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Elevator 8 × 25Fi-FC
A company specializing in the production, research and development, and sales of steel wire ropes. It develops and produces supporting services for elevator rope manufacturers, focusing on 6 * 19 steel wire ropes. At the
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电梯专用 8×25Fi-FC 钢丝绳是针对低速、轻载经济型电梯（如老旧小区简易电梯、杂物电梯、小型货梯）曳引系统设计的低成本、易安装特种钢丝绳，符合 GB 8903-2018《电梯用钢丝绳》 标准，适配运行速度≤1.0m/s、提升高度≤50m 的电梯工况，尤其适合对采购成本敏感、运行需求简单的简易电梯场景。
一、型号含义拆解（电梯工况专属优化）
型号部分 含义说明 8 外层8 个工作股，采用对称平行排列设计，生产工艺简单、成本低廉，是传统低速电梯的经典股数结构；抗旋转性能满足轻载低速需求，旋转扭矩≤0.30 N・m/100m，可抑制电梯启停时的轻微绳体扭转，避免轿厢小幅偏摆。 ×25Fi K 型压实填充式瓦林吞股（Fi=Filled 填充结构），每股由 25 根粗细分级的钢丝分层排布，中心粗钢丝外环绕细钢丝并填充间隙；经电梯专用冷压实工艺处理后，股内钢丝为面接触，间隙≤0.012mm，抗弯曲疲劳性能比普通点接触股提升 40%，承载能力优于同直径的普通股钢丝绳，适配轻载电梯的频繁启停工况。 -FC 纤维绳芯（Fiber Core），芯部采用高韧性天然纤维或合成纤维（如聚丙烯、剑麻），具有良好的柔韧性与润滑脂储存能力，可减少股间摩擦、降低运行噪音；同时绳芯弹性好，能缓冲电梯启停的轻微冲击，且生产成本远低于钢芯（IWRC/CSC）和 PU 填充芯（PWRC）型号。 二、电梯专用核心技术参数
参数项 详细说明 结构组成 8 个压实填充式瓦林吞外层股 + 纤维绳芯；采用外层右捻 + 绳芯平行捻工艺，股间间隙≤0.025mm，绳体圆整度≥98.0%，与曳引轮槽贴合度达 96% 以上 钢丝材质 电梯专用优质高碳钢（#82B 标准级），抗拉强度波动≤35MPa，屈强比≥0.88，耐疲劳次数≥2.8×10⁶次（弯曲半径 D=10d），满足低速电梯高频次启停的疲劳寿命需求 表面处理 1. 热镀锌处理：镀层厚 25~40μm，盐雾试验≥500h 无红锈，适配老旧小区潮湿、通风差的机房环境2. 光面浸基础曳引脂：涂覆高粘附性矿物基曳引脂，摩擦系数稳定在 0.08~0.09，减少绳体与曳引轮的干磨损耗3. 电镀锌：仅适用于干燥无尘的杂物电梯、室内小型货梯 直径范围 常见 10~16mm（低速轻载电梯主流规格），适配曳引轮浅 U 型槽、梯形槽 公称抗拉强度 1670MPa（轻载电梯经济等级），兼顾强度与韧性，抵御低速电梯启停的冲击载荷，杜绝钢丝脆断 最小破断拉力系数 ≥0.37（满足 GB 8903-2018 强制要求），配套电梯安全系数≥12，满足 125% 超载工况的安全冗余需求 蠕变伸长率 ≤0.09%（额定载荷下运行 10⁴次），确保低速电梯平层精度≤±2.0mm 运行速度适配 最大适配电梯运行速度 1.0m/s，满足老旧小区简易电梯、杂物电梯的运输需求 三、典型性能表（1670MPa 热镀锌 + 基础曳引脂）
公称直径（mm） 参考重量（kg/100m） 最小破断拉力（kN） 适配电梯类型 10 42 35.0 杂物电梯、小型医用简易电梯（载重 0.5t） 12 58 48.0 老旧小区改造简易电梯（载重 0.8t） 16 105 85.0 室内小型货梯、商住两用杂物电梯（载重 1.2t） 四、低速轻载电梯工况核心特性
- 极致性价比，控制采购成本纤维绳芯（FC）省去钢芯压制和 PU 填充工序，生产成本比 IWRC 型号降低 25%~30%，比 PWRC 型号降低 35%~40%；8 股成熟结构进一步压缩生产与调试成本，是老旧小区电梯改造、小型货梯项目的经济型首选。
- 高柔韧性易安装，适配狭小空间纤维绳芯的弹性特质让绳体柔韧性远优于钢芯型号，在老旧小区狭窄的机房内布线时，可小半径弯折，无需专用折弯设备，缩短安装工期、降低施工难度。
- 储脂降噪，满足基础舒适需求纤维绳芯可储存大量曳引脂，持续润滑股间与绳轮接触面，减少摩擦噪音；电梯运行时噪音≤50dB（额定速度 0.6m/s），满足老旧小区居民的基础乘坐舒适需求。
- 维护简单，降低维保门槛无需专用润滑脂，定期补充普通矿物基曳引脂即可；绳体磨损可视化强，便于维保人员直观判断更换时机，适配老旧小区维保资源有限的场景。
五、电梯专用选型与维保要点
- 选型匹配要求
- 绳径与曳引轮直径比需满足 d/D ≤ 1/35（符合 GB 7588-2020 标准低速电梯要求），避免绳体过度弯曲导致疲劳断丝
- 槽型匹配：10~12mm 绳径适配浅 U 型槽，16mm 绳径适配梯形槽，提升曳引力，杜绝低速轻载运行打滑风险
- 严禁用通用 8×25Fi-FC 替代电梯专用型号，两者钢丝耐疲劳性能、绳芯适配性差异显著
- 维保关键事项
- 润滑管理：仅可使用电梯专用基础曳引脂，禁止使用机油等替代油品（易流失、腐蚀纤维绳芯）；脂层厚度保持 0.3~0.4mm，补脂周期建议为 6 个月 / 次
- 报废判定：出现以下情况立即更换（符合 GB 8903-2018）：① 单股断丝数≥3 根；② 绳径磨损≥5%；③ 钢丝绳出现锈蚀、变形、松股、绳芯外露
- 更换周期：建议每 4~5 年强制更换（或运行里程达 40 万 km），低速电梯换绳可手动操作，无需专业高空作业设备，降低更换成本
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common problem
Q
