免费工程工具 #058
轴承压入配合力计算器
估算理想化的同材质实心轴与厚壁过盈配合环之间的轴向滑动力。这是基于 Lamé 模型的估算值，并非轴承制造商的安装力数值。
成果
界面压力（拉梅）
压入配合力
- μ — 经验证的实际接触界面滑动摩擦系数
- δ — 直径过盈量（轴 OD − 环孔径）
- d — 公称接触界面直径
- Dr — 配合厚壁环的实际外部材料边界，而非轴承整体 OD
- E — 此特例方程中轴和环共用的杨氏模量
热安装替代方案
ℹ️ 热计算结果仅为 ΔTmin = δ/(αd)，即恰好使孔径膨胀至等于过盈量的均匀温升。它提供零装配间隙，且忽略向轴的热损失。请增加经工程设计的间隙余量，并遵循部件制造商允许的加热方法和温度限制。
实例
k = 50/80 = 0.625
p = 210000 × 0.018 / (2 × 50) × (1 − 0.625²) = 23.03 MPa
F = 23.03 × π × 50 × 18 × 0.10 / 1000 = 6.51 kN (0.66 tf)
⚠️ 重要提示： 将轴承压入轴上时，只能对内圈施力。切勿通过滚动体传递力——否则会导致压痕损伤。
For the stated same-material solid-shaft/thick-ring elastic model, interface pressure comes from Lamé compliance and F = p × π × d × L × μ.
Dr must be the outer material boundary of the fitted ring itself, not the outside diameter of an assembled rolling bearing.
Use a value validated for the actual material pair, finish, lubricant, speed and pressure. Force is directly proportional to μ, so generic oiled/dry labels are insufficient for press sizing.
It is only δ/(αd): the uniform temperature rise that expands the bore by exactly the interference. It includes no assembly clearance or heat-loss allowance. Follow manufacturer limits.
No. Entry geometry, breakaway friction, misalignment, roughness, plasticity and edge effects are omitted. Apply an engineering process allowance backed by actual data.
Yes — apply mounting force only to the ring with the interference fit. Do not transmit mounting force through the rolling elements; use the bearing manufacturer’s mounting instructions.
本页所述的操作流程由 Vibromera 团队使用 Balanset-1A（一款用于现场转子平衡的便携式双通道动平衡仪及振动分析仪）开发并经过实地测试。
用于轴承状态监测的专业振动分析仪。已在50多个国家使用。
