HZ-55 Spindle Bolster RTR
Extra heavy duty spindle for ring doublers in RTR configuration — HZ-55, HZ-66, HZ-68, HZ-77 and neck-bearing spindles.

Extra heavy duty spindle for ring doublers, supplied in RTR configuration for jute, tire cord, nylon rope/twine, fishnet, polyester, draw twisting and HDPE yarn duties. Complete set with flange, nut and spindle lock. Confirm yarn process, operating weight, spindle speed and brake requirement before selection.
Suitable machines
Process types
- Jute Industries
- Tire Cord Yarn Industries
- Nylon Rope / Twine Industries
- Fishnet Industries
- Polyester
- Draw Twisting
- HDPE Industries
Product description
- Spindle blade: EN-31 / AISI-52100 bearing steel
- Wharve diameter up to 100 mm
- Supplied as a complete set with flange, nut and spindle lock
- Made for ring diameter 5 in to 12 in
- Insert selection is confirmed against the ordered spindle assembly
- Models
- HZ-55, HZ-66, HZ-68, HZ-77; 20 / 24 / 28 mm neck bearing spindle
- Configuration
- RTR — extra heavy duty ring doubler
- Machine compatibility
- Aawadhkrupa, LNI, JMW, Huzur Makina, Allma, Minarva, Birko AS, Giesse, Milhan Makina
- Process types
- Jute, tire cord, nylon rope/twine, fishnet, polyester, draw twisting, HDPE
- Speed
- 3,000–7,000 rpm
- Lift
- Up to 480 mm
- Wharve diameter
- Up to 100 mm
- Ring diameter
- 5–12 inch
- Materials
- EN-31 / AISI-52100 bearing-steel blade
- Vibration
- Reduced to 0.07 mm/sec
- Noise level
- Confirm noise level and test conditions with quotation
Application
- Vibration reduced up to 0.07 mm/sec
- Lift up to 480 mm
- Noise level: confirm the requirement and measurement conditions with the quotation
- Long working life
- Standard bearing material with specified hardness
- Reduced weight of spindle top part (new design)
- Short delivery time
Advantages
- Noise and power depend on the selected assembly and operating conditions
- Speed 3,000–7,000 rpm
- Insert selected against spindle speed, operating weight and yarn quality
- Can be supplied with any kind of brake system
- Dynamically balanced
- Multi-stage quality checks
Specifications
The HZ-55 RTR is the extra-heavy-duty spindle for ring doublers in RTR configuration — covering HZ-55, HZ-66, HZ-68, HZ-77 and neck-bearing variants for the heaviest doubling duties. Rated 3,000–7,000 rpm, it is built for positions where package weight and twist loads punish standard bolsters. Vindex Industries manufactures this spindle bolster since 1985 at Surendranagar, Gujarat, exporting it to spinning and twisting mills in 87 countries in bulk order quantities.
Each variant is made for its listed machine model; the team confirms the match before quoting. View the product specifications on this page, then send an enquiry with your doubler make and model for a confirmed match.
Mills running RTR doublers on coarse or plied yarns typically stock these bolsters as planned wear parts — the cost of a scheduled change is small next to a vibration-damaged batch.
Export markets
Vindex Industries manufactures this product in Surendranagar, Gujarat, and exports textile machinery spares to 87 countries — including Bangladesh, Vietnam, Turkey, Indonesia, Pakistan, Egypt, Uzbekistan, Brazil, Mexico and Thailand. Request an export quote.