What kind of lubricant can prevent wire rope damage?
A
First, the smooth oil has good fluidity and soaking ability, allowing it to quickly enter the inside of the rope and the rope core when the wire rope is smooth pretreated, and can play a role in preventing bacteria from multiplying inside the rope core fibers.
Second, the lubricating oil adhered to the wire rope will not be easily wiped off, and the smoothing effect will not be affected within the specified temperature range. In addition, the lubricating oil with adhesive function can also prevent skid, which provides assistance for the friction of the elevator wire rope.
Third, it has a high oil film strength, which can resist the extremely high pressure between the steel wires in contact with each other under extremely heavy load, and can also resist decomposition and transformation.
Fourth, smooth oil has high cohesion, which can avoid the dripping of smooth oil, centrifugal loss when there is no exercise, and avoid grease waste and pollution to other equipment.
Fifth, it does not contain ingredients that can cause corrosion and rust in the steel wire rope, and the effect of anti-corrosion and anti-rust is better.
Sixth, its self-correcting ability is strong. When the wire rope is used, it constantly twists and turns, which will cause the surface oil film to continuously knead and expand. This requires a soft and high-temperature oil film to maintain the rope body from cracking.
Second, the lubricating oil adhered to the wire rope will not be easily wiped off, and the smoothing effect will not be affected within the specified temperature range. In addition, the lubricating oil with adhesive function can also prevent skid, which provides assistance for the friction of the elevator wire rope.
Third, it has a high oil film strength, which can resist the extremely high pressure between the steel wires in contact with each other under extremely heavy load, and can also resist decomposition and transformation.
Fourth, smooth oil has high cohesion, which can avoid the dripping of smooth oil, centrifugal loss when there is no exercise, and avoid grease waste and pollution to other equipment.
Fifth, it does not contain ingredients that can cause corrosion and rust in the steel wire rope, and the effect of anti-corrosion and anti-rust is better.
Sixth, its self-correcting ability is strong. When the wire rope is used, it constantly twists and turns, which will cause the surface oil film to continuously knead and expand. This requires a soft and high-temperature oil film to maintain the rope body from cracking.
Q
What are the classifications of wire ropes?
