60mm	75mm + TA
KHCA10	20mm	70mm	95mm + TA
KHC2A6	20mm	80mm	100mm + TA
KHC2A10	20mm	90mm	110mm + TA
KHC3A10	20mm	10mm	130mm + TA
KHC4A10	20mm	120mm	140mm + TA


FNF-3	-	-	30mm
FNF-6	-	-	40mm
FNF-10	-	-	50mm
FNF-1	-	-	65mm
KH-2.KH-3,KH-4	-	-	75mm

4. Thickness allowance is obtained by multiplying thickness of the belt by 3.14 and is added to length obtained in 3.
5. Mark the corrected belt length on one edge of the belt and allow for 70 degree angle of joint. Cut off length of belt, the ends being cut to an angle of 70 degree.
Please follow the diagram

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