Portal frame bearing 780708K
Portal frame bearing 780708K
Reinforced 780708K mast side roller bearing specially for 1-3 ton diesel and LPG lift trucks. Precision ground raceway reduces friction and abnormal shaking of forklift mast. Double-layer seal effectively isolates dust and scrap iron to extend service life. Standard size without modification, large inventory supports fast bulk delivery and big order discounts for overseas importers.
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Email: sales@qs-forklift.com
Product Description
Portal frame bearing 780708K
780708K forklift mast guide roller bearing is a critical side guide component for 1–3 ton diesel and LPG counterbalance forklifts. Manufactured from heat-treated GCr15 bearing steel with thickened outer ring and double composite seals, this upright roller delivers superior impact resistance and wear resistance. Precision machining ensures smooth mast sliding with low noise and no jitter. Standard OEM size enables direct replacement without modification. We offer sufficient stock and competitive wholesale pricing for forklift repair shops, equipment rental firms and global spare parts distributors.
Product Specifications
1. Product Overview
780708K mast roller bears lateral thrust load when the forklift lifts and stacks goods, guiding the smooth relative movement between inner and outer masts. The K-type reinforced structure optimizes internal rolling elements and wall thickness, solving common failures such as roller cracking, mast shaking, slow lifting and abnormal noise under frequent heavy-load operation. Widely applied as OEM and aftermarket replacement parts for 1–3 ton domestic fuel forklifts during routine maintenance and mast overhaul.
2. Technical Specifications
- Part Number: 780708K
- Material: GCr15 high carbon chromium bearing steel
- Craft: Integral quenching & tempering heat treatment + precision raceway grinding
- Seal Structure: Double-sided rubber dust & oil resistant seal
- Installation Position: Carriage side guide roller
- Applicable Equipment: 1 ton, 1.5 ton, 2 ton, 2.5 ton, 3 ton internal combustion forklifts
- Core Performance: High load capacity, anti-impact, low friction
3. Key Product Features
- Thickened outer ring structure: Effectively resists impact from heavy cargo, avoids ring cracking and deformation
- High-precision polished raceway: Low rotation resistance, quiet and stable mast lifting operation
- Double-layer isolation sealing: Blocks dust, iron scraps and hydraulic oil to reduce internal abrasion
- K-type reinforced upgrade: Higher bearing capacity than ordinary same-size mast rollers
- Standard unified dimension: Plug-and-play installation, no cutting or secondary processing required
- 100% full load testing before delivery to guarantee stable performance under continuous working
4. Compatibility
Suitable for mainstream domestic forklift brands including Hangcha, Heli, Lonking, Liugong and JAC 1–3 ton mast systems. Perfect replacement for worn, stuck and broken side guide rollers of forklift door frames.
5. Application & Market Advantages
This mast roller greatly reduces mast shaking and operating noise, lowers equipment failure rate and cuts long-term maintenance costs. It is an essential stocking spare part for forklift maintenance workshops, warehouse equipment leasing companies, cross-border spare parts importers and wholesale suppliers. Extra discounts are available for large bulk orders.
6. Packaging & Service
- Separate small box packaging + export standard carton outer package, anti-collision for sea and land transportation
- Constant large inventory supports fast delivery for urgent orders
- Custom OEM laser marking and personalized export packaging available
- Professional technical support for model matching confirmation
- One-stop supply of full series forklift mast accessories: side rollers, load rollers, chain rollers and pins
780708K forklift mast guide roller bearing is a critical side guide component for 1–3 ton diesel and LPG counterbalance forklifts. Manufactured from heat-treated GCr15 bearing steel with thickened outer ring and double composite seals, this upright roller delivers superior impact resistance and wear resistance. Precision machining ensures smooth mast sliding with low noise and no jitter. Standard OEM size enables direct replacement without modification. We offer sufficient stock and competitive wholesale pricing for forklift repair shops, equipment rental firms and global spare parts distributors.
1. Product Overview
780708K mast roller bears lateral thrust load when the forklift lifts and stacks goods, guiding the smooth relative movement between inner and outer masts. The K-type reinforced structure optimizes internal rolling elements and wall thickness, solving common failures such as roller cracking, mast shaking, slow lifting and abnormal noise under frequent heavy-load operation. Widely applied as OEM and aftermarket replacement parts for 1–3 ton domestic fuel forklifts during routine maintenance and mast overhaul.
2. Technical Specifications
- Part Number: 780708K
- Material: GCr15 high carbon chromium bearing steel
- Craft: Integral quenching & tempering heat treatment + precision raceway grinding
- Seal Structure: Double-sided rubber dust & oil resistant seal
- Installation Position: Carriage side guide roller
- Applicable Equipment: 1 ton, 1.5 ton, 2 ton, 2.5 ton, 3 ton internal combustion forklifts
- Core Performance: High load capacity, anti-impact, low friction
3. Key Product Features
- Thickened outer ring structure: Effectively resists impact from heavy cargo, avoids ring cracking and deformation
- High-precision polished raceway: Low rotation resistance, quiet and stable mast lifting operation
- Double-layer isolation sealing: Blocks dust, iron scraps and hydraulic oil to reduce internal abrasion
- K-type reinforced upgrade: Higher bearing capacity than ordinary same-size mast rollers
- Standard unified dimension: Plug-and-play installation, no cutting or secondary processing required
- 100% full load testing before delivery to guarantee stable performance under continuous working
4. Compatibility
Suitable for mainstream domestic forklift brands including Hangcha, Heli, Lonking, Liugong and JAC 1–3 ton mast systems. Perfect replacement for worn, stuck and broken side guide rollers of forklift door frames.
5. Application & Market Advantages
This mast roller greatly reduces mast shaking and operating noise, lowers equipment failure rate and cuts long-term maintenance costs. It is an essential stocking spare part for forklift maintenance workshops, warehouse equipment leasing companies, cross-border spare parts importers and wholesale suppliers. Extra discounts are available for large bulk orders.
6. Packaging & Service
- Separate small box packaging + export standard carton outer package, anti-collision for sea and land transportation
- Constant large inventory supports fast delivery for urgent orders
- Custom OEM laser marking and personalized export packaging available
- Professional technical support for model matching confirmation
- One-stop supply of full series forklift mast accessories: side rollers, load rollers, chain rollers and pins
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