A
1, electric hoist wire rope: 6 * 37 + FC- 11/13/15/17.5
2, tower crane wire rope and multi-strand non-rotating wire rope: 6 * 19 + FC- 12/12.5, 6 * 37-13/14, 6 * 29FI + FC- 12/12.5, 4v39s + 5FC- 12/13/14, 35W * 7-12/13/14
3, car crane does not rotate wire rope: 4V39S + 5FC- 10/12/13/14/16/17, 35W * 7-10/12/13/14/15/16/17/18/20/22
4, pile driver flat wire rope: K6K36WS + IWR-/17.5/24/26/28/30/32/34/36/40/42/46
5, rotary excavator flat wire rope: 35W * K7- 24/26/28/30/32/36/40
6, dock crane wire rope: 6 * 36WS + IWR- 17.5/19 5/21.5/24/26
7, mine wire rope 6 * 19 + FC- 12.5/14/15.5/17/18.5/21 5/24.5/26/28, 6 * 19S + FC- 12.5/14/15.5/17/18.5/21 5/24.5
8, elevator wire rope: 8 * 19S + FC- 10/11/12/13/16
9. Hot-dip galvanized hanging basket wire rope: 4 * 31WS + PPC- 8.3/8
10. Hot-dip galvanized wire rope: 6 * 19/6 * 37/6 * 36WS/8 * 61/8 * 36WS/
11, galvanized wire rope: 6 * 7 + FC-/2/3/4
6 * 19 + FC-5/6/7 7/9.3/11, 6 * 12 + 7FC-5/6/7. 7/9.3/11, 7 * 19-5/6/8/10, 19 * 7-4/5/6/8/10, 6 * 37 + FC-8.7/9 3/11/13/15/17.5/19.5
12. Large diameter wire rope: above 60MM
13. Wire rope rigging (insertion, pressing, pouring, connectors, etc.):
14, coated wire rope: 2-3/3 - 4/4-5/5-6/6 - 8/8-12/12-15
15, binding wire rope: 6 * 12/6 * 15-13/14/15
The front represents the structure, and the back represents the diameter. For example: 6 * 37 + FC-11, the representative structure is 6 * 37 + FC, diameter: 11MM
2, tower crane wire rope and multi-strand non-rotating wire rope: 6 * 19 + FC- 12/12.5, 6 * 37-13/14, 6 * 29FI + FC- 12/12.5, 4v39s + 5FC- 12/13/14, 35W * 7-12/13/14
3, car crane does not rotate wire rope: 4V39S + 5FC- 10/12/13/14/16/17, 35W * 7-10/12/13/14/15/16/17/18/20/22
4, pile driver flat wire rope: K6K36WS + IWR-/17.5/24/26/28/30/32/34/36/40/42/46
5, rotary excavator flat wire rope: 35W * K7- 24/26/28/30/32/36/40
6, dock crane wire rope: 6 * 36WS + IWR- 17.5/19 5/21.5/24/26
7, mine wire rope 6 * 19 + FC- 12.5/14/15.5/17/18.5/21 5/24.5/26/28, 6 * 19S + FC- 12.5/14/15.5/17/18.5/21 5/24.5
8, elevator wire rope: 8 * 19S + FC- 10/11/12/13/16
9. Hot-dip galvanized hanging basket wire rope: 4 * 31WS + PPC- 8.3/8
10. Hot-dip galvanized wire rope: 6 * 19/6 * 37/6 * 36WS/8 * 61/8 * 36WS/
11, galvanized wire rope: 6 * 7 + FC-/2/3/4
6 * 19 + FC-5/6/7 7/9.3/11, 6 * 12 + 7FC-5/6/7. 7/9.3/11, 7 * 19-5/6/8/10, 19 * 7-4/5/6/8/10, 6 * 37 + FC-8.7/9 3/11/13/15/17.5/19.5
12. Large diameter wire rope: above 60MM
13. Wire rope rigging (insertion, pressing, pouring, connectors, etc.):
14, coated wire rope: 2-3/3 - 4/4-5/5-6/6 - 8/8-12/12-15
15, binding wire rope: 6 * 12/6 * 15-13/14/15
The front represents the structure, and the back represents the diameter. For example: 6 * 37 + FC-11, the representative structure is 6 * 37 + FC, diameter: 11MM